* [PATCH] x86: more debug print out with mtrr
@ 2009-03-12 3:05 Yinghai Lu
2009-03-12 3:05 ` [PATCH] x86: print out mtrr_range_state when user specify size Yinghai Lu
2009-03-13 1:40 ` [PATCH] x86: more debug print out with mtrr Ingo Molnar
0 siblings, 2 replies; 19+ messages in thread
From: Yinghai Lu @ 2009-03-12 3:05 UTC (permalink / raw)
To: Ingo Molnar, Thomas Gleixner, H. Peter Anvin; +Cc: linux-kernel@vger.kernel.org
Impact: more print out
remove unneeded mtrr_show
it will only printout one time by first cpu, so it is not big deal.
also print out directly from get_mtrr, because it doesn't update mtrr_state.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
arch/x86/kernel/cpu/mtrr/generic.c | 93
+++++++++++++++++++------------------
1 file changed, 50 insertions(+), 43 deletions(-)
Index: linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/generic.c
+++ linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c
@@ -33,14 +33,6 @@ u64 mtrr_tom2;
struct mtrr_state_type mtrr_state = {};
EXPORT_SYMBOL_GPL(mtrr_state);
-static int __initdata mtrr_show;
-static int __init mtrr_debug(char *opt)
-{
- mtrr_show = 1;
- return 0;
-}
-early_param("mtrr.show", mtrr_debug);
-
/*
* Returns the effective MTRR type for the region
* Error returns:
@@ -193,13 +185,51 @@ static void print_fixed(unsigned base, u
unsigned i;
for (i = 0; i < 8; ++i, ++types, base += step)
- printk(KERN_INFO "MTRR %05X-%05X %s\n",
+ printk(KERN_INFO " %05X-%05X %s\n",
base, base + step - 1, mtrr_attrib_to_str(*types));
}
static void prepare_set(void);
static void post_set(void);
+static void __init print_mtrr_state(void)
+{
+ unsigned int i;
+ int high_width;
+
+ printk(KERN_INFO "MTRR default type: %s\n",
mtrr_attrib_to_str(mtrr_state.def_type));
+ if (mtrr_state.have_fixed) {
+ printk(KERN_INFO "MTRR fixed ranges %sabled:\n",
+ mtrr_state.enabled & 1 ? "en" : "dis");
+ print_fixed(0x00000, 0x10000, mtrr_state.fixed_ranges + 0);
+ for (i = 0; i < 2; ++i)
+ print_fixed(0x80000 + i * 0x20000, 0x04000,
mtrr_state.fixed_ranges + (i + 1) * 8);
+ for (i = 0; i < 8; ++i)
+ print_fixed(0xC0000 + i * 0x08000, 0x01000,
mtrr_state.fixed_ranges + (i + 3) * 8);
+ }
+ printk(KERN_INFO "MTRR variable ranges %sabled:\n",
+ mtrr_state.enabled & 2 ? "en" : "dis");
+ high_width = ((size_or_mask ? ffs(size_or_mask) - 1 : 32) - (32 -
PAGE_SHIFT) + 3) / 4;
+ for (i = 0; i < num_var_ranges; ++i) {
+ if (mtrr_state.var_ranges[i].mask_lo & (1 << 11))
+ printk(KERN_INFO " %u base %0*X%05X000 mask %0*X%05X000 %s\n",
+ i,
+ high_width,
+ mtrr_state.var_ranges[i].base_hi,
+ mtrr_state.var_ranges[i].base_lo >> 12,
+ high_width,
+ mtrr_state.var_ranges[i].mask_hi,
+ mtrr_state.var_ranges[i].mask_lo >> 12,
+ mtrr_attrib_to_str(mtrr_state.var_ranges[i].base_lo
& 0xff));
+ else
+ printk(KERN_INFO " %u disabled\n", i);
+ }
+ if (mtrr_tom2) {
+ printk(KERN_INFO "TOM2: %016llx aka %lldM\n",
+ mtrr_tom2, mtrr_tom2>>20);
+ }
+}
+
/* Grab all of the MTRR state for this CPU into *state */
void __init get_mtrr_state(void)
{
@@ -231,41 +261,9 @@ void __init get_mtrr_state(void)
mtrr_tom2 |= low;
mtrr_tom2 &= 0xffffff800000ULL;
}
- if (mtrr_show) {
- int high_width;
- printk(KERN_INFO "MTRR default type: %s\n",
mtrr_attrib_to_str(mtrr_state.def_type));
- if (mtrr_state.have_fixed) {
- printk(KERN_INFO "MTRR fixed ranges %sabled:\n",
- mtrr_state.enabled & 1 ? "en" : "dis");
- print_fixed(0x00000, 0x10000, mtrr_state.fixed_ranges + 0);
- for (i = 0; i < 2; ++i)
- print_fixed(0x80000 + i * 0x20000, 0x04000,
mtrr_state.fixed_ranges + (i + 1) * 8);
- for (i = 0; i < 8; ++i)
- print_fixed(0xC0000 + i * 0x08000, 0x01000,
mtrr_state.fixed_ranges + (i + 3) * 8);
- }
- printk(KERN_INFO "MTRR variable ranges %sabled:\n",
- mtrr_state.enabled & 2 ? "en" : "dis");
- high_width = ((size_or_mask ? ffs(size_or_mask) - 1 : 32) - (32
- PAGE_SHIFT) + 3) / 4;
- for (i = 0; i < num_var_ranges; ++i) {
- if (mtrr_state.var_ranges[i].mask_lo & (1 << 11))
- printk(KERN_INFO "MTRR %u base %0*X%05X000 mask
%0*X%05X000 %s\n",
- i,
- high_width,
- mtrr_state.var_ranges[i].base_hi,
- mtrr_state.var_ranges[i].base_lo >> 12,
- high_width,
- mtrr_state.var_ranges[i].mask_hi,
- mtrr_state.var_ranges[i].mask_lo >> 12,
-
mtrr_attrib_to_str(mtrr_state.var_ranges[i].base_lo & 0xff));
- else
- printk(KERN_INFO "MTRR %u disabled\n", i);
- }
- if (mtrr_tom2) {
- printk(KERN_INFO "TOM2: %016llx aka %lldM\n",
- mtrr_tom2, mtrr_tom2>>20);
- }
- }
+ print_mtrr_state();
+
mtrr_state_set = 1;
/* PAT setup for BP. We need to go through sync steps here */
@@ -377,7 +375,12 @@ static void generic_get_mtrr(unsigned in
unsigned int mask_lo, mask_hi, base_lo, base_hi;
unsigned int tmp, hi;
+ /*
+ * get_mtrr doesn't need to update mtrr_state, also it could be called
+ * from any cpu, so try to print it out directly.
+ */
rdmsr(MTRRphysMask_MSR(reg), mask_lo, mask_hi);
+
if ((mask_lo & 0x800) == 0) {
/* Invalid (i.e. free) range */
*base = 0;
@@ -407,6 +410,10 @@ static void generic_get_mtrr(unsigned in
*size = -mask_lo;
*base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT;
*type = base_lo & 0xff;
+
+ printk(KERN_DEBUG " get_mtrr: cpu%d reg%02d base=%010lx
size=%010lx %s\n",
+ smp_processor_id(), reg, *base, *size,
+ mtrr_attrib_to_str(*type & 0xff));
}
/**
^ permalink raw reply [flat|nested] 19+ messages in thread* [PATCH] x86: print out mtrr_range_state when user specify size 2009-03-12 3:05 [PATCH] x86: more debug print out with mtrr Yinghai Lu @ 2009-03-12 3:05 ` Yinghai Lu 2009-03-12 3:07 ` [PATCH] x86: seperate mtrr cleanup/mtrr_e820 trim to seperated file Yinghai Lu 2009-03-13 2:34 ` [tip:x86/mtrr] x86: print out mtrr_range_state when user specify size Yinghai Lu 2009-03-13 1:40 ` [PATCH] x86: more debug print out with mtrr Ingo Molnar 1 sibling, 2 replies; 19+ messages in thread From: Yinghai Lu @ 2009-03-12 3:05 UTC (permalink / raw) To: Ingo Molnar, Thomas Gleixner, H. Peter Anvin; +Cc: linux-kernel@vger.kernel.org Impact: print more info so keep it consistent with autodetect version Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- arch/x86/kernel/cpu/mtrr/main.c | 2 ++ 1 file changed, 2 insertions(+) Index: linux-2.6/arch/x86/kernel/cpu/mtrr/main.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/main.c +++ linux-2.6/arch/x86/kernel/cpu/mtrr/main.c @@ -1424,6 +1424,8 @@ static int __init mtrr_cleanup(unsigned if (!result[i].bad) { set_var_mtrr_all(address_bits); + printk(KERN_DEBUG "New variable MTRRs\n"); + print_out_mtrr_range_state(); return 1; } printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, " ^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH] x86: seperate mtrr cleanup/mtrr_e820 trim to seperated file 2009-03-12 3:05 ` [PATCH] x86: print out mtrr_range_state when user specify size Yinghai Lu @ 2009-03-12 3:07 ` Yinghai Lu 2009-03-13 2:34 ` [tip:x86/mtrr] x86: separate mtrr cleanup/mtrr_e820 trim to separate file Yinghai Lu 2009-03-13 2:34 ` [tip:x86/mtrr] x86: print out mtrr_range_state when user specify size Yinghai Lu 1 sibling, 1 reply; 19+ messages in thread From: Yinghai Lu @ 2009-03-12 3:07 UTC (permalink / raw) To: Ingo Molnar, Thomas Gleixner, H. Peter Anvin; +Cc: linux-kernel@vger.kernel.org Impact: cleanup mtrr main.c is too big, try to seperate mtrr cleanup and mtrr e820 trim code to another files Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- arch/x86/kernel/cpu/mtrr/Makefile | 2 arch/x86/kernel/cpu/mtrr/cleanup.c | 1089 +++++++++++++++++++++++++++++++++++++ arch/x86/kernel/cpu/mtrr/main.c | 1055 ----------------------------------- arch/x86/kernel/cpu/mtrr/mtrr.h | 3 4 files changed, 1094 insertions(+), 1055 deletions(-) Index: linux-2.6/arch/x86/kernel/cpu/mtrr/main.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/main.c +++ linux-2.6/arch/x86/kernel/cpu/mtrr/main.c @@ -610,1060 +610,7 @@ static struct sysdev_driver mtrr_sysdev_ .resume = mtrr_restore, }; -/* should be related to MTRR_VAR_RANGES nums */ -#define RANGE_NUM 256 - -struct res_range { - unsigned long start; - unsigned long end; -}; - -static int __init -add_range(struct res_range *range, int nr_range, unsigned long start, - unsigned long end) -{ - /* out of slots */ - if (nr_range >= RANGE_NUM) - return nr_range; - - range[nr_range].start = start; - range[nr_range].end = end; - - nr_range++; - - return nr_range; -} - -static int __init -add_range_with_merge(struct res_range *range, int nr_range, unsigned long start, - unsigned long end) -{ - int i; - - /* try to merge it with old one */ - for (i = 0; i < nr_range; i++) { - unsigned long final_start, final_end; - unsigned long common_start, common_end; - - if (!range[i].end) - continue; - - common_start = max(range[i].start, start); - common_end = min(range[i].end, end); - if (common_start > common_end + 1) - continue; - - final_start = min(range[i].start, start); - final_end = max(range[i].end, end); - - range[i].start = final_start; - range[i].end = final_end; - return nr_range; - } - - /* need to add that */ - return add_range(range, nr_range, start, end); -} - -static void __init -subtract_range(struct res_range *range, unsigned long start, unsigned long end) -{ - int i, j; - - for (j = 0; j < RANGE_NUM; j++) { - if (!range[j].end) - continue; - - if (start <= range[j].start && end >= range[j].end) { - range[j].start = 0; - range[j].end = 0; - continue; - } - - if (start <= range[j].start && end < range[j].end && - range[j].start < end + 1) { - range[j].start = end + 1; - continue; - } - - - if (start > range[j].start && end >= range[j].end && - range[j].end > start - 1) { - range[j].end = start - 1; - continue; - } - - if (start > range[j].start && end < range[j].end) { - /* find the new spare */ - for (i = 0; i < RANGE_NUM; i++) { - if (range[i].end == 0) - break; - } - if (i < RANGE_NUM) { - range[i].end = range[j].end; - range[i].start = end + 1; - } else { - printk(KERN_ERR "run of slot in ranges\n"); - } - range[j].end = start - 1; - continue; - } - } -} - -static int __init cmp_range(const void *x1, const void *x2) -{ - const struct res_range *r1 = x1; - const struct res_range *r2 = x2; - long start1, start2; - - start1 = r1->start; - start2 = r2->start; - - return start1 - start2; -} - -struct var_mtrr_range_state { - unsigned long base_pfn; - unsigned long size_pfn; - mtrr_type type; -}; - -static struct var_mtrr_range_state __initdata range_state[RANGE_NUM]; -static int __initdata debug_print; - -static int __init -x86_get_mtrr_mem_range(struct res_range *range, int nr_range, - unsigned long extra_remove_base, - unsigned long extra_remove_size) -{ - unsigned long i, base, size; - mtrr_type type; - - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type != MTRR_TYPE_WRBACK) - continue; - base = range_state[i].base_pfn; - size = range_state[i].size_pfn; - nr_range = add_range_with_merge(range, nr_range, base, - base + size - 1); - } - if (debug_print) { - printk(KERN_DEBUG "After WB checking\n"); - for (i = 0; i < nr_range; i++) - printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", - range[i].start, range[i].end + 1); - } - - /* take out UC ranges */ - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type != MTRR_TYPE_UNCACHABLE && - type != MTRR_TYPE_WRPROT) - continue; - size = range_state[i].size_pfn; - if (!size) - continue; - base = range_state[i].base_pfn; - subtract_range(range, base, base + size - 1); - } - if (extra_remove_size) - subtract_range(range, extra_remove_base, - extra_remove_base + extra_remove_size - 1); - - /* get new range num */ - nr_range = 0; - for (i = 0; i < RANGE_NUM; i++) { - if (!range[i].end) - continue; - nr_range++; - } - if (debug_print) { - printk(KERN_DEBUG "After UC checking\n"); - for (i = 0; i < nr_range; i++) - printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", - range[i].start, range[i].end + 1); - } - - /* sort the ranges */ - sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); - if (debug_print) { - printk(KERN_DEBUG "After sorting\n"); - for (i = 0; i < nr_range; i++) - printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", - range[i].start, range[i].end + 1); - } - - /* clear those is not used */ - for (i = nr_range; i < RANGE_NUM; i++) - memset(&range[i], 0, sizeof(range[i])); - - return nr_range; -} - -static struct res_range __initdata range[RANGE_NUM]; -static int __initdata nr_range; - -#ifdef CONFIG_MTRR_SANITIZER - -static unsigned long __init sum_ranges(struct res_range *range, int nr_range) -{ - unsigned long sum; - int i; - - sum = 0; - for (i = 0; i < nr_range; i++) - sum += range[i].end + 1 - range[i].start; - - return sum; -} - -static int enable_mtrr_cleanup __initdata = - CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT; - -static int __init disable_mtrr_cleanup_setup(char *str) -{ - enable_mtrr_cleanup = 0; - return 0; -} -early_param("disable_mtrr_cleanup", disable_mtrr_cleanup_setup); - -static int __init enable_mtrr_cleanup_setup(char *str) -{ - enable_mtrr_cleanup = 1; - return 0; -} -early_param("enable_mtrr_cleanup", enable_mtrr_cleanup_setup); - -static int __init mtrr_cleanup_debug_setup(char *str) -{ - debug_print = 1; - return 0; -} -early_param("mtrr_cleanup_debug", mtrr_cleanup_debug_setup); - -struct var_mtrr_state { - unsigned long range_startk; - unsigned long range_sizek; - unsigned long chunk_sizek; - unsigned long gran_sizek; - unsigned int reg; -}; - -static void __init -set_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, - unsigned char type, unsigned int address_bits) -{ - u32 base_lo, base_hi, mask_lo, mask_hi; - u64 base, mask; - - if (!sizek) { - fill_mtrr_var_range(reg, 0, 0, 0, 0); - return; - } - - mask = (1ULL << address_bits) - 1; - mask &= ~((((u64)sizek) << 10) - 1); - - base = ((u64)basek) << 10; - - base |= type; - mask |= 0x800; - - base_lo = base & ((1ULL<<32) - 1); - base_hi = base >> 32; - - mask_lo = mask & ((1ULL<<32) - 1); - mask_hi = mask >> 32; - - fill_mtrr_var_range(reg, base_lo, base_hi, mask_lo, mask_hi); -} - -static void __init -save_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, - unsigned char type) -{ - range_state[reg].base_pfn = basek >> (PAGE_SHIFT - 10); - range_state[reg].size_pfn = sizek >> (PAGE_SHIFT - 10); - range_state[reg].type = type; -} - -static void __init -set_var_mtrr_all(unsigned int address_bits) -{ - unsigned long basek, sizek; - unsigned char type; - unsigned int reg; - - for (reg = 0; reg < num_var_ranges; reg++) { - basek = range_state[reg].base_pfn << (PAGE_SHIFT - 10); - sizek = range_state[reg].size_pfn << (PAGE_SHIFT - 10); - type = range_state[reg].type; - - set_var_mtrr(reg, basek, sizek, type, address_bits); - } -} - -static unsigned long to_size_factor(unsigned long sizek, char *factorp) -{ - char factor; - unsigned long base = sizek; - - if (base & ((1<<10) - 1)) { - /* not MB alignment */ - factor = 'K'; - } else if (base & ((1<<20) - 1)){ - factor = 'M'; - base >>= 10; - } else { - factor = 'G'; - base >>= 20; - } - - *factorp = factor; - - return base; -} - -static unsigned int __init -range_to_mtrr(unsigned int reg, unsigned long range_startk, - unsigned long range_sizek, unsigned char type) -{ - if (!range_sizek || (reg >= num_var_ranges)) - return reg; - - while (range_sizek) { - unsigned long max_align, align; - unsigned long sizek; - - /* Compute the maximum size I can make a range */ - if (range_startk) - max_align = ffs(range_startk) - 1; - else - max_align = 32; - align = fls(range_sizek) - 1; - if (align > max_align) - align = max_align; - - sizek = 1 << align; - if (debug_print) { - char start_factor = 'K', size_factor = 'K'; - unsigned long start_base, size_base; - - start_base = to_size_factor(range_startk, &start_factor), - size_base = to_size_factor(sizek, &size_factor), - - printk(KERN_DEBUG "Setting variable MTRR %d, " - "base: %ld%cB, range: %ld%cB, type %s\n", - reg, start_base, start_factor, - size_base, size_factor, - (type == MTRR_TYPE_UNCACHABLE)?"UC": - ((type == MTRR_TYPE_WRBACK)?"WB":"Other") - ); - } - save_var_mtrr(reg++, range_startk, sizek, type); - range_startk += sizek; - range_sizek -= sizek; - if (reg >= num_var_ranges) - break; - } - return reg; -} - -static unsigned __init -range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek, - unsigned long sizek) -{ - unsigned long hole_basek, hole_sizek; - unsigned long second_basek, second_sizek; - unsigned long range0_basek, range0_sizek; - unsigned long range_basek, range_sizek; - unsigned long chunk_sizek; - unsigned long gran_sizek; - - hole_basek = 0; - hole_sizek = 0; - second_basek = 0; - second_sizek = 0; - chunk_sizek = state->chunk_sizek; - gran_sizek = state->gran_sizek; - - /* align with gran size, prevent small block used up MTRRs */ - range_basek = ALIGN(state->range_startk, gran_sizek); - if ((range_basek > basek) && basek) - return second_sizek; - state->range_sizek -= (range_basek - state->range_startk); - range_sizek = ALIGN(state->range_sizek, gran_sizek); - - while (range_sizek > state->range_sizek) { - range_sizek -= gran_sizek; - if (!range_sizek) - return 0; - } - state->range_sizek = range_sizek; - - /* try to append some small hole */ - range0_basek = state->range_startk; - range0_sizek = ALIGN(state->range_sizek, chunk_sizek); - - /* no increase */ - if (range0_sizek == state->range_sizek) { - if (debug_print) - printk(KERN_DEBUG "rangeX: %016lx - %016lx\n", - range0_basek<<10, - (range0_basek + state->range_sizek)<<10); - state->reg = range_to_mtrr(state->reg, range0_basek, - state->range_sizek, MTRR_TYPE_WRBACK); - return 0; - } - - /* only cut back, when it is not the last */ - if (sizek) { - while (range0_basek + range0_sizek > (basek + sizek)) { - if (range0_sizek >= chunk_sizek) - range0_sizek -= chunk_sizek; - else - range0_sizek = 0; - - if (!range0_sizek) - break; - } - } - -second_try: - range_basek = range0_basek + range0_sizek; - - /* one hole in the middle */ - if (range_basek > basek && range_basek <= (basek + sizek)) - second_sizek = range_basek - basek; - - if (range0_sizek > state->range_sizek) { - - /* one hole in middle or at end */ - hole_sizek = range0_sizek - state->range_sizek - second_sizek; - - /* hole size should be less than half of range0 size */ - if (hole_sizek >= (range0_sizek >> 1) && - range0_sizek >= chunk_sizek) { - range0_sizek -= chunk_sizek; - second_sizek = 0; - hole_sizek = 0; - - goto second_try; - } - } - - if (range0_sizek) { - if (debug_print) - printk(KERN_DEBUG "range0: %016lx - %016lx\n", - range0_basek<<10, - (range0_basek + range0_sizek)<<10); - state->reg = range_to_mtrr(state->reg, range0_basek, - range0_sizek, MTRR_TYPE_WRBACK); - } - - if (range0_sizek < state->range_sizek) { - /* need to handle left over */ - range_sizek = state->range_sizek - range0_sizek; - - if (debug_print) - printk(KERN_DEBUG "range: %016lx - %016lx\n", - range_basek<<10, - (range_basek + range_sizek)<<10); - state->reg = range_to_mtrr(state->reg, range_basek, - range_sizek, MTRR_TYPE_WRBACK); - } - - if (hole_sizek) { - hole_basek = range_basek - hole_sizek - second_sizek; - if (debug_print) - printk(KERN_DEBUG "hole: %016lx - %016lx\n", - hole_basek<<10, - (hole_basek + hole_sizek)<<10); - state->reg = range_to_mtrr(state->reg, hole_basek, - hole_sizek, MTRR_TYPE_UNCACHABLE); - } - - return second_sizek; -} - -static void __init -set_var_mtrr_range(struct var_mtrr_state *state, unsigned long base_pfn, - unsigned long size_pfn) -{ - unsigned long basek, sizek; - unsigned long second_sizek = 0; - - if (state->reg >= num_var_ranges) - return; - - basek = base_pfn << (PAGE_SHIFT - 10); - sizek = size_pfn << (PAGE_SHIFT - 10); - - /* See if I can merge with the last range */ - if ((basek <= 1024) || - (state->range_startk + state->range_sizek == basek)) { - unsigned long endk = basek + sizek; - state->range_sizek = endk - state->range_startk; - return; - } - /* Write the range mtrrs */ - if (state->range_sizek != 0) - second_sizek = range_to_mtrr_with_hole(state, basek, sizek); - - /* Allocate an msr */ - state->range_startk = basek + second_sizek; - state->range_sizek = sizek - second_sizek; -} - -/* mininum size of mtrr block that can take hole */ -static u64 mtrr_chunk_size __initdata = (256ULL<<20); - -static int __init parse_mtrr_chunk_size_opt(char *p) -{ - if (!p) - return -EINVAL; - mtrr_chunk_size = memparse(p, &p); - return 0; -} -early_param("mtrr_chunk_size", parse_mtrr_chunk_size_opt); - -/* granity of mtrr of block */ -static u64 mtrr_gran_size __initdata; - -static int __init parse_mtrr_gran_size_opt(char *p) -{ - if (!p) - return -EINVAL; - mtrr_gran_size = memparse(p, &p); - return 0; -} -early_param("mtrr_gran_size", parse_mtrr_gran_size_opt); - -static int nr_mtrr_spare_reg __initdata = - CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT; - -static int __init parse_mtrr_spare_reg(char *arg) -{ - if (arg) - nr_mtrr_spare_reg = simple_strtoul(arg, NULL, 0); - return 0; -} - -early_param("mtrr_spare_reg_nr", parse_mtrr_spare_reg); - -static int __init -x86_setup_var_mtrrs(struct res_range *range, int nr_range, - u64 chunk_size, u64 gran_size) -{ - struct var_mtrr_state var_state; - int i; - int num_reg; - - var_state.range_startk = 0; - var_state.range_sizek = 0; - var_state.reg = 0; - var_state.chunk_sizek = chunk_size >> 10; - var_state.gran_sizek = gran_size >> 10; - - memset(range_state, 0, sizeof(range_state)); - - /* Write the range etc */ - for (i = 0; i < nr_range; i++) - set_var_mtrr_range(&var_state, range[i].start, - range[i].end - range[i].start + 1); - - /* Write the last range */ - if (var_state.range_sizek != 0) - range_to_mtrr_with_hole(&var_state, 0, 0); - - num_reg = var_state.reg; - /* Clear out the extra MTRR's */ - while (var_state.reg < num_var_ranges) { - save_var_mtrr(var_state.reg, 0, 0, 0); - var_state.reg++; - } - - return num_reg; -} - -struct mtrr_cleanup_result { - unsigned long gran_sizek; - unsigned long chunk_sizek; - unsigned long lose_cover_sizek; - unsigned int num_reg; - int bad; -}; - -/* - * gran_size: 64K, 128K, 256K, 512K, 1M, 2M, ..., 2G - * chunk size: gran_size, ..., 2G - * so we need (1+16)*8 - */ -#define NUM_RESULT 136 -#define PSHIFT (PAGE_SHIFT - 10) - -static struct mtrr_cleanup_result __initdata result[NUM_RESULT]; -static unsigned long __initdata min_loss_pfn[RANGE_NUM]; - -static void __init print_out_mtrr_range_state(void) -{ - int i; - char start_factor = 'K', size_factor = 'K'; - unsigned long start_base, size_base; - mtrr_type type; - - for (i = 0; i < num_var_ranges; i++) { - - size_base = range_state[i].size_pfn << (PAGE_SHIFT - 10); - if (!size_base) - continue; - - size_base = to_size_factor(size_base, &size_factor), - start_base = range_state[i].base_pfn << (PAGE_SHIFT - 10); - start_base = to_size_factor(start_base, &start_factor), - type = range_state[i].type; - - printk(KERN_DEBUG "reg %d, base: %ld%cB, range: %ld%cB, type %s\n", - i, start_base, start_factor, - size_base, size_factor, - (type == MTRR_TYPE_UNCACHABLE) ? "UC" : - ((type == MTRR_TYPE_WRPROT) ? "WP" : - ((type == MTRR_TYPE_WRBACK) ? "WB" : "Other")) - ); - } -} - -static int __init mtrr_need_cleanup(void) -{ - int i; - mtrr_type type; - unsigned long size; - /* extra one for all 0 */ - int num[MTRR_NUM_TYPES + 1]; - - /* check entries number */ - memset(num, 0, sizeof(num)); - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - size = range_state[i].size_pfn; - if (type >= MTRR_NUM_TYPES) - continue; - if (!size) - type = MTRR_NUM_TYPES; - if (type == MTRR_TYPE_WRPROT) - type = MTRR_TYPE_UNCACHABLE; - num[type]++; - } - - /* check if we got UC entries */ - if (!num[MTRR_TYPE_UNCACHABLE]) - return 0; - - /* check if we only had WB and UC */ - if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != - num_var_ranges - num[MTRR_NUM_TYPES]) - return 0; - - return 1; -} - -static unsigned long __initdata range_sums; -static void __init mtrr_calc_range_state(u64 chunk_size, u64 gran_size, - unsigned long extra_remove_base, - unsigned long extra_remove_size, - int i) -{ - int num_reg; - static struct res_range range_new[RANGE_NUM]; - static int nr_range_new; - unsigned long range_sums_new; - - /* convert ranges to var ranges state */ - num_reg = x86_setup_var_mtrrs(range, nr_range, - chunk_size, gran_size); - - /* we got new setting in range_state, check it */ - memset(range_new, 0, sizeof(range_new)); - nr_range_new = x86_get_mtrr_mem_range(range_new, 0, - extra_remove_base, extra_remove_size); - range_sums_new = sum_ranges(range_new, nr_range_new); - - result[i].chunk_sizek = chunk_size >> 10; - result[i].gran_sizek = gran_size >> 10; - result[i].num_reg = num_reg; - if (range_sums < range_sums_new) { - result[i].lose_cover_sizek = - (range_sums_new - range_sums) << PSHIFT; - result[i].bad = 1; - } else - result[i].lose_cover_sizek = - (range_sums - range_sums_new) << PSHIFT; - - /* double check it */ - if (!result[i].bad && !result[i].lose_cover_sizek) { - if (nr_range_new != nr_range || - memcmp(range, range_new, sizeof(range))) - result[i].bad = 1; - } - - if (!result[i].bad && (range_sums - range_sums_new < - min_loss_pfn[num_reg])) { - min_loss_pfn[num_reg] = - range_sums - range_sums_new; - } -} - -static void __init mtrr_print_out_one_result(int i) -{ - char gran_factor, chunk_factor, lose_factor; - unsigned long gran_base, chunk_base, lose_base; - - gran_base = to_size_factor(result[i].gran_sizek, &gran_factor), - chunk_base = to_size_factor(result[i].chunk_sizek, &chunk_factor), - lose_base = to_size_factor(result[i].lose_cover_sizek, &lose_factor), - printk(KERN_INFO "%sgran_size: %ld%c \tchunk_size: %ld%c \t", - result[i].bad ? "*BAD*" : " ", - gran_base, gran_factor, chunk_base, chunk_factor); - printk(KERN_CONT "num_reg: %d \tlose cover RAM: %s%ld%c\n", - result[i].num_reg, result[i].bad ? "-" : "", - lose_base, lose_factor); -} - -static int __init mtrr_search_optimal_index(void) -{ - int i; - int num_reg_good; - int index_good; - - if (nr_mtrr_spare_reg >= num_var_ranges) - nr_mtrr_spare_reg = num_var_ranges - 1; - num_reg_good = -1; - for (i = num_var_ranges - nr_mtrr_spare_reg; i > 0; i--) { - if (!min_loss_pfn[i]) - num_reg_good = i; - } - - index_good = -1; - if (num_reg_good != -1) { - for (i = 0; i < NUM_RESULT; i++) { - if (!result[i].bad && - result[i].num_reg == num_reg_good && - !result[i].lose_cover_sizek) { - index_good = i; - break; - } - } - } - - return index_good; -} - - -static int __init mtrr_cleanup(unsigned address_bits) -{ - unsigned long extra_remove_base, extra_remove_size; - unsigned long base, size, def, dummy; - mtrr_type type; - u64 chunk_size, gran_size; - int index_good; - int i; - - if (!is_cpu(INTEL) || enable_mtrr_cleanup < 1) - return 0; - rdmsr(MTRRdefType_MSR, def, dummy); - def &= 0xff; - if (def != MTRR_TYPE_UNCACHABLE) - return 0; - - /* get it and store it aside */ - memset(range_state, 0, sizeof(range_state)); - for (i = 0; i < num_var_ranges; i++) { - mtrr_if->get(i, &base, &size, &type); - range_state[i].base_pfn = base; - range_state[i].size_pfn = size; - range_state[i].type = type; - } - - /* check if we need handle it and can handle it */ - if (!mtrr_need_cleanup()) - return 0; - - /* print original var MTRRs at first, for debugging: */ - printk(KERN_DEBUG "original variable MTRRs\n"); - print_out_mtrr_range_state(); - - memset(range, 0, sizeof(range)); - extra_remove_size = 0; - extra_remove_base = 1 << (32 - PAGE_SHIFT); - if (mtrr_tom2) - extra_remove_size = - (mtrr_tom2 >> PAGE_SHIFT) - extra_remove_base; - nr_range = x86_get_mtrr_mem_range(range, 0, extra_remove_base, - extra_remove_size); - /* - * [0, 1M) should always be coverred by var mtrr with WB - * and fixed mtrrs should take effective before var mtrr for it - */ - nr_range = add_range_with_merge(range, nr_range, 0, - (1ULL<<(20 - PAGE_SHIFT)) - 1); - /* sort the ranges */ - sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); - - range_sums = sum_ranges(range, nr_range); - printk(KERN_INFO "total RAM coverred: %ldM\n", - range_sums >> (20 - PAGE_SHIFT)); - - if (mtrr_chunk_size && mtrr_gran_size) { - i = 0; - mtrr_calc_range_state(mtrr_chunk_size, mtrr_gran_size, - extra_remove_base, extra_remove_size, i); - - mtrr_print_out_one_result(i); - - if (!result[i].bad) { - set_var_mtrr_all(address_bits); - printk(KERN_DEBUG "New variable MTRRs\n"); - print_out_mtrr_range_state(); - return 1; - } - printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, " - "will find optimal one\n"); - } - - i = 0; - memset(min_loss_pfn, 0xff, sizeof(min_loss_pfn)); - memset(result, 0, sizeof(result)); - for (gran_size = (1ULL<<16); gran_size < (1ULL<<32); gran_size <<= 1) { - - for (chunk_size = gran_size; chunk_size < (1ULL<<32); - chunk_size <<= 1) { - - if (i >= NUM_RESULT) - continue; - - mtrr_calc_range_state(chunk_size, gran_size, - extra_remove_base, extra_remove_size, i); - if (debug_print) { - mtrr_print_out_one_result(i); - printk(KERN_INFO "\n"); - } - - i++; - } - } - - /* try to find the optimal index */ - index_good = mtrr_search_optimal_index(); - - if (index_good != -1) { - printk(KERN_INFO "Found optimal setting for mtrr clean up\n"); - i = index_good; - mtrr_print_out_one_result(i); - - /* convert ranges to var ranges state */ - chunk_size = result[i].chunk_sizek; - chunk_size <<= 10; - gran_size = result[i].gran_sizek; - gran_size <<= 10; - x86_setup_var_mtrrs(range, nr_range, chunk_size, gran_size); - set_var_mtrr_all(address_bits); - printk(KERN_DEBUG "New variable MTRRs\n"); - print_out_mtrr_range_state(); - return 1; - } else { - /* print out all */ - for (i = 0; i < NUM_RESULT; i++) - mtrr_print_out_one_result(i); - } - - printk(KERN_INFO "mtrr_cleanup: can not find optimal value\n"); - printk(KERN_INFO "please specify mtrr_gran_size/mtrr_chunk_size\n"); - - return 0; -} -#else -static int __init mtrr_cleanup(unsigned address_bits) -{ - return 0; -} -#endif - -static int __initdata changed_by_mtrr_cleanup; - -static int disable_mtrr_trim; - -static int __init disable_mtrr_trim_setup(char *str) -{ - disable_mtrr_trim = 1; - return 0; -} -early_param("disable_mtrr_trim", disable_mtrr_trim_setup); - -/* - * Newer AMD K8s and later CPUs have a special magic MSR way to force WB - * for memory >4GB. Check for that here. - * Note this won't check if the MTRRs < 4GB where the magic bit doesn't - * apply to are wrong, but so far we don't know of any such case in the wild. - */ -#define Tom2Enabled (1U << 21) -#define Tom2ForceMemTypeWB (1U << 22) - -int __init amd_special_default_mtrr(void) -{ - u32 l, h; - - if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) - return 0; - if (boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x11) - return 0; - /* In case some hypervisor doesn't pass SYSCFG through */ - if (rdmsr_safe(MSR_K8_SYSCFG, &l, &h) < 0) - return 0; - /* - * Memory between 4GB and top of mem is forced WB by this magic bit. - * Reserved before K8RevF, but should be zero there. - */ - if ((l & (Tom2Enabled | Tom2ForceMemTypeWB)) == - (Tom2Enabled | Tom2ForceMemTypeWB)) - return 1; - return 0; -} - -static u64 __init real_trim_memory(unsigned long start_pfn, - unsigned long limit_pfn) -{ - u64 trim_start, trim_size; - trim_start = start_pfn; - trim_start <<= PAGE_SHIFT; - trim_size = limit_pfn; - trim_size <<= PAGE_SHIFT; - trim_size -= trim_start; - - return e820_update_range(trim_start, trim_size, E820_RAM, - E820_RESERVED); -} -/** - * mtrr_trim_uncached_memory - trim RAM not covered by MTRRs - * @end_pfn: ending page frame number - * - * Some buggy BIOSes don't setup the MTRRs properly for systems with certain - * memory configurations. This routine checks that the highest MTRR matches - * the end of memory, to make sure the MTRRs having a write back type cover - * all of the memory the kernel is intending to use. If not, it'll trim any - * memory off the end by adjusting end_pfn, removing it from the kernel's - * allocation pools, warning the user with an obnoxious message. - */ -int __init mtrr_trim_uncached_memory(unsigned long end_pfn) -{ - unsigned long i, base, size, highest_pfn = 0, def, dummy; - mtrr_type type; - u64 total_trim_size; - - /* extra one for all 0 */ - int num[MTRR_NUM_TYPES + 1]; - /* - * Make sure we only trim uncachable memory on machines that - * support the Intel MTRR architecture: - */ - if (!is_cpu(INTEL) || disable_mtrr_trim) - return 0; - rdmsr(MTRRdefType_MSR, def, dummy); - def &= 0xff; - if (def != MTRR_TYPE_UNCACHABLE) - return 0; - - /* get it and store it aside */ - memset(range_state, 0, sizeof(range_state)); - for (i = 0; i < num_var_ranges; i++) { - mtrr_if->get(i, &base, &size, &type); - range_state[i].base_pfn = base; - range_state[i].size_pfn = size; - range_state[i].type = type; - } - - /* Find highest cached pfn */ - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type != MTRR_TYPE_WRBACK) - continue; - base = range_state[i].base_pfn; - size = range_state[i].size_pfn; - if (highest_pfn < base + size) - highest_pfn = base + size; - } - - /* kvm/qemu doesn't have mtrr set right, don't trim them all */ - if (!highest_pfn) { - printk(KERN_INFO "CPU MTRRs all blank - virtualized system.\n"); - return 0; - } - - /* check entries number */ - memset(num, 0, sizeof(num)); - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type >= MTRR_NUM_TYPES) - continue; - size = range_state[i].size_pfn; - if (!size) - type = MTRR_NUM_TYPES; - num[type]++; - } - - /* no entry for WB? */ - if (!num[MTRR_TYPE_WRBACK]) - return 0; - - /* check if we only had WB and UC */ - if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != - num_var_ranges - num[MTRR_NUM_TYPES]) - return 0; - - memset(range, 0, sizeof(range)); - nr_range = 0; - if (mtrr_tom2) { - range[nr_range].start = (1ULL<<(32 - PAGE_SHIFT)); - range[nr_range].end = (mtrr_tom2 >> PAGE_SHIFT) - 1; - if (highest_pfn < range[nr_range].end + 1) - highest_pfn = range[nr_range].end + 1; - nr_range++; - } - nr_range = x86_get_mtrr_mem_range(range, nr_range, 0, 0); - - total_trim_size = 0; - /* check the head */ - if (range[0].start) - total_trim_size += real_trim_memory(0, range[0].start); - /* check the holes */ - for (i = 0; i < nr_range - 1; i++) { - if (range[i].end + 1 < range[i+1].start) - total_trim_size += real_trim_memory(range[i].end + 1, - range[i+1].start); - } - /* check the top */ - i = nr_range - 1; - if (range[i].end + 1 < end_pfn) - total_trim_size += real_trim_memory(range[i].end + 1, - end_pfn); - - if (total_trim_size) { - printk(KERN_WARNING "WARNING: BIOS bug: CPU MTRRs don't cover" - " all of memory, losing %lluMB of RAM.\n", - total_trim_size >> 20); - - if (!changed_by_mtrr_cleanup) - WARN_ON(1); - - printk(KERN_INFO "update e820 for mtrr\n"); - update_e820(); - - return 1; - } - - return 0; -} +int __initdata changed_by_mtrr_cleanup; /** * mtrr_bp_init - initialize mtrrs on the boot CPU Index: linux-2.6/arch/x86/kernel/cpu/mtrr/mtrr.h =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/mtrr.h +++ linux-2.6/arch/x86/kernel/cpu/mtrr/mtrr.h @@ -88,3 +88,6 @@ void mtrr_wrmsr(unsigned, unsigned, unsi int amd_init_mtrr(void); int cyrix_init_mtrr(void); int centaur_init_mtrr(void); + +extern int changed_by_mtrr_cleanup; +extern int mtrr_cleanup(unsigned address_bits); Index: linux-2.6/arch/x86/kernel/cpu/mtrr/Makefile =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/Makefile +++ linux-2.6/arch/x86/kernel/cpu/mtrr/Makefile @@ -1,3 +1,3 @@ -obj-y := main.o if.o generic.o state.o +obj-y := main.o if.o generic.o state.o cleanup.o obj-$(CONFIG_X86_32) += amd.o cyrix.o centaur.o Index: linux-2.6/arch/x86/kernel/cpu/mtrr/cleanup.c =================================================================== --- /dev/null +++ linux-2.6/arch/x86/kernel/cpu/mtrr/cleanup.c @@ -0,0 +1,1089 @@ +/* MTRR (Memory Type Range Register) cleanup + + Copyright (C) 2009 Yinghai Lu + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/smp.h> +#include <linux/cpu.h> +#include <linux/mutex.h> +#include <linux/sort.h> + +#include <asm/e820.h> +#include <asm/mtrr.h> +#include <asm/uaccess.h> +#include <asm/processor.h> +#include <asm/msr.h> +#include <asm/kvm_para.h> +#include "mtrr.h" + +/* should be related to MTRR_VAR_RANGES nums */ +#define RANGE_NUM 256 + +struct res_range { + unsigned long start; + unsigned long end; +}; + +static int __init +add_range(struct res_range *range, int nr_range, unsigned long start, + unsigned long end) +{ + /* out of slots */ + if (nr_range >= RANGE_NUM) + return nr_range; + + range[nr_range].start = start; + range[nr_range].end = end; + + nr_range++; + + return nr_range; +} + +static int __init +add_range_with_merge(struct res_range *range, int nr_range, unsigned long start, + unsigned long end) +{ + int i; + + /* try to merge it with old one */ + for (i = 0; i < nr_range; i++) { + unsigned long final_start, final_end; + unsigned long common_start, common_end; + + if (!range[i].end) + continue; + + common_start = max(range[i].start, start); + common_end = min(range[i].end, end); + if (common_start > common_end + 1) + continue; + + final_start = min(range[i].start, start); + final_end = max(range[i].end, end); + + range[i].start = final_start; + range[i].end = final_end; + return nr_range; + } + + /* need to add that */ + return add_range(range, nr_range, start, end); +} + +static void __init +subtract_range(struct res_range *range, unsigned long start, unsigned long end) +{ + int i, j; + + for (j = 0; j < RANGE_NUM; j++) { + if (!range[j].end) + continue; + + if (start <= range[j].start && end >= range[j].end) { + range[j].start = 0; + range[j].end = 0; + continue; + } + + if (start <= range[j].start && end < range[j].end && + range[j].start < end + 1) { + range[j].start = end + 1; + continue; + } + + + if (start > range[j].start && end >= range[j].end && + range[j].end > start - 1) { + range[j].end = start - 1; + continue; + } + + if (start > range[j].start && end < range[j].end) { + /* find the new spare */ + for (i = 0; i < RANGE_NUM; i++) { + if (range[i].end == 0) + break; + } + if (i < RANGE_NUM) { + range[i].end = range[j].end; + range[i].start = end + 1; + } else { + printk(KERN_ERR "run of slot in ranges\n"); + } + range[j].end = start - 1; + continue; + } + } +} + +static int __init cmp_range(const void *x1, const void *x2) +{ + const struct res_range *r1 = x1; + const struct res_range *r2 = x2; + long start1, start2; + + start1 = r1->start; + start2 = r2->start; + + return start1 - start2; +} + +struct var_mtrr_range_state { + unsigned long base_pfn; + unsigned long size_pfn; + mtrr_type type; +}; + +static struct var_mtrr_range_state __initdata range_state[RANGE_NUM]; +static int __initdata debug_print; + +static int __init +x86_get_mtrr_mem_range(struct res_range *range, int nr_range, + unsigned long extra_remove_base, + unsigned long extra_remove_size) +{ + unsigned long i, base, size; + mtrr_type type; + + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type != MTRR_TYPE_WRBACK) + continue; + base = range_state[i].base_pfn; + size = range_state[i].size_pfn; + nr_range = add_range_with_merge(range, nr_range, base, + base + size - 1); + } + if (debug_print) { + printk(KERN_DEBUG "After WB checking\n"); + for (i = 0; i < nr_range; i++) + printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", + range[i].start, range[i].end + 1); + } + + /* take out UC ranges */ + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type != MTRR_TYPE_UNCACHABLE && + type != MTRR_TYPE_WRPROT) + continue; + size = range_state[i].size_pfn; + if (!size) + continue; + base = range_state[i].base_pfn; + subtract_range(range, base, base + size - 1); + } + if (extra_remove_size) + subtract_range(range, extra_remove_base, + extra_remove_base + extra_remove_size - 1); + + /* get new range num */ + nr_range = 0; + for (i = 0; i < RANGE_NUM; i++) { + if (!range[i].end) + continue; + nr_range++; + } + if (debug_print) { + printk(KERN_DEBUG "After UC checking\n"); + for (i = 0; i < nr_range; i++) + printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", + range[i].start, range[i].end + 1); + } + + /* sort the ranges */ + sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); + if (debug_print) { + printk(KERN_DEBUG "After sorting\n"); + for (i = 0; i < nr_range; i++) + printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", + range[i].start, range[i].end + 1); + } + + /* clear those is not used */ + for (i = nr_range; i < RANGE_NUM; i++) + memset(&range[i], 0, sizeof(range[i])); + + return nr_range; +} + +static struct res_range __initdata range[RANGE_NUM]; +static int __initdata nr_range; + +#ifdef CONFIG_MTRR_SANITIZER + +static unsigned long __init sum_ranges(struct res_range *range, int nr_range) +{ + unsigned long sum; + int i; + + sum = 0; + for (i = 0; i < nr_range; i++) + sum += range[i].end + 1 - range[i].start; + + return sum; +} + +static int enable_mtrr_cleanup __initdata = + CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT; + +static int __init disable_mtrr_cleanup_setup(char *str) +{ + enable_mtrr_cleanup = 0; + return 0; +} +early_param("disable_mtrr_cleanup", disable_mtrr_cleanup_setup); + +static int __init enable_mtrr_cleanup_setup(char *str) +{ + enable_mtrr_cleanup = 1; + return 0; +} +early_param("enable_mtrr_cleanup", enable_mtrr_cleanup_setup); + +static int __init mtrr_cleanup_debug_setup(char *str) +{ + debug_print = 1; + return 0; +} +early_param("mtrr_cleanup_debug", mtrr_cleanup_debug_setup); + +struct var_mtrr_state { + unsigned long range_startk; + unsigned long range_sizek; + unsigned long chunk_sizek; + unsigned long gran_sizek; + unsigned int reg; +}; + +static void __init +set_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, + unsigned char type, unsigned int address_bits) +{ + u32 base_lo, base_hi, mask_lo, mask_hi; + u64 base, mask; + + if (!sizek) { + fill_mtrr_var_range(reg, 0, 0, 0, 0); + return; + } + + mask = (1ULL << address_bits) - 1; + mask &= ~((((u64)sizek) << 10) - 1); + + base = ((u64)basek) << 10; + + base |= type; + mask |= 0x800; + + base_lo = base & ((1ULL<<32) - 1); + base_hi = base >> 32; + + mask_lo = mask & ((1ULL<<32) - 1); + mask_hi = mask >> 32; + + fill_mtrr_var_range(reg, base_lo, base_hi, mask_lo, mask_hi); +} + +static void __init +save_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, + unsigned char type) +{ + range_state[reg].base_pfn = basek >> (PAGE_SHIFT - 10); + range_state[reg].size_pfn = sizek >> (PAGE_SHIFT - 10); + range_state[reg].type = type; +} + +static void __init +set_var_mtrr_all(unsigned int address_bits) +{ + unsigned long basek, sizek; + unsigned char type; + unsigned int reg; + + for (reg = 0; reg < num_var_ranges; reg++) { + basek = range_state[reg].base_pfn << (PAGE_SHIFT - 10); + sizek = range_state[reg].size_pfn << (PAGE_SHIFT - 10); + type = range_state[reg].type; + + set_var_mtrr(reg, basek, sizek, type, address_bits); + } +} + +static unsigned long to_size_factor(unsigned long sizek, char *factorp) +{ + char factor; + unsigned long base = sizek; + + if (base & ((1<<10) - 1)) { + /* not MB alignment */ + factor = 'K'; + } else if (base & ((1<<20) - 1)) { + factor = 'M'; + base >>= 10; + } else { + factor = 'G'; + base >>= 20; + } + + *factorp = factor; + + return base; +} + +static unsigned int __init +range_to_mtrr(unsigned int reg, unsigned long range_startk, + unsigned long range_sizek, unsigned char type) +{ + if (!range_sizek || (reg >= num_var_ranges)) + return reg; + + while (range_sizek) { + unsigned long max_align, align; + unsigned long sizek; + + /* Compute the maximum size I can make a range */ + if (range_startk) + max_align = ffs(range_startk) - 1; + else + max_align = 32; + align = fls(range_sizek) - 1; + if (align > max_align) + align = max_align; + + sizek = 1 << align; + if (debug_print) { + char start_factor = 'K', size_factor = 'K'; + unsigned long start_base, size_base; + + start_base = to_size_factor(range_startk, + &start_factor), + size_base = to_size_factor(sizek, &size_factor), + + printk(KERN_DEBUG "Setting variable MTRR %d, " + "base: %ld%cB, range: %ld%cB, type %s\n", + reg, start_base, start_factor, + size_base, size_factor, + (type == MTRR_TYPE_UNCACHABLE) ? "UC" : + ((type == MTRR_TYPE_WRBACK) ? "WB" : "Other") + ); + } + save_var_mtrr(reg++, range_startk, sizek, type); + range_startk += sizek; + range_sizek -= sizek; + if (reg >= num_var_ranges) + break; + } + return reg; +} + +static unsigned __init +range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek, + unsigned long sizek) +{ + unsigned long hole_basek, hole_sizek; + unsigned long second_basek, second_sizek; + unsigned long range0_basek, range0_sizek; + unsigned long range_basek, range_sizek; + unsigned long chunk_sizek; + unsigned long gran_sizek; + + hole_basek = 0; + hole_sizek = 0; + second_basek = 0; + second_sizek = 0; + chunk_sizek = state->chunk_sizek; + gran_sizek = state->gran_sizek; + + /* align with gran size, prevent small block used up MTRRs */ + range_basek = ALIGN(state->range_startk, gran_sizek); + if ((range_basek > basek) && basek) + return second_sizek; + state->range_sizek -= (range_basek - state->range_startk); + range_sizek = ALIGN(state->range_sizek, gran_sizek); + + while (range_sizek > state->range_sizek) { + range_sizek -= gran_sizek; + if (!range_sizek) + return 0; + } + state->range_sizek = range_sizek; + + /* try to append some small hole */ + range0_basek = state->range_startk; + range0_sizek = ALIGN(state->range_sizek, chunk_sizek); + + /* no increase */ + if (range0_sizek == state->range_sizek) { + if (debug_print) + printk(KERN_DEBUG "rangeX: %016lx - %016lx\n", + range0_basek<<10, + (range0_basek + state->range_sizek)<<10); + state->reg = range_to_mtrr(state->reg, range0_basek, + state->range_sizek, MTRR_TYPE_WRBACK); + return 0; + } + + /* only cut back, when it is not the last */ + if (sizek) { + while (range0_basek + range0_sizek > (basek + sizek)) { + if (range0_sizek >= chunk_sizek) + range0_sizek -= chunk_sizek; + else + range0_sizek = 0; + + if (!range0_sizek) + break; + } + } + +second_try: + range_basek = range0_basek + range0_sizek; + + /* one hole in the middle */ + if (range_basek > basek && range_basek <= (basek + sizek)) + second_sizek = range_basek - basek; + + if (range0_sizek > state->range_sizek) { + + /* one hole in middle or at end */ + hole_sizek = range0_sizek - state->range_sizek - second_sizek; + + /* hole size should be less than half of range0 size */ + if (hole_sizek >= (range0_sizek >> 1) && + range0_sizek >= chunk_sizek) { + range0_sizek -= chunk_sizek; + second_sizek = 0; + hole_sizek = 0; + + goto second_try; + } + } + + if (range0_sizek) { + if (debug_print) + printk(KERN_DEBUG "range0: %016lx - %016lx\n", + range0_basek<<10, + (range0_basek + range0_sizek)<<10); + state->reg = range_to_mtrr(state->reg, range0_basek, + range0_sizek, MTRR_TYPE_WRBACK); + } + + if (range0_sizek < state->range_sizek) { + /* need to handle left over */ + range_sizek = state->range_sizek - range0_sizek; + + if (debug_print) + printk(KERN_DEBUG "range: %016lx - %016lx\n", + range_basek<<10, + (range_basek + range_sizek)<<10); + state->reg = range_to_mtrr(state->reg, range_basek, + range_sizek, MTRR_TYPE_WRBACK); + } + + if (hole_sizek) { + hole_basek = range_basek - hole_sizek - second_sizek; + if (debug_print) + printk(KERN_DEBUG "hole: %016lx - %016lx\n", + hole_basek<<10, + (hole_basek + hole_sizek)<<10); + state->reg = range_to_mtrr(state->reg, hole_basek, + hole_sizek, MTRR_TYPE_UNCACHABLE); + } + + return second_sizek; +} + +static void __init +set_var_mtrr_range(struct var_mtrr_state *state, unsigned long base_pfn, + unsigned long size_pfn) +{ + unsigned long basek, sizek; + unsigned long second_sizek = 0; + + if (state->reg >= num_var_ranges) + return; + + basek = base_pfn << (PAGE_SHIFT - 10); + sizek = size_pfn << (PAGE_SHIFT - 10); + + /* See if I can merge with the last range */ + if ((basek <= 1024) || + (state->range_startk + state->range_sizek == basek)) { + unsigned long endk = basek + sizek; + state->range_sizek = endk - state->range_startk; + return; + } + /* Write the range mtrrs */ + if (state->range_sizek != 0) + second_sizek = range_to_mtrr_with_hole(state, basek, sizek); + + /* Allocate an msr */ + state->range_startk = basek + second_sizek; + state->range_sizek = sizek - second_sizek; +} + +/* mininum size of mtrr block that can take hole */ +static u64 mtrr_chunk_size __initdata = (256ULL<<20); + +static int __init parse_mtrr_chunk_size_opt(char *p) +{ + if (!p) + return -EINVAL; + mtrr_chunk_size = memparse(p, &p); + return 0; +} +early_param("mtrr_chunk_size", parse_mtrr_chunk_size_opt); + +/* granity of mtrr of block */ +static u64 mtrr_gran_size __initdata; + +static int __init parse_mtrr_gran_size_opt(char *p) +{ + if (!p) + return -EINVAL; + mtrr_gran_size = memparse(p, &p); + return 0; +} +early_param("mtrr_gran_size", parse_mtrr_gran_size_opt); + +static int nr_mtrr_spare_reg __initdata = + CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT; + +static int __init parse_mtrr_spare_reg(char *arg) +{ + if (arg) + nr_mtrr_spare_reg = simple_strtoul(arg, NULL, 0); + return 0; +} + +early_param("mtrr_spare_reg_nr", parse_mtrr_spare_reg); + +static int __init +x86_setup_var_mtrrs(struct res_range *range, int nr_range, + u64 chunk_size, u64 gran_size) +{ + struct var_mtrr_state var_state; + int i; + int num_reg; + + var_state.range_startk = 0; + var_state.range_sizek = 0; + var_state.reg = 0; + var_state.chunk_sizek = chunk_size >> 10; + var_state.gran_sizek = gran_size >> 10; + + memset(range_state, 0, sizeof(range_state)); + + /* Write the range etc */ + for (i = 0; i < nr_range; i++) + set_var_mtrr_range(&var_state, range[i].start, + range[i].end - range[i].start + 1); + + /* Write the last range */ + if (var_state.range_sizek != 0) + range_to_mtrr_with_hole(&var_state, 0, 0); + + num_reg = var_state.reg; + /* Clear out the extra MTRR's */ + while (var_state.reg < num_var_ranges) { + save_var_mtrr(var_state.reg, 0, 0, 0); + var_state.reg++; + } + + return num_reg; +} + +struct mtrr_cleanup_result { + unsigned long gran_sizek; + unsigned long chunk_sizek; + unsigned long lose_cover_sizek; + unsigned int num_reg; + int bad; +}; + +/* + * gran_size: 64K, 128K, 256K, 512K, 1M, 2M, ..., 2G + * chunk size: gran_size, ..., 2G + * so we need (1+16)*8 + */ +#define NUM_RESULT 136 +#define PSHIFT (PAGE_SHIFT - 10) + +static struct mtrr_cleanup_result __initdata result[NUM_RESULT]; +static unsigned long __initdata min_loss_pfn[RANGE_NUM]; + +static void __init print_out_mtrr_range_state(void) +{ + int i; + char start_factor = 'K', size_factor = 'K'; + unsigned long start_base, size_base; + mtrr_type type; + + for (i = 0; i < num_var_ranges; i++) { + + size_base = range_state[i].size_pfn << (PAGE_SHIFT - 10); + if (!size_base) + continue; + + size_base = to_size_factor(size_base, &size_factor), + start_base = range_state[i].base_pfn << (PAGE_SHIFT - 10); + start_base = to_size_factor(start_base, &start_factor), + type = range_state[i].type; + + printk(KERN_DEBUG "reg %d, base: %ld%cB, range: %ld%cB, type %s\n", + i, start_base, start_factor, + size_base, size_factor, + (type == MTRR_TYPE_UNCACHABLE) ? "UC" : + ((type == MTRR_TYPE_WRPROT) ? "WP" : + ((type == MTRR_TYPE_WRBACK) ? "WB" : "Other")) + ); + } +} + +static int __init mtrr_need_cleanup(void) +{ + int i; + mtrr_type type; + unsigned long size; + /* extra one for all 0 */ + int num[MTRR_NUM_TYPES + 1]; + + /* check entries number */ + memset(num, 0, sizeof(num)); + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + size = range_state[i].size_pfn; + if (type >= MTRR_NUM_TYPES) + continue; + if (!size) + type = MTRR_NUM_TYPES; + if (type == MTRR_TYPE_WRPROT) + type = MTRR_TYPE_UNCACHABLE; + num[type]++; + } + + /* check if we got UC entries */ + if (!num[MTRR_TYPE_UNCACHABLE]) + return 0; + + /* check if we only had WB and UC */ + if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != + num_var_ranges - num[MTRR_NUM_TYPES]) + return 0; + + return 1; +} + +static unsigned long __initdata range_sums; +static void __init mtrr_calc_range_state(u64 chunk_size, u64 gran_size, + unsigned long extra_remove_base, + unsigned long extra_remove_size, + int i) +{ + int num_reg; + static struct res_range range_new[RANGE_NUM]; + static int nr_range_new; + unsigned long range_sums_new; + + /* convert ranges to var ranges state */ + num_reg = x86_setup_var_mtrrs(range, nr_range, + chunk_size, gran_size); + + /* we got new setting in range_state, check it */ + memset(range_new, 0, sizeof(range_new)); + nr_range_new = x86_get_mtrr_mem_range(range_new, 0, + extra_remove_base, extra_remove_size); + range_sums_new = sum_ranges(range_new, nr_range_new); + + result[i].chunk_sizek = chunk_size >> 10; + result[i].gran_sizek = gran_size >> 10; + result[i].num_reg = num_reg; + if (range_sums < range_sums_new) { + result[i].lose_cover_sizek = + (range_sums_new - range_sums) << PSHIFT; + result[i].bad = 1; + } else + result[i].lose_cover_sizek = + (range_sums - range_sums_new) << PSHIFT; + + /* double check it */ + if (!result[i].bad && !result[i].lose_cover_sizek) { + if (nr_range_new != nr_range || + memcmp(range, range_new, sizeof(range))) + result[i].bad = 1; + } + + if (!result[i].bad && (range_sums - range_sums_new < + min_loss_pfn[num_reg])) { + min_loss_pfn[num_reg] = + range_sums - range_sums_new; + } +} + +static void __init mtrr_print_out_one_result(int i) +{ + char gran_factor, chunk_factor, lose_factor; + unsigned long gran_base, chunk_base, lose_base; + + gran_base = to_size_factor(result[i].gran_sizek, &gran_factor), + chunk_base = to_size_factor(result[i].chunk_sizek, &chunk_factor), + lose_base = to_size_factor(result[i].lose_cover_sizek, &lose_factor), + printk(KERN_INFO "%sgran_size: %ld%c \tchunk_size: %ld%c \t", + result[i].bad ? "*BAD*" : " ", + gran_base, gran_factor, chunk_base, chunk_factor); + printk(KERN_CONT "num_reg: %d \tlose cover RAM: %s%ld%c\n", + result[i].num_reg, result[i].bad ? "-" : "", + lose_base, lose_factor); +} + +static int __init mtrr_search_optimal_index(void) +{ + int i; + int num_reg_good; + int index_good; + + if (nr_mtrr_spare_reg >= num_var_ranges) + nr_mtrr_spare_reg = num_var_ranges - 1; + num_reg_good = -1; + for (i = num_var_ranges - nr_mtrr_spare_reg; i > 0; i--) { + if (!min_loss_pfn[i]) + num_reg_good = i; + } + + index_good = -1; + if (num_reg_good != -1) { + for (i = 0; i < NUM_RESULT; i++) { + if (!result[i].bad && + result[i].num_reg == num_reg_good && + !result[i].lose_cover_sizek) { + index_good = i; + break; + } + } + } + + return index_good; +} + + +int __init mtrr_cleanup(unsigned address_bits) +{ + unsigned long extra_remove_base, extra_remove_size; + unsigned long base, size, def, dummy; + mtrr_type type; + u64 chunk_size, gran_size; + int index_good; + int i; + + if (!is_cpu(INTEL) || enable_mtrr_cleanup < 1) + return 0; + rdmsr(MTRRdefType_MSR, def, dummy); + def &= 0xff; + if (def != MTRR_TYPE_UNCACHABLE) + return 0; + + /* get it and store it aside */ + memset(range_state, 0, sizeof(range_state)); + for (i = 0; i < num_var_ranges; i++) { + mtrr_if->get(i, &base, &size, &type); + range_state[i].base_pfn = base; + range_state[i].size_pfn = size; + range_state[i].type = type; + } + + /* check if we need handle it and can handle it */ + if (!mtrr_need_cleanup()) + return 0; + + /* print original var MTRRs at first, for debugging: */ + printk(KERN_DEBUG "original variable MTRRs\n"); + print_out_mtrr_range_state(); + + memset(range, 0, sizeof(range)); + extra_remove_size = 0; + extra_remove_base = 1 << (32 - PAGE_SHIFT); + if (mtrr_tom2) + extra_remove_size = + (mtrr_tom2 >> PAGE_SHIFT) - extra_remove_base; + nr_range = x86_get_mtrr_mem_range(range, 0, extra_remove_base, + extra_remove_size); + /* + * [0, 1M) should always be coverred by var mtrr with WB + * and fixed mtrrs should take effective before var mtrr for it + */ + nr_range = add_range_with_merge(range, nr_range, 0, + (1ULL<<(20 - PAGE_SHIFT)) - 1); + /* sort the ranges */ + sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); + + range_sums = sum_ranges(range, nr_range); + printk(KERN_INFO "total RAM coverred: %ldM\n", + range_sums >> (20 - PAGE_SHIFT)); + + if (mtrr_chunk_size && mtrr_gran_size) { + i = 0; + mtrr_calc_range_state(mtrr_chunk_size, mtrr_gran_size, + extra_remove_base, extra_remove_size, i); + + mtrr_print_out_one_result(i); + + if (!result[i].bad) { + set_var_mtrr_all(address_bits); + printk(KERN_DEBUG "New variable MTRRs\n"); + print_out_mtrr_range_state(); + return 1; + } + printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, " + "will find optimal one\n"); + } + + i = 0; + memset(min_loss_pfn, 0xff, sizeof(min_loss_pfn)); + memset(result, 0, sizeof(result)); + for (gran_size = (1ULL<<16); gran_size < (1ULL<<32); gran_size <<= 1) { + + for (chunk_size = gran_size; chunk_size < (1ULL<<32); + chunk_size <<= 1) { + + if (i >= NUM_RESULT) + continue; + + mtrr_calc_range_state(chunk_size, gran_size, + extra_remove_base, extra_remove_size, i); + if (debug_print) { + mtrr_print_out_one_result(i); + printk(KERN_INFO "\n"); + } + + i++; + } + } + + /* try to find the optimal index */ + index_good = mtrr_search_optimal_index(); + + if (index_good != -1) { + printk(KERN_INFO "Found optimal setting for mtrr clean up\n"); + i = index_good; + mtrr_print_out_one_result(i); + + /* convert ranges to var ranges state */ + chunk_size = result[i].chunk_sizek; + chunk_size <<= 10; + gran_size = result[i].gran_sizek; + gran_size <<= 10; + x86_setup_var_mtrrs(range, nr_range, chunk_size, gran_size); + set_var_mtrr_all(address_bits); + printk(KERN_DEBUG "New variable MTRRs\n"); + print_out_mtrr_range_state(); + return 1; + } else { + /* print out all */ + for (i = 0; i < NUM_RESULT; i++) + mtrr_print_out_one_result(i); + } + + printk(KERN_INFO "mtrr_cleanup: can not find optimal value\n"); + printk(KERN_INFO "please specify mtrr_gran_size/mtrr_chunk_size\n"); + + return 0; +} +#else +int __init mtrr_cleanup(unsigned address_bits) +{ + return 0; +} +#endif + +static int disable_mtrr_trim; + +static int __init disable_mtrr_trim_setup(char *str) +{ + disable_mtrr_trim = 1; + return 0; +} +early_param("disable_mtrr_trim", disable_mtrr_trim_setup); + +/* + * Newer AMD K8s and later CPUs have a special magic MSR way to force WB + * for memory >4GB. Check for that here. + * Note this won't check if the MTRRs < 4GB where the magic bit doesn't + * apply to are wrong, but so far we don't know of any such case in the wild. + */ +#define Tom2Enabled (1U << 21) +#define Tom2ForceMemTypeWB (1U << 22) + +int __init amd_special_default_mtrr(void) +{ + u32 l, h; + + if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) + return 0; + if (boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x11) + return 0; + /* In case some hypervisor doesn't pass SYSCFG through */ + if (rdmsr_safe(MSR_K8_SYSCFG, &l, &h) < 0) + return 0; + /* + * Memory between 4GB and top of mem is forced WB by this magic bit. + * Reserved before K8RevF, but should be zero there. + */ + if ((l & (Tom2Enabled | Tom2ForceMemTypeWB)) == + (Tom2Enabled | Tom2ForceMemTypeWB)) + return 1; + return 0; +} + +static u64 __init real_trim_memory(unsigned long start_pfn, + unsigned long limit_pfn) +{ + u64 trim_start, trim_size; + trim_start = start_pfn; + trim_start <<= PAGE_SHIFT; + trim_size = limit_pfn; + trim_size <<= PAGE_SHIFT; + trim_size -= trim_start; + + return e820_update_range(trim_start, trim_size, E820_RAM, + E820_RESERVED); +} +/** + * mtrr_trim_uncached_memory - trim RAM not covered by MTRRs + * @end_pfn: ending page frame number + * + * Some buggy BIOSes don't setup the MTRRs properly for systems with certain + * memory configurations. This routine checks that the highest MTRR matches + * the end of memory, to make sure the MTRRs having a write back type cover + * all of the memory the kernel is intending to use. If not, it'll trim any + * memory off the end by adjusting end_pfn, removing it from the kernel's + * allocation pools, warning the user with an obnoxious message. + */ +int __init mtrr_trim_uncached_memory(unsigned long end_pfn) +{ + unsigned long i, base, size, highest_pfn = 0, def, dummy; + mtrr_type type; + u64 total_trim_size; + + /* extra one for all 0 */ + int num[MTRR_NUM_TYPES + 1]; + /* + * Make sure we only trim uncachable memory on machines that + * support the Intel MTRR architecture: + */ + if (!is_cpu(INTEL) || disable_mtrr_trim) + return 0; + rdmsr(MTRRdefType_MSR, def, dummy); + def &= 0xff; + if (def != MTRR_TYPE_UNCACHABLE) + return 0; + + /* get it and store it aside */ + memset(range_state, 0, sizeof(range_state)); + for (i = 0; i < num_var_ranges; i++) { + mtrr_if->get(i, &base, &size, &type); + range_state[i].base_pfn = base; + range_state[i].size_pfn = size; + range_state[i].type = type; + } + + /* Find highest cached pfn */ + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type != MTRR_TYPE_WRBACK) + continue; + base = range_state[i].base_pfn; + size = range_state[i].size_pfn; + if (highest_pfn < base + size) + highest_pfn = base + size; + } + + /* kvm/qemu doesn't have mtrr set right, don't trim them all */ + if (!highest_pfn) { + printk(KERN_INFO "CPU MTRRs all blank - virtualized system.\n"); + return 0; + } + + /* check entries number */ + memset(num, 0, sizeof(num)); + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type >= MTRR_NUM_TYPES) + continue; + size = range_state[i].size_pfn; + if (!size) + type = MTRR_NUM_TYPES; + num[type]++; + } + + /* no entry for WB? */ + if (!num[MTRR_TYPE_WRBACK]) + return 0; + + /* check if we only had WB and UC */ + if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != + num_var_ranges - num[MTRR_NUM_TYPES]) + return 0; + + memset(range, 0, sizeof(range)); + nr_range = 0; + if (mtrr_tom2) { + range[nr_range].start = (1ULL<<(32 - PAGE_SHIFT)); + range[nr_range].end = (mtrr_tom2 >> PAGE_SHIFT) - 1; + if (highest_pfn < range[nr_range].end + 1) + highest_pfn = range[nr_range].end + 1; + nr_range++; + } + nr_range = x86_get_mtrr_mem_range(range, nr_range, 0, 0); + + total_trim_size = 0; + /* check the head */ + if (range[0].start) + total_trim_size += real_trim_memory(0, range[0].start); + /* check the holes */ + for (i = 0; i < nr_range - 1; i++) { + if (range[i].end + 1 < range[i+1].start) + total_trim_size += real_trim_memory(range[i].end + 1, + range[i+1].start); + } + /* check the top */ + i = nr_range - 1; + if (range[i].end + 1 < end_pfn) + total_trim_size += real_trim_memory(range[i].end + 1, + end_pfn); + + if (total_trim_size) { + printk(KERN_WARNING "WARNING: BIOS bug: CPU MTRRs don't cover" + " all of memory, losing %lluMB of RAM.\n", + total_trim_size >> 20); + + if (!changed_by_mtrr_cleanup) + WARN_ON(1); + + printk(KERN_INFO "update e820 for mtrr\n"); + update_e820(); + + return 1; + } + + return 0; +} + ^ permalink raw reply [flat|nested] 19+ messages in thread
* [tip:x86/mtrr] x86: separate mtrr cleanup/mtrr_e820 trim to separate file 2009-03-12 3:07 ` [PATCH] x86: seperate mtrr cleanup/mtrr_e820 trim to seperated file Yinghai Lu @ 2009-03-13 2:34 ` Yinghai Lu 0 siblings, 0 replies; 19+ messages in thread From: Yinghai Lu @ 2009-03-13 2:34 UTC (permalink / raw) To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, yinghai, tglx, mingo Commit-ID: 0d890355bff25e1dc03a577a90ed80741489ca54 Gitweb: http://git.kernel.org/tip/0d890355bff25e1dc03a577a90ed80741489ca54 Author: Yinghai Lu <yinghai@kernel.org> AuthorDate: Wed, 11 Mar 2009 20:07:39 -0700 Commit: Ingo Molnar <mingo@elte.hu> CommitDate: Fri, 13 Mar 2009 02:52:19 +0100 x86: separate mtrr cleanup/mtrr_e820 trim to separate file Impact: cleanup mtrr main.c is too big, seperate mtrr cleanup and mtrr e820 trim code to another file. Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <49B87C7B.80809@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> --- arch/x86/kernel/cpu/mtrr/Makefile | 2 +- arch/x86/kernel/cpu/mtrr/cleanup.c | 1089 ++++++++++++++++++++++++++++++++++++ arch/x86/kernel/cpu/mtrr/main.c | 1055 +---------------------------------- arch/x86/kernel/cpu/mtrr/mtrr.h | 3 + 4 files changed, 1094 insertions(+), 1055 deletions(-) diff --git a/arch/x86/kernel/cpu/mtrr/Makefile b/arch/x86/kernel/cpu/mtrr/Makefile index 191fc05..f4361b5 100644 --- a/arch/x86/kernel/cpu/mtrr/Makefile +++ b/arch/x86/kernel/cpu/mtrr/Makefile @@ -1,3 +1,3 @@ -obj-y := main.o if.o generic.o state.o +obj-y := main.o if.o generic.o state.o cleanup.o obj-$(CONFIG_X86_32) += amd.o cyrix.o centaur.o diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c new file mode 100644 index 0000000..58b58bb --- /dev/null +++ b/arch/x86/kernel/cpu/mtrr/cleanup.c @@ -0,0 +1,1089 @@ +/* MTRR (Memory Type Range Register) cleanup + + Copyright (C) 2009 Yinghai Lu + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/smp.h> +#include <linux/cpu.h> +#include <linux/mutex.h> +#include <linux/sort.h> + +#include <asm/e820.h> +#include <asm/mtrr.h> +#include <asm/uaccess.h> +#include <asm/processor.h> +#include <asm/msr.h> +#include <asm/kvm_para.h> +#include "mtrr.h" + +/* should be related to MTRR_VAR_RANGES nums */ +#define RANGE_NUM 256 + +struct res_range { + unsigned long start; + unsigned long end; +}; + +static int __init +add_range(struct res_range *range, int nr_range, unsigned long start, + unsigned long end) +{ + /* out of slots */ + if (nr_range >= RANGE_NUM) + return nr_range; + + range[nr_range].start = start; + range[nr_range].end = end; + + nr_range++; + + return nr_range; +} + +static int __init +add_range_with_merge(struct res_range *range, int nr_range, unsigned long start, + unsigned long end) +{ + int i; + + /* try to merge it with old one */ + for (i = 0; i < nr_range; i++) { + unsigned long final_start, final_end; + unsigned long common_start, common_end; + + if (!range[i].end) + continue; + + common_start = max(range[i].start, start); + common_end = min(range[i].end, end); + if (common_start > common_end + 1) + continue; + + final_start = min(range[i].start, start); + final_end = max(range[i].end, end); + + range[i].start = final_start; + range[i].end = final_end; + return nr_range; + } + + /* need to add that */ + return add_range(range, nr_range, start, end); +} + +static void __init +subtract_range(struct res_range *range, unsigned long start, unsigned long end) +{ + int i, j; + + for (j = 0; j < RANGE_NUM; j++) { + if (!range[j].end) + continue; + + if (start <= range[j].start && end >= range[j].end) { + range[j].start = 0; + range[j].end = 0; + continue; + } + + if (start <= range[j].start && end < range[j].end && + range[j].start < end + 1) { + range[j].start = end + 1; + continue; + } + + + if (start > range[j].start && end >= range[j].end && + range[j].end > start - 1) { + range[j].end = start - 1; + continue; + } + + if (start > range[j].start && end < range[j].end) { + /* find the new spare */ + for (i = 0; i < RANGE_NUM; i++) { + if (range[i].end == 0) + break; + } + if (i < RANGE_NUM) { + range[i].end = range[j].end; + range[i].start = end + 1; + } else { + printk(KERN_ERR "run of slot in ranges\n"); + } + range[j].end = start - 1; + continue; + } + } +} + +static int __init cmp_range(const void *x1, const void *x2) +{ + const struct res_range *r1 = x1; + const struct res_range *r2 = x2; + long start1, start2; + + start1 = r1->start; + start2 = r2->start; + + return start1 - start2; +} + +struct var_mtrr_range_state { + unsigned long base_pfn; + unsigned long size_pfn; + mtrr_type type; +}; + +static struct var_mtrr_range_state __initdata range_state[RANGE_NUM]; +static int __initdata debug_print; + +static int __init +x86_get_mtrr_mem_range(struct res_range *range, int nr_range, + unsigned long extra_remove_base, + unsigned long extra_remove_size) +{ + unsigned long i, base, size; + mtrr_type type; + + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type != MTRR_TYPE_WRBACK) + continue; + base = range_state[i].base_pfn; + size = range_state[i].size_pfn; + nr_range = add_range_with_merge(range, nr_range, base, + base + size - 1); + } + if (debug_print) { + printk(KERN_DEBUG "After WB checking\n"); + for (i = 0; i < nr_range; i++) + printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", + range[i].start, range[i].end + 1); + } + + /* take out UC ranges */ + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type != MTRR_TYPE_UNCACHABLE && + type != MTRR_TYPE_WRPROT) + continue; + size = range_state[i].size_pfn; + if (!size) + continue; + base = range_state[i].base_pfn; + subtract_range(range, base, base + size - 1); + } + if (extra_remove_size) + subtract_range(range, extra_remove_base, + extra_remove_base + extra_remove_size - 1); + + /* get new range num */ + nr_range = 0; + for (i = 0; i < RANGE_NUM; i++) { + if (!range[i].end) + continue; + nr_range++; + } + if (debug_print) { + printk(KERN_DEBUG "After UC checking\n"); + for (i = 0; i < nr_range; i++) + printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", + range[i].start, range[i].end + 1); + } + + /* sort the ranges */ + sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); + if (debug_print) { + printk(KERN_DEBUG "After sorting\n"); + for (i = 0; i < nr_range; i++) + printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", + range[i].start, range[i].end + 1); + } + + /* clear those is not used */ + for (i = nr_range; i < RANGE_NUM; i++) + memset(&range[i], 0, sizeof(range[i])); + + return nr_range; +} + +static struct res_range __initdata range[RANGE_NUM]; +static int __initdata nr_range; + +#ifdef CONFIG_MTRR_SANITIZER + +static unsigned long __init sum_ranges(struct res_range *range, int nr_range) +{ + unsigned long sum; + int i; + + sum = 0; + for (i = 0; i < nr_range; i++) + sum += range[i].end + 1 - range[i].start; + + return sum; +} + +static int enable_mtrr_cleanup __initdata = + CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT; + +static int __init disable_mtrr_cleanup_setup(char *str) +{ + enable_mtrr_cleanup = 0; + return 0; +} +early_param("disable_mtrr_cleanup", disable_mtrr_cleanup_setup); + +static int __init enable_mtrr_cleanup_setup(char *str) +{ + enable_mtrr_cleanup = 1; + return 0; +} +early_param("enable_mtrr_cleanup", enable_mtrr_cleanup_setup); + +static int __init mtrr_cleanup_debug_setup(char *str) +{ + debug_print = 1; + return 0; +} +early_param("mtrr_cleanup_debug", mtrr_cleanup_debug_setup); + +struct var_mtrr_state { + unsigned long range_startk; + unsigned long range_sizek; + unsigned long chunk_sizek; + unsigned long gran_sizek; + unsigned int reg; +}; + +static void __init +set_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, + unsigned char type, unsigned int address_bits) +{ + u32 base_lo, base_hi, mask_lo, mask_hi; + u64 base, mask; + + if (!sizek) { + fill_mtrr_var_range(reg, 0, 0, 0, 0); + return; + } + + mask = (1ULL << address_bits) - 1; + mask &= ~((((u64)sizek) << 10) - 1); + + base = ((u64)basek) << 10; + + base |= type; + mask |= 0x800; + + base_lo = base & ((1ULL<<32) - 1); + base_hi = base >> 32; + + mask_lo = mask & ((1ULL<<32) - 1); + mask_hi = mask >> 32; + + fill_mtrr_var_range(reg, base_lo, base_hi, mask_lo, mask_hi); +} + +static void __init +save_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, + unsigned char type) +{ + range_state[reg].base_pfn = basek >> (PAGE_SHIFT - 10); + range_state[reg].size_pfn = sizek >> (PAGE_SHIFT - 10); + range_state[reg].type = type; +} + +static void __init +set_var_mtrr_all(unsigned int address_bits) +{ + unsigned long basek, sizek; + unsigned char type; + unsigned int reg; + + for (reg = 0; reg < num_var_ranges; reg++) { + basek = range_state[reg].base_pfn << (PAGE_SHIFT - 10); + sizek = range_state[reg].size_pfn << (PAGE_SHIFT - 10); + type = range_state[reg].type; + + set_var_mtrr(reg, basek, sizek, type, address_bits); + } +} + +static unsigned long to_size_factor(unsigned long sizek, char *factorp) +{ + char factor; + unsigned long base = sizek; + + if (base & ((1<<10) - 1)) { + /* not MB alignment */ + factor = 'K'; + } else if (base & ((1<<20) - 1)) { + factor = 'M'; + base >>= 10; + } else { + factor = 'G'; + base >>= 20; + } + + *factorp = factor; + + return base; +} + +static unsigned int __init +range_to_mtrr(unsigned int reg, unsigned long range_startk, + unsigned long range_sizek, unsigned char type) +{ + if (!range_sizek || (reg >= num_var_ranges)) + return reg; + + while (range_sizek) { + unsigned long max_align, align; + unsigned long sizek; + + /* Compute the maximum size I can make a range */ + if (range_startk) + max_align = ffs(range_startk) - 1; + else + max_align = 32; + align = fls(range_sizek) - 1; + if (align > max_align) + align = max_align; + + sizek = 1 << align; + if (debug_print) { + char start_factor = 'K', size_factor = 'K'; + unsigned long start_base, size_base; + + start_base = to_size_factor(range_startk, + &start_factor), + size_base = to_size_factor(sizek, &size_factor), + + printk(KERN_DEBUG "Setting variable MTRR %d, " + "base: %ld%cB, range: %ld%cB, type %s\n", + reg, start_base, start_factor, + size_base, size_factor, + (type == MTRR_TYPE_UNCACHABLE) ? "UC" : + ((type == MTRR_TYPE_WRBACK) ? "WB" : "Other") + ); + } + save_var_mtrr(reg++, range_startk, sizek, type); + range_startk += sizek; + range_sizek -= sizek; + if (reg >= num_var_ranges) + break; + } + return reg; +} + +static unsigned __init +range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek, + unsigned long sizek) +{ + unsigned long hole_basek, hole_sizek; + unsigned long second_basek, second_sizek; + unsigned long range0_basek, range0_sizek; + unsigned long range_basek, range_sizek; + unsigned long chunk_sizek; + unsigned long gran_sizek; + + hole_basek = 0; + hole_sizek = 0; + second_basek = 0; + second_sizek = 0; + chunk_sizek = state->chunk_sizek; + gran_sizek = state->gran_sizek; + + /* align with gran size, prevent small block used up MTRRs */ + range_basek = ALIGN(state->range_startk, gran_sizek); + if ((range_basek > basek) && basek) + return second_sizek; + state->range_sizek -= (range_basek - state->range_startk); + range_sizek = ALIGN(state->range_sizek, gran_sizek); + + while (range_sizek > state->range_sizek) { + range_sizek -= gran_sizek; + if (!range_sizek) + return 0; + } + state->range_sizek = range_sizek; + + /* try to append some small hole */ + range0_basek = state->range_startk; + range0_sizek = ALIGN(state->range_sizek, chunk_sizek); + + /* no increase */ + if (range0_sizek == state->range_sizek) { + if (debug_print) + printk(KERN_DEBUG "rangeX: %016lx - %016lx\n", + range0_basek<<10, + (range0_basek + state->range_sizek)<<10); + state->reg = range_to_mtrr(state->reg, range0_basek, + state->range_sizek, MTRR_TYPE_WRBACK); + return 0; + } + + /* only cut back, when it is not the last */ + if (sizek) { + while (range0_basek + range0_sizek > (basek + sizek)) { + if (range0_sizek >= chunk_sizek) + range0_sizek -= chunk_sizek; + else + range0_sizek = 0; + + if (!range0_sizek) + break; + } + } + +second_try: + range_basek = range0_basek + range0_sizek; + + /* one hole in the middle */ + if (range_basek > basek && range_basek <= (basek + sizek)) + second_sizek = range_basek - basek; + + if (range0_sizek > state->range_sizek) { + + /* one hole in middle or at end */ + hole_sizek = range0_sizek - state->range_sizek - second_sizek; + + /* hole size should be less than half of range0 size */ + if (hole_sizek >= (range0_sizek >> 1) && + range0_sizek >= chunk_sizek) { + range0_sizek -= chunk_sizek; + second_sizek = 0; + hole_sizek = 0; + + goto second_try; + } + } + + if (range0_sizek) { + if (debug_print) + printk(KERN_DEBUG "range0: %016lx - %016lx\n", + range0_basek<<10, + (range0_basek + range0_sizek)<<10); + state->reg = range_to_mtrr(state->reg, range0_basek, + range0_sizek, MTRR_TYPE_WRBACK); + } + + if (range0_sizek < state->range_sizek) { + /* need to handle left over */ + range_sizek = state->range_sizek - range0_sizek; + + if (debug_print) + printk(KERN_DEBUG "range: %016lx - %016lx\n", + range_basek<<10, + (range_basek + range_sizek)<<10); + state->reg = range_to_mtrr(state->reg, range_basek, + range_sizek, MTRR_TYPE_WRBACK); + } + + if (hole_sizek) { + hole_basek = range_basek - hole_sizek - second_sizek; + if (debug_print) + printk(KERN_DEBUG "hole: %016lx - %016lx\n", + hole_basek<<10, + (hole_basek + hole_sizek)<<10); + state->reg = range_to_mtrr(state->reg, hole_basek, + hole_sizek, MTRR_TYPE_UNCACHABLE); + } + + return second_sizek; +} + +static void __init +set_var_mtrr_range(struct var_mtrr_state *state, unsigned long base_pfn, + unsigned long size_pfn) +{ + unsigned long basek, sizek; + unsigned long second_sizek = 0; + + if (state->reg >= num_var_ranges) + return; + + basek = base_pfn << (PAGE_SHIFT - 10); + sizek = size_pfn << (PAGE_SHIFT - 10); + + /* See if I can merge with the last range */ + if ((basek <= 1024) || + (state->range_startk + state->range_sizek == basek)) { + unsigned long endk = basek + sizek; + state->range_sizek = endk - state->range_startk; + return; + } + /* Write the range mtrrs */ + if (state->range_sizek != 0) + second_sizek = range_to_mtrr_with_hole(state, basek, sizek); + + /* Allocate an msr */ + state->range_startk = basek + second_sizek; + state->range_sizek = sizek - second_sizek; +} + +/* mininum size of mtrr block that can take hole */ +static u64 mtrr_chunk_size __initdata = (256ULL<<20); + +static int __init parse_mtrr_chunk_size_opt(char *p) +{ + if (!p) + return -EINVAL; + mtrr_chunk_size = memparse(p, &p); + return 0; +} +early_param("mtrr_chunk_size", parse_mtrr_chunk_size_opt); + +/* granity of mtrr of block */ +static u64 mtrr_gran_size __initdata; + +static int __init parse_mtrr_gran_size_opt(char *p) +{ + if (!p) + return -EINVAL; + mtrr_gran_size = memparse(p, &p); + return 0; +} +early_param("mtrr_gran_size", parse_mtrr_gran_size_opt); + +static int nr_mtrr_spare_reg __initdata = + CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT; + +static int __init parse_mtrr_spare_reg(char *arg) +{ + if (arg) + nr_mtrr_spare_reg = simple_strtoul(arg, NULL, 0); + return 0; +} + +early_param("mtrr_spare_reg_nr", parse_mtrr_spare_reg); + +static int __init +x86_setup_var_mtrrs(struct res_range *range, int nr_range, + u64 chunk_size, u64 gran_size) +{ + struct var_mtrr_state var_state; + int i; + int num_reg; + + var_state.range_startk = 0; + var_state.range_sizek = 0; + var_state.reg = 0; + var_state.chunk_sizek = chunk_size >> 10; + var_state.gran_sizek = gran_size >> 10; + + memset(range_state, 0, sizeof(range_state)); + + /* Write the range etc */ + for (i = 0; i < nr_range; i++) + set_var_mtrr_range(&var_state, range[i].start, + range[i].end - range[i].start + 1); + + /* Write the last range */ + if (var_state.range_sizek != 0) + range_to_mtrr_with_hole(&var_state, 0, 0); + + num_reg = var_state.reg; + /* Clear out the extra MTRR's */ + while (var_state.reg < num_var_ranges) { + save_var_mtrr(var_state.reg, 0, 0, 0); + var_state.reg++; + } + + return num_reg; +} + +struct mtrr_cleanup_result { + unsigned long gran_sizek; + unsigned long chunk_sizek; + unsigned long lose_cover_sizek; + unsigned int num_reg; + int bad; +}; + +/* + * gran_size: 64K, 128K, 256K, 512K, 1M, 2M, ..., 2G + * chunk size: gran_size, ..., 2G + * so we need (1+16)*8 + */ +#define NUM_RESULT 136 +#define PSHIFT (PAGE_SHIFT - 10) + +static struct mtrr_cleanup_result __initdata result[NUM_RESULT]; +static unsigned long __initdata min_loss_pfn[RANGE_NUM]; + +static void __init print_out_mtrr_range_state(void) +{ + int i; + char start_factor = 'K', size_factor = 'K'; + unsigned long start_base, size_base; + mtrr_type type; + + for (i = 0; i < num_var_ranges; i++) { + + size_base = range_state[i].size_pfn << (PAGE_SHIFT - 10); + if (!size_base) + continue; + + size_base = to_size_factor(size_base, &size_factor), + start_base = range_state[i].base_pfn << (PAGE_SHIFT - 10); + start_base = to_size_factor(start_base, &start_factor), + type = range_state[i].type; + + printk(KERN_DEBUG "reg %d, base: %ld%cB, range: %ld%cB, type %s\n", + i, start_base, start_factor, + size_base, size_factor, + (type == MTRR_TYPE_UNCACHABLE) ? "UC" : + ((type == MTRR_TYPE_WRPROT) ? "WP" : + ((type == MTRR_TYPE_WRBACK) ? "WB" : "Other")) + ); + } +} + +static int __init mtrr_need_cleanup(void) +{ + int i; + mtrr_type type; + unsigned long size; + /* extra one for all 0 */ + int num[MTRR_NUM_TYPES + 1]; + + /* check entries number */ + memset(num, 0, sizeof(num)); + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + size = range_state[i].size_pfn; + if (type >= MTRR_NUM_TYPES) + continue; + if (!size) + type = MTRR_NUM_TYPES; + if (type == MTRR_TYPE_WRPROT) + type = MTRR_TYPE_UNCACHABLE; + num[type]++; + } + + /* check if we got UC entries */ + if (!num[MTRR_TYPE_UNCACHABLE]) + return 0; + + /* check if we only had WB and UC */ + if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != + num_var_ranges - num[MTRR_NUM_TYPES]) + return 0; + + return 1; +} + +static unsigned long __initdata range_sums; +static void __init mtrr_calc_range_state(u64 chunk_size, u64 gran_size, + unsigned long extra_remove_base, + unsigned long extra_remove_size, + int i) +{ + int num_reg; + static struct res_range range_new[RANGE_NUM]; + static int nr_range_new; + unsigned long range_sums_new; + + /* convert ranges to var ranges state */ + num_reg = x86_setup_var_mtrrs(range, nr_range, + chunk_size, gran_size); + + /* we got new setting in range_state, check it */ + memset(range_new, 0, sizeof(range_new)); + nr_range_new = x86_get_mtrr_mem_range(range_new, 0, + extra_remove_base, extra_remove_size); + range_sums_new = sum_ranges(range_new, nr_range_new); + + result[i].chunk_sizek = chunk_size >> 10; + result[i].gran_sizek = gran_size >> 10; + result[i].num_reg = num_reg; + if (range_sums < range_sums_new) { + result[i].lose_cover_sizek = + (range_sums_new - range_sums) << PSHIFT; + result[i].bad = 1; + } else + result[i].lose_cover_sizek = + (range_sums - range_sums_new) << PSHIFT; + + /* double check it */ + if (!result[i].bad && !result[i].lose_cover_sizek) { + if (nr_range_new != nr_range || + memcmp(range, range_new, sizeof(range))) + result[i].bad = 1; + } + + if (!result[i].bad && (range_sums - range_sums_new < + min_loss_pfn[num_reg])) { + min_loss_pfn[num_reg] = + range_sums - range_sums_new; + } +} + +static void __init mtrr_print_out_one_result(int i) +{ + char gran_factor, chunk_factor, lose_factor; + unsigned long gran_base, chunk_base, lose_base; + + gran_base = to_size_factor(result[i].gran_sizek, &gran_factor), + chunk_base = to_size_factor(result[i].chunk_sizek, &chunk_factor), + lose_base = to_size_factor(result[i].lose_cover_sizek, &lose_factor), + printk(KERN_INFO "%sgran_size: %ld%c \tchunk_size: %ld%c \t", + result[i].bad ? "*BAD*" : " ", + gran_base, gran_factor, chunk_base, chunk_factor); + printk(KERN_CONT "num_reg: %d \tlose cover RAM: %s%ld%c\n", + result[i].num_reg, result[i].bad ? "-" : "", + lose_base, lose_factor); +} + +static int __init mtrr_search_optimal_index(void) +{ + int i; + int num_reg_good; + int index_good; + + if (nr_mtrr_spare_reg >= num_var_ranges) + nr_mtrr_spare_reg = num_var_ranges - 1; + num_reg_good = -1; + for (i = num_var_ranges - nr_mtrr_spare_reg; i > 0; i--) { + if (!min_loss_pfn[i]) + num_reg_good = i; + } + + index_good = -1; + if (num_reg_good != -1) { + for (i = 0; i < NUM_RESULT; i++) { + if (!result[i].bad && + result[i].num_reg == num_reg_good && + !result[i].lose_cover_sizek) { + index_good = i; + break; + } + } + } + + return index_good; +} + + +int __init mtrr_cleanup(unsigned address_bits) +{ + unsigned long extra_remove_base, extra_remove_size; + unsigned long base, size, def, dummy; + mtrr_type type; + u64 chunk_size, gran_size; + int index_good; + int i; + + if (!is_cpu(INTEL) || enable_mtrr_cleanup < 1) + return 0; + rdmsr(MTRRdefType_MSR, def, dummy); + def &= 0xff; + if (def != MTRR_TYPE_UNCACHABLE) + return 0; + + /* get it and store it aside */ + memset(range_state, 0, sizeof(range_state)); + for (i = 0; i < num_var_ranges; i++) { + mtrr_if->get(i, &base, &size, &type); + range_state[i].base_pfn = base; + range_state[i].size_pfn = size; + range_state[i].type = type; + } + + /* check if we need handle it and can handle it */ + if (!mtrr_need_cleanup()) + return 0; + + /* print original var MTRRs at first, for debugging: */ + printk(KERN_DEBUG "original variable MTRRs\n"); + print_out_mtrr_range_state(); + + memset(range, 0, sizeof(range)); + extra_remove_size = 0; + extra_remove_base = 1 << (32 - PAGE_SHIFT); + if (mtrr_tom2) + extra_remove_size = + (mtrr_tom2 >> PAGE_SHIFT) - extra_remove_base; + nr_range = x86_get_mtrr_mem_range(range, 0, extra_remove_base, + extra_remove_size); + /* + * [0, 1M) should always be coverred by var mtrr with WB + * and fixed mtrrs should take effective before var mtrr for it + */ + nr_range = add_range_with_merge(range, nr_range, 0, + (1ULL<<(20 - PAGE_SHIFT)) - 1); + /* sort the ranges */ + sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); + + range_sums = sum_ranges(range, nr_range); + printk(KERN_INFO "total RAM coverred: %ldM\n", + range_sums >> (20 - PAGE_SHIFT)); + + if (mtrr_chunk_size && mtrr_gran_size) { + i = 0; + mtrr_calc_range_state(mtrr_chunk_size, mtrr_gran_size, + extra_remove_base, extra_remove_size, i); + + mtrr_print_out_one_result(i); + + if (!result[i].bad) { + set_var_mtrr_all(address_bits); + printk(KERN_DEBUG "New variable MTRRs\n"); + print_out_mtrr_range_state(); + return 1; + } + printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, " + "will find optimal one\n"); + } + + i = 0; + memset(min_loss_pfn, 0xff, sizeof(min_loss_pfn)); + memset(result, 0, sizeof(result)); + for (gran_size = (1ULL<<16); gran_size < (1ULL<<32); gran_size <<= 1) { + + for (chunk_size = gran_size; chunk_size < (1ULL<<32); + chunk_size <<= 1) { + + if (i >= NUM_RESULT) + continue; + + mtrr_calc_range_state(chunk_size, gran_size, + extra_remove_base, extra_remove_size, i); + if (debug_print) { + mtrr_print_out_one_result(i); + printk(KERN_INFO "\n"); + } + + i++; + } + } + + /* try to find the optimal index */ + index_good = mtrr_search_optimal_index(); + + if (index_good != -1) { + printk(KERN_INFO "Found optimal setting for mtrr clean up\n"); + i = index_good; + mtrr_print_out_one_result(i); + + /* convert ranges to var ranges state */ + chunk_size = result[i].chunk_sizek; + chunk_size <<= 10; + gran_size = result[i].gran_sizek; + gran_size <<= 10; + x86_setup_var_mtrrs(range, nr_range, chunk_size, gran_size); + set_var_mtrr_all(address_bits); + printk(KERN_DEBUG "New variable MTRRs\n"); + print_out_mtrr_range_state(); + return 1; + } else { + /* print out all */ + for (i = 0; i < NUM_RESULT; i++) + mtrr_print_out_one_result(i); + } + + printk(KERN_INFO "mtrr_cleanup: can not find optimal value\n"); + printk(KERN_INFO "please specify mtrr_gran_size/mtrr_chunk_size\n"); + + return 0; +} +#else +int __init mtrr_cleanup(unsigned address_bits) +{ + return 0; +} +#endif + +static int disable_mtrr_trim; + +static int __init disable_mtrr_trim_setup(char *str) +{ + disable_mtrr_trim = 1; + return 0; +} +early_param("disable_mtrr_trim", disable_mtrr_trim_setup); + +/* + * Newer AMD K8s and later CPUs have a special magic MSR way to force WB + * for memory >4GB. Check for that here. + * Note this won't check if the MTRRs < 4GB where the magic bit doesn't + * apply to are wrong, but so far we don't know of any such case in the wild. + */ +#define Tom2Enabled (1U << 21) +#define Tom2ForceMemTypeWB (1U << 22) + +int __init amd_special_default_mtrr(void) +{ + u32 l, h; + + if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) + return 0; + if (boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x11) + return 0; + /* In case some hypervisor doesn't pass SYSCFG through */ + if (rdmsr_safe(MSR_K8_SYSCFG, &l, &h) < 0) + return 0; + /* + * Memory between 4GB and top of mem is forced WB by this magic bit. + * Reserved before K8RevF, but should be zero there. + */ + if ((l & (Tom2Enabled | Tom2ForceMemTypeWB)) == + (Tom2Enabled | Tom2ForceMemTypeWB)) + return 1; + return 0; +} + +static u64 __init real_trim_memory(unsigned long start_pfn, + unsigned long limit_pfn) +{ + u64 trim_start, trim_size; + trim_start = start_pfn; + trim_start <<= PAGE_SHIFT; + trim_size = limit_pfn; + trim_size <<= PAGE_SHIFT; + trim_size -= trim_start; + + return e820_update_range(trim_start, trim_size, E820_RAM, + E820_RESERVED); +} +/** + * mtrr_trim_uncached_memory - trim RAM not covered by MTRRs + * @end_pfn: ending page frame number + * + * Some buggy BIOSes don't setup the MTRRs properly for systems with certain + * memory configurations. This routine checks that the highest MTRR matches + * the end of memory, to make sure the MTRRs having a write back type cover + * all of the memory the kernel is intending to use. If not, it'll trim any + * memory off the end by adjusting end_pfn, removing it from the kernel's + * allocation pools, warning the user with an obnoxious message. + */ +int __init mtrr_trim_uncached_memory(unsigned long end_pfn) +{ + unsigned long i, base, size, highest_pfn = 0, def, dummy; + mtrr_type type; + u64 total_trim_size; + + /* extra one for all 0 */ + int num[MTRR_NUM_TYPES + 1]; + /* + * Make sure we only trim uncachable memory on machines that + * support the Intel MTRR architecture: + */ + if (!is_cpu(INTEL) || disable_mtrr_trim) + return 0; + rdmsr(MTRRdefType_MSR, def, dummy); + def &= 0xff; + if (def != MTRR_TYPE_UNCACHABLE) + return 0; + + /* get it and store it aside */ + memset(range_state, 0, sizeof(range_state)); + for (i = 0; i < num_var_ranges; i++) { + mtrr_if->get(i, &base, &size, &type); + range_state[i].base_pfn = base; + range_state[i].size_pfn = size; + range_state[i].type = type; + } + + /* Find highest cached pfn */ + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type != MTRR_TYPE_WRBACK) + continue; + base = range_state[i].base_pfn; + size = range_state[i].size_pfn; + if (highest_pfn < base + size) + highest_pfn = base + size; + } + + /* kvm/qemu doesn't have mtrr set right, don't trim them all */ + if (!highest_pfn) { + printk(KERN_INFO "CPU MTRRs all blank - virtualized system.\n"); + return 0; + } + + /* check entries number */ + memset(num, 0, sizeof(num)); + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type >= MTRR_NUM_TYPES) + continue; + size = range_state[i].size_pfn; + if (!size) + type = MTRR_NUM_TYPES; + num[type]++; + } + + /* no entry for WB? */ + if (!num[MTRR_TYPE_WRBACK]) + return 0; + + /* check if we only had WB and UC */ + if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != + num_var_ranges - num[MTRR_NUM_TYPES]) + return 0; + + memset(range, 0, sizeof(range)); + nr_range = 0; + if (mtrr_tom2) { + range[nr_range].start = (1ULL<<(32 - PAGE_SHIFT)); + range[nr_range].end = (mtrr_tom2 >> PAGE_SHIFT) - 1; + if (highest_pfn < range[nr_range].end + 1) + highest_pfn = range[nr_range].end + 1; + nr_range++; + } + nr_range = x86_get_mtrr_mem_range(range, nr_range, 0, 0); + + total_trim_size = 0; + /* check the head */ + if (range[0].start) + total_trim_size += real_trim_memory(0, range[0].start); + /* check the holes */ + for (i = 0; i < nr_range - 1; i++) { + if (range[i].end + 1 < range[i+1].start) + total_trim_size += real_trim_memory(range[i].end + 1, + range[i+1].start); + } + /* check the top */ + i = nr_range - 1; + if (range[i].end + 1 < end_pfn) + total_trim_size += real_trim_memory(range[i].end + 1, + end_pfn); + + if (total_trim_size) { + printk(KERN_WARNING "WARNING: BIOS bug: CPU MTRRs don't cover" + " all of memory, losing %lluMB of RAM.\n", + total_trim_size >> 20); + + if (!changed_by_mtrr_cleanup) + WARN_ON(1); + + printk(KERN_INFO "update e820 for mtrr\n"); + update_e820(); + + return 1; + } + + return 0; +} + diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c index 311a473..5c2e266 100644 --- a/arch/x86/kernel/cpu/mtrr/main.c +++ b/arch/x86/kernel/cpu/mtrr/main.c @@ -610,1060 +610,7 @@ static struct sysdev_driver mtrr_sysdev_driver = { .resume = mtrr_restore, }; -/* should be related to MTRR_VAR_RANGES nums */ -#define RANGE_NUM 256 - -struct res_range { - unsigned long start; - unsigned long end; -}; - -static int __init -add_range(struct res_range *range, int nr_range, unsigned long start, - unsigned long end) -{ - /* out of slots */ - if (nr_range >= RANGE_NUM) - return nr_range; - - range[nr_range].start = start; - range[nr_range].end = end; - - nr_range++; - - return nr_range; -} - -static int __init -add_range_with_merge(struct res_range *range, int nr_range, unsigned long start, - unsigned long end) -{ - int i; - - /* try to merge it with old one */ - for (i = 0; i < nr_range; i++) { - unsigned long final_start, final_end; - unsigned long common_start, common_end; - - if (!range[i].end) - continue; - - common_start = max(range[i].start, start); - common_end = min(range[i].end, end); - if (common_start > common_end + 1) - continue; - - final_start = min(range[i].start, start); - final_end = max(range[i].end, end); - - range[i].start = final_start; - range[i].end = final_end; - return nr_range; - } - - /* need to add that */ - return add_range(range, nr_range, start, end); -} - -static void __init -subtract_range(struct res_range *range, unsigned long start, unsigned long end) -{ - int i, j; - - for (j = 0; j < RANGE_NUM; j++) { - if (!range[j].end) - continue; - - if (start <= range[j].start && end >= range[j].end) { - range[j].start = 0; - range[j].end = 0; - continue; - } - - if (start <= range[j].start && end < range[j].end && - range[j].start < end + 1) { - range[j].start = end + 1; - continue; - } - - - if (start > range[j].start && end >= range[j].end && - range[j].end > start - 1) { - range[j].end = start - 1; - continue; - } - - if (start > range[j].start && end < range[j].end) { - /* find the new spare */ - for (i = 0; i < RANGE_NUM; i++) { - if (range[i].end == 0) - break; - } - if (i < RANGE_NUM) { - range[i].end = range[j].end; - range[i].start = end + 1; - } else { - printk(KERN_ERR "run of slot in ranges\n"); - } - range[j].end = start - 1; - continue; - } - } -} - -static int __init cmp_range(const void *x1, const void *x2) -{ - const struct res_range *r1 = x1; - const struct res_range *r2 = x2; - long start1, start2; - - start1 = r1->start; - start2 = r2->start; - - return start1 - start2; -} - -struct var_mtrr_range_state { - unsigned long base_pfn; - unsigned long size_pfn; - mtrr_type type; -}; - -static struct var_mtrr_range_state __initdata range_state[RANGE_NUM]; -static int __initdata debug_print; - -static int __init -x86_get_mtrr_mem_range(struct res_range *range, int nr_range, - unsigned long extra_remove_base, - unsigned long extra_remove_size) -{ - unsigned long i, base, size; - mtrr_type type; - - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type != MTRR_TYPE_WRBACK) - continue; - base = range_state[i].base_pfn; - size = range_state[i].size_pfn; - nr_range = add_range_with_merge(range, nr_range, base, - base + size - 1); - } - if (debug_print) { - printk(KERN_DEBUG "After WB checking\n"); - for (i = 0; i < nr_range; i++) - printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", - range[i].start, range[i].end + 1); - } - - /* take out UC ranges */ - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type != MTRR_TYPE_UNCACHABLE && - type != MTRR_TYPE_WRPROT) - continue; - size = range_state[i].size_pfn; - if (!size) - continue; - base = range_state[i].base_pfn; - subtract_range(range, base, base + size - 1); - } - if (extra_remove_size) - subtract_range(range, extra_remove_base, - extra_remove_base + extra_remove_size - 1); - - /* get new range num */ - nr_range = 0; - for (i = 0; i < RANGE_NUM; i++) { - if (!range[i].end) - continue; - nr_range++; - } - if (debug_print) { - printk(KERN_DEBUG "After UC checking\n"); - for (i = 0; i < nr_range; i++) - printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", - range[i].start, range[i].end + 1); - } - - /* sort the ranges */ - sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); - if (debug_print) { - printk(KERN_DEBUG "After sorting\n"); - for (i = 0; i < nr_range; i++) - printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", - range[i].start, range[i].end + 1); - } - - /* clear those is not used */ - for (i = nr_range; i < RANGE_NUM; i++) - memset(&range[i], 0, sizeof(range[i])); - - return nr_range; -} - -static struct res_range __initdata range[RANGE_NUM]; -static int __initdata nr_range; - -#ifdef CONFIG_MTRR_SANITIZER - -static unsigned long __init sum_ranges(struct res_range *range, int nr_range) -{ - unsigned long sum; - int i; - - sum = 0; - for (i = 0; i < nr_range; i++) - sum += range[i].end + 1 - range[i].start; - - return sum; -} - -static int enable_mtrr_cleanup __initdata = - CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT; - -static int __init disable_mtrr_cleanup_setup(char *str) -{ - enable_mtrr_cleanup = 0; - return 0; -} -early_param("disable_mtrr_cleanup", disable_mtrr_cleanup_setup); - -static int __init enable_mtrr_cleanup_setup(char *str) -{ - enable_mtrr_cleanup = 1; - return 0; -} -early_param("enable_mtrr_cleanup", enable_mtrr_cleanup_setup); - -static int __init mtrr_cleanup_debug_setup(char *str) -{ - debug_print = 1; - return 0; -} -early_param("mtrr_cleanup_debug", mtrr_cleanup_debug_setup); - -struct var_mtrr_state { - unsigned long range_startk; - unsigned long range_sizek; - unsigned long chunk_sizek; - unsigned long gran_sizek; - unsigned int reg; -}; - -static void __init -set_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, - unsigned char type, unsigned int address_bits) -{ - u32 base_lo, base_hi, mask_lo, mask_hi; - u64 base, mask; - - if (!sizek) { - fill_mtrr_var_range(reg, 0, 0, 0, 0); - return; - } - - mask = (1ULL << address_bits) - 1; - mask &= ~((((u64)sizek) << 10) - 1); - - base = ((u64)basek) << 10; - - base |= type; - mask |= 0x800; - - base_lo = base & ((1ULL<<32) - 1); - base_hi = base >> 32; - - mask_lo = mask & ((1ULL<<32) - 1); - mask_hi = mask >> 32; - - fill_mtrr_var_range(reg, base_lo, base_hi, mask_lo, mask_hi); -} - -static void __init -save_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, - unsigned char type) -{ - range_state[reg].base_pfn = basek >> (PAGE_SHIFT - 10); - range_state[reg].size_pfn = sizek >> (PAGE_SHIFT - 10); - range_state[reg].type = type; -} - -static void __init -set_var_mtrr_all(unsigned int address_bits) -{ - unsigned long basek, sizek; - unsigned char type; - unsigned int reg; - - for (reg = 0; reg < num_var_ranges; reg++) { - basek = range_state[reg].base_pfn << (PAGE_SHIFT - 10); - sizek = range_state[reg].size_pfn << (PAGE_SHIFT - 10); - type = range_state[reg].type; - - set_var_mtrr(reg, basek, sizek, type, address_bits); - } -} - -static unsigned long to_size_factor(unsigned long sizek, char *factorp) -{ - char factor; - unsigned long base = sizek; - - if (base & ((1<<10) - 1)) { - /* not MB alignment */ - factor = 'K'; - } else if (base & ((1<<20) - 1)){ - factor = 'M'; - base >>= 10; - } else { - factor = 'G'; - base >>= 20; - } - - *factorp = factor; - - return base; -} - -static unsigned int __init -range_to_mtrr(unsigned int reg, unsigned long range_startk, - unsigned long range_sizek, unsigned char type) -{ - if (!range_sizek || (reg >= num_var_ranges)) - return reg; - - while (range_sizek) { - unsigned long max_align, align; - unsigned long sizek; - - /* Compute the maximum size I can make a range */ - if (range_startk) - max_align = ffs(range_startk) - 1; - else - max_align = 32; - align = fls(range_sizek) - 1; - if (align > max_align) - align = max_align; - - sizek = 1 << align; - if (debug_print) { - char start_factor = 'K', size_factor = 'K'; - unsigned long start_base, size_base; - - start_base = to_size_factor(range_startk, &start_factor), - size_base = to_size_factor(sizek, &size_factor), - - printk(KERN_DEBUG "Setting variable MTRR %d, " - "base: %ld%cB, range: %ld%cB, type %s\n", - reg, start_base, start_factor, - size_base, size_factor, - (type == MTRR_TYPE_UNCACHABLE)?"UC": - ((type == MTRR_TYPE_WRBACK)?"WB":"Other") - ); - } - save_var_mtrr(reg++, range_startk, sizek, type); - range_startk += sizek; - range_sizek -= sizek; - if (reg >= num_var_ranges) - break; - } - return reg; -} - -static unsigned __init -range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek, - unsigned long sizek) -{ - unsigned long hole_basek, hole_sizek; - unsigned long second_basek, second_sizek; - unsigned long range0_basek, range0_sizek; - unsigned long range_basek, range_sizek; - unsigned long chunk_sizek; - unsigned long gran_sizek; - - hole_basek = 0; - hole_sizek = 0; - second_basek = 0; - second_sizek = 0; - chunk_sizek = state->chunk_sizek; - gran_sizek = state->gran_sizek; - - /* align with gran size, prevent small block used up MTRRs */ - range_basek = ALIGN(state->range_startk, gran_sizek); - if ((range_basek > basek) && basek) - return second_sizek; - state->range_sizek -= (range_basek - state->range_startk); - range_sizek = ALIGN(state->range_sizek, gran_sizek); - - while (range_sizek > state->range_sizek) { - range_sizek -= gran_sizek; - if (!range_sizek) - return 0; - } - state->range_sizek = range_sizek; - - /* try to append some small hole */ - range0_basek = state->range_startk; - range0_sizek = ALIGN(state->range_sizek, chunk_sizek); - - /* no increase */ - if (range0_sizek == state->range_sizek) { - if (debug_print) - printk(KERN_DEBUG "rangeX: %016lx - %016lx\n", - range0_basek<<10, - (range0_basek + state->range_sizek)<<10); - state->reg = range_to_mtrr(state->reg, range0_basek, - state->range_sizek, MTRR_TYPE_WRBACK); - return 0; - } - - /* only cut back, when it is not the last */ - if (sizek) { - while (range0_basek + range0_sizek > (basek + sizek)) { - if (range0_sizek >= chunk_sizek) - range0_sizek -= chunk_sizek; - else - range0_sizek = 0; - - if (!range0_sizek) - break; - } - } - -second_try: - range_basek = range0_basek + range0_sizek; - - /* one hole in the middle */ - if (range_basek > basek && range_basek <= (basek + sizek)) - second_sizek = range_basek - basek; - - if (range0_sizek > state->range_sizek) { - - /* one hole in middle or at end */ - hole_sizek = range0_sizek - state->range_sizek - second_sizek; - - /* hole size should be less than half of range0 size */ - if (hole_sizek >= (range0_sizek >> 1) && - range0_sizek >= chunk_sizek) { - range0_sizek -= chunk_sizek; - second_sizek = 0; - hole_sizek = 0; - - goto second_try; - } - } - - if (range0_sizek) { - if (debug_print) - printk(KERN_DEBUG "range0: %016lx - %016lx\n", - range0_basek<<10, - (range0_basek + range0_sizek)<<10); - state->reg = range_to_mtrr(state->reg, range0_basek, - range0_sizek, MTRR_TYPE_WRBACK); - } - - if (range0_sizek < state->range_sizek) { - /* need to handle left over */ - range_sizek = state->range_sizek - range0_sizek; - - if (debug_print) - printk(KERN_DEBUG "range: %016lx - %016lx\n", - range_basek<<10, - (range_basek + range_sizek)<<10); - state->reg = range_to_mtrr(state->reg, range_basek, - range_sizek, MTRR_TYPE_WRBACK); - } - - if (hole_sizek) { - hole_basek = range_basek - hole_sizek - second_sizek; - if (debug_print) - printk(KERN_DEBUG "hole: %016lx - %016lx\n", - hole_basek<<10, - (hole_basek + hole_sizek)<<10); - state->reg = range_to_mtrr(state->reg, hole_basek, - hole_sizek, MTRR_TYPE_UNCACHABLE); - } - - return second_sizek; -} - -static void __init -set_var_mtrr_range(struct var_mtrr_state *state, unsigned long base_pfn, - unsigned long size_pfn) -{ - unsigned long basek, sizek; - unsigned long second_sizek = 0; - - if (state->reg >= num_var_ranges) - return; - - basek = base_pfn << (PAGE_SHIFT - 10); - sizek = size_pfn << (PAGE_SHIFT - 10); - - /* See if I can merge with the last range */ - if ((basek <= 1024) || - (state->range_startk + state->range_sizek == basek)) { - unsigned long endk = basek + sizek; - state->range_sizek = endk - state->range_startk; - return; - } - /* Write the range mtrrs */ - if (state->range_sizek != 0) - second_sizek = range_to_mtrr_with_hole(state, basek, sizek); - - /* Allocate an msr */ - state->range_startk = basek + second_sizek; - state->range_sizek = sizek - second_sizek; -} - -/* mininum size of mtrr block that can take hole */ -static u64 mtrr_chunk_size __initdata = (256ULL<<20); - -static int __init parse_mtrr_chunk_size_opt(char *p) -{ - if (!p) - return -EINVAL; - mtrr_chunk_size = memparse(p, &p); - return 0; -} -early_param("mtrr_chunk_size", parse_mtrr_chunk_size_opt); - -/* granity of mtrr of block */ -static u64 mtrr_gran_size __initdata; - -static int __init parse_mtrr_gran_size_opt(char *p) -{ - if (!p) - return -EINVAL; - mtrr_gran_size = memparse(p, &p); - return 0; -} -early_param("mtrr_gran_size", parse_mtrr_gran_size_opt); - -static int nr_mtrr_spare_reg __initdata = - CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT; - -static int __init parse_mtrr_spare_reg(char *arg) -{ - if (arg) - nr_mtrr_spare_reg = simple_strtoul(arg, NULL, 0); - return 0; -} - -early_param("mtrr_spare_reg_nr", parse_mtrr_spare_reg); - -static int __init -x86_setup_var_mtrrs(struct res_range *range, int nr_range, - u64 chunk_size, u64 gran_size) -{ - struct var_mtrr_state var_state; - int i; - int num_reg; - - var_state.range_startk = 0; - var_state.range_sizek = 0; - var_state.reg = 0; - var_state.chunk_sizek = chunk_size >> 10; - var_state.gran_sizek = gran_size >> 10; - - memset(range_state, 0, sizeof(range_state)); - - /* Write the range etc */ - for (i = 0; i < nr_range; i++) - set_var_mtrr_range(&var_state, range[i].start, - range[i].end - range[i].start + 1); - - /* Write the last range */ - if (var_state.range_sizek != 0) - range_to_mtrr_with_hole(&var_state, 0, 0); - - num_reg = var_state.reg; - /* Clear out the extra MTRR's */ - while (var_state.reg < num_var_ranges) { - save_var_mtrr(var_state.reg, 0, 0, 0); - var_state.reg++; - } - - return num_reg; -} - -struct mtrr_cleanup_result { - unsigned long gran_sizek; - unsigned long chunk_sizek; - unsigned long lose_cover_sizek; - unsigned int num_reg; - int bad; -}; - -/* - * gran_size: 64K, 128K, 256K, 512K, 1M, 2M, ..., 2G - * chunk size: gran_size, ..., 2G - * so we need (1+16)*8 - */ -#define NUM_RESULT 136 -#define PSHIFT (PAGE_SHIFT - 10) - -static struct mtrr_cleanup_result __initdata result[NUM_RESULT]; -static unsigned long __initdata min_loss_pfn[RANGE_NUM]; - -static void __init print_out_mtrr_range_state(void) -{ - int i; - char start_factor = 'K', size_factor = 'K'; - unsigned long start_base, size_base; - mtrr_type type; - - for (i = 0; i < num_var_ranges; i++) { - - size_base = range_state[i].size_pfn << (PAGE_SHIFT - 10); - if (!size_base) - continue; - - size_base = to_size_factor(size_base, &size_factor), - start_base = range_state[i].base_pfn << (PAGE_SHIFT - 10); - start_base = to_size_factor(start_base, &start_factor), - type = range_state[i].type; - - printk(KERN_DEBUG "reg %d, base: %ld%cB, range: %ld%cB, type %s\n", - i, start_base, start_factor, - size_base, size_factor, - (type == MTRR_TYPE_UNCACHABLE) ? "UC" : - ((type == MTRR_TYPE_WRPROT) ? "WP" : - ((type == MTRR_TYPE_WRBACK) ? "WB" : "Other")) - ); - } -} - -static int __init mtrr_need_cleanup(void) -{ - int i; - mtrr_type type; - unsigned long size; - /* extra one for all 0 */ - int num[MTRR_NUM_TYPES + 1]; - - /* check entries number */ - memset(num, 0, sizeof(num)); - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - size = range_state[i].size_pfn; - if (type >= MTRR_NUM_TYPES) - continue; - if (!size) - type = MTRR_NUM_TYPES; - if (type == MTRR_TYPE_WRPROT) - type = MTRR_TYPE_UNCACHABLE; - num[type]++; - } - - /* check if we got UC entries */ - if (!num[MTRR_TYPE_UNCACHABLE]) - return 0; - - /* check if we only had WB and UC */ - if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != - num_var_ranges - num[MTRR_NUM_TYPES]) - return 0; - - return 1; -} - -static unsigned long __initdata range_sums; -static void __init mtrr_calc_range_state(u64 chunk_size, u64 gran_size, - unsigned long extra_remove_base, - unsigned long extra_remove_size, - int i) -{ - int num_reg; - static struct res_range range_new[RANGE_NUM]; - static int nr_range_new; - unsigned long range_sums_new; - - /* convert ranges to var ranges state */ - num_reg = x86_setup_var_mtrrs(range, nr_range, - chunk_size, gran_size); - - /* we got new setting in range_state, check it */ - memset(range_new, 0, sizeof(range_new)); - nr_range_new = x86_get_mtrr_mem_range(range_new, 0, - extra_remove_base, extra_remove_size); - range_sums_new = sum_ranges(range_new, nr_range_new); - - result[i].chunk_sizek = chunk_size >> 10; - result[i].gran_sizek = gran_size >> 10; - result[i].num_reg = num_reg; - if (range_sums < range_sums_new) { - result[i].lose_cover_sizek = - (range_sums_new - range_sums) << PSHIFT; - result[i].bad = 1; - } else - result[i].lose_cover_sizek = - (range_sums - range_sums_new) << PSHIFT; - - /* double check it */ - if (!result[i].bad && !result[i].lose_cover_sizek) { - if (nr_range_new != nr_range || - memcmp(range, range_new, sizeof(range))) - result[i].bad = 1; - } - - if (!result[i].bad && (range_sums - range_sums_new < - min_loss_pfn[num_reg])) { - min_loss_pfn[num_reg] = - range_sums - range_sums_new; - } -} - -static void __init mtrr_print_out_one_result(int i) -{ - char gran_factor, chunk_factor, lose_factor; - unsigned long gran_base, chunk_base, lose_base; - - gran_base = to_size_factor(result[i].gran_sizek, &gran_factor), - chunk_base = to_size_factor(result[i].chunk_sizek, &chunk_factor), - lose_base = to_size_factor(result[i].lose_cover_sizek, &lose_factor), - printk(KERN_INFO "%sgran_size: %ld%c \tchunk_size: %ld%c \t", - result[i].bad ? "*BAD*" : " ", - gran_base, gran_factor, chunk_base, chunk_factor); - printk(KERN_CONT "num_reg: %d \tlose cover RAM: %s%ld%c\n", - result[i].num_reg, result[i].bad ? "-" : "", - lose_base, lose_factor); -} - -static int __init mtrr_search_optimal_index(void) -{ - int i; - int num_reg_good; - int index_good; - - if (nr_mtrr_spare_reg >= num_var_ranges) - nr_mtrr_spare_reg = num_var_ranges - 1; - num_reg_good = -1; - for (i = num_var_ranges - nr_mtrr_spare_reg; i > 0; i--) { - if (!min_loss_pfn[i]) - num_reg_good = i; - } - - index_good = -1; - if (num_reg_good != -1) { - for (i = 0; i < NUM_RESULT; i++) { - if (!result[i].bad && - result[i].num_reg == num_reg_good && - !result[i].lose_cover_sizek) { - index_good = i; - break; - } - } - } - - return index_good; -} - - -static int __init mtrr_cleanup(unsigned address_bits) -{ - unsigned long extra_remove_base, extra_remove_size; - unsigned long base, size, def, dummy; - mtrr_type type; - u64 chunk_size, gran_size; - int index_good; - int i; - - if (!is_cpu(INTEL) || enable_mtrr_cleanup < 1) - return 0; - rdmsr(MTRRdefType_MSR, def, dummy); - def &= 0xff; - if (def != MTRR_TYPE_UNCACHABLE) - return 0; - - /* get it and store it aside */ - memset(range_state, 0, sizeof(range_state)); - for (i = 0; i < num_var_ranges; i++) { - mtrr_if->get(i, &base, &size, &type); - range_state[i].base_pfn = base; - range_state[i].size_pfn = size; - range_state[i].type = type; - } - - /* check if we need handle it and can handle it */ - if (!mtrr_need_cleanup()) - return 0; - - /* print original var MTRRs at first, for debugging: */ - printk(KERN_DEBUG "original variable MTRRs\n"); - print_out_mtrr_range_state(); - - memset(range, 0, sizeof(range)); - extra_remove_size = 0; - extra_remove_base = 1 << (32 - PAGE_SHIFT); - if (mtrr_tom2) - extra_remove_size = - (mtrr_tom2 >> PAGE_SHIFT) - extra_remove_base; - nr_range = x86_get_mtrr_mem_range(range, 0, extra_remove_base, - extra_remove_size); - /* - * [0, 1M) should always be coverred by var mtrr with WB - * and fixed mtrrs should take effective before var mtrr for it - */ - nr_range = add_range_with_merge(range, nr_range, 0, - (1ULL<<(20 - PAGE_SHIFT)) - 1); - /* sort the ranges */ - sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); - - range_sums = sum_ranges(range, nr_range); - printk(KERN_INFO "total RAM coverred: %ldM\n", - range_sums >> (20 - PAGE_SHIFT)); - - if (mtrr_chunk_size && mtrr_gran_size) { - i = 0; - mtrr_calc_range_state(mtrr_chunk_size, mtrr_gran_size, - extra_remove_base, extra_remove_size, i); - - mtrr_print_out_one_result(i); - - if (!result[i].bad) { - set_var_mtrr_all(address_bits); - printk(KERN_DEBUG "New variable MTRRs\n"); - print_out_mtrr_range_state(); - return 1; - } - printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, " - "will find optimal one\n"); - } - - i = 0; - memset(min_loss_pfn, 0xff, sizeof(min_loss_pfn)); - memset(result, 0, sizeof(result)); - for (gran_size = (1ULL<<16); gran_size < (1ULL<<32); gran_size <<= 1) { - - for (chunk_size = gran_size; chunk_size < (1ULL<<32); - chunk_size <<= 1) { - - if (i >= NUM_RESULT) - continue; - - mtrr_calc_range_state(chunk_size, gran_size, - extra_remove_base, extra_remove_size, i); - if (debug_print) { - mtrr_print_out_one_result(i); - printk(KERN_INFO "\n"); - } - - i++; - } - } - - /* try to find the optimal index */ - index_good = mtrr_search_optimal_index(); - - if (index_good != -1) { - printk(KERN_INFO "Found optimal setting for mtrr clean up\n"); - i = index_good; - mtrr_print_out_one_result(i); - - /* convert ranges to var ranges state */ - chunk_size = result[i].chunk_sizek; - chunk_size <<= 10; - gran_size = result[i].gran_sizek; - gran_size <<= 10; - x86_setup_var_mtrrs(range, nr_range, chunk_size, gran_size); - set_var_mtrr_all(address_bits); - printk(KERN_DEBUG "New variable MTRRs\n"); - print_out_mtrr_range_state(); - return 1; - } else { - /* print out all */ - for (i = 0; i < NUM_RESULT; i++) - mtrr_print_out_one_result(i); - } - - printk(KERN_INFO "mtrr_cleanup: can not find optimal value\n"); - printk(KERN_INFO "please specify mtrr_gran_size/mtrr_chunk_size\n"); - - return 0; -} -#else -static int __init mtrr_cleanup(unsigned address_bits) -{ - return 0; -} -#endif - -static int __initdata changed_by_mtrr_cleanup; - -static int disable_mtrr_trim; - -static int __init disable_mtrr_trim_setup(char *str) -{ - disable_mtrr_trim = 1; - return 0; -} -early_param("disable_mtrr_trim", disable_mtrr_trim_setup); - -/* - * Newer AMD K8s and later CPUs have a special magic MSR way to force WB - * for memory >4GB. Check for that here. - * Note this won't check if the MTRRs < 4GB where the magic bit doesn't - * apply to are wrong, but so far we don't know of any such case in the wild. - */ -#define Tom2Enabled (1U << 21) -#define Tom2ForceMemTypeWB (1U << 22) - -int __init amd_special_default_mtrr(void) -{ - u32 l, h; - - if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) - return 0; - if (boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x11) - return 0; - /* In case some hypervisor doesn't pass SYSCFG through */ - if (rdmsr_safe(MSR_K8_SYSCFG, &l, &h) < 0) - return 0; - /* - * Memory between 4GB and top of mem is forced WB by this magic bit. - * Reserved before K8RevF, but should be zero there. - */ - if ((l & (Tom2Enabled | Tom2ForceMemTypeWB)) == - (Tom2Enabled | Tom2ForceMemTypeWB)) - return 1; - return 0; -} - -static u64 __init real_trim_memory(unsigned long start_pfn, - unsigned long limit_pfn) -{ - u64 trim_start, trim_size; - trim_start = start_pfn; - trim_start <<= PAGE_SHIFT; - trim_size = limit_pfn; - trim_size <<= PAGE_SHIFT; - trim_size -= trim_start; - - return e820_update_range(trim_start, trim_size, E820_RAM, - E820_RESERVED); -} -/** - * mtrr_trim_uncached_memory - trim RAM not covered by MTRRs - * @end_pfn: ending page frame number - * - * Some buggy BIOSes don't setup the MTRRs properly for systems with certain - * memory configurations. This routine checks that the highest MTRR matches - * the end of memory, to make sure the MTRRs having a write back type cover - * all of the memory the kernel is intending to use. If not, it'll trim any - * memory off the end by adjusting end_pfn, removing it from the kernel's - * allocation pools, warning the user with an obnoxious message. - */ -int __init mtrr_trim_uncached_memory(unsigned long end_pfn) -{ - unsigned long i, base, size, highest_pfn = 0, def, dummy; - mtrr_type type; - u64 total_trim_size; - - /* extra one for all 0 */ - int num[MTRR_NUM_TYPES + 1]; - /* - * Make sure we only trim uncachable memory on machines that - * support the Intel MTRR architecture: - */ - if (!is_cpu(INTEL) || disable_mtrr_trim) - return 0; - rdmsr(MTRRdefType_MSR, def, dummy); - def &= 0xff; - if (def != MTRR_TYPE_UNCACHABLE) - return 0; - - /* get it and store it aside */ - memset(range_state, 0, sizeof(range_state)); - for (i = 0; i < num_var_ranges; i++) { - mtrr_if->get(i, &base, &size, &type); - range_state[i].base_pfn = base; - range_state[i].size_pfn = size; - range_state[i].type = type; - } - - /* Find highest cached pfn */ - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type != MTRR_TYPE_WRBACK) - continue; - base = range_state[i].base_pfn; - size = range_state[i].size_pfn; - if (highest_pfn < base + size) - highest_pfn = base + size; - } - - /* kvm/qemu doesn't have mtrr set right, don't trim them all */ - if (!highest_pfn) { - printk(KERN_INFO "CPU MTRRs all blank - virtualized system.\n"); - return 0; - } - - /* check entries number */ - memset(num, 0, sizeof(num)); - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type >= MTRR_NUM_TYPES) - continue; - size = range_state[i].size_pfn; - if (!size) - type = MTRR_NUM_TYPES; - num[type]++; - } - - /* no entry for WB? */ - if (!num[MTRR_TYPE_WRBACK]) - return 0; - - /* check if we only had WB and UC */ - if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != - num_var_ranges - num[MTRR_NUM_TYPES]) - return 0; - - memset(range, 0, sizeof(range)); - nr_range = 0; - if (mtrr_tom2) { - range[nr_range].start = (1ULL<<(32 - PAGE_SHIFT)); - range[nr_range].end = (mtrr_tom2 >> PAGE_SHIFT) - 1; - if (highest_pfn < range[nr_range].end + 1) - highest_pfn = range[nr_range].end + 1; - nr_range++; - } - nr_range = x86_get_mtrr_mem_range(range, nr_range, 0, 0); - - total_trim_size = 0; - /* check the head */ - if (range[0].start) - total_trim_size += real_trim_memory(0, range[0].start); - /* check the holes */ - for (i = 0; i < nr_range - 1; i++) { - if (range[i].end + 1 < range[i+1].start) - total_trim_size += real_trim_memory(range[i].end + 1, - range[i+1].start); - } - /* check the top */ - i = nr_range - 1; - if (range[i].end + 1 < end_pfn) - total_trim_size += real_trim_memory(range[i].end + 1, - end_pfn); - - if (total_trim_size) { - printk(KERN_WARNING "WARNING: BIOS bug: CPU MTRRs don't cover" - " all of memory, losing %lluMB of RAM.\n", - total_trim_size >> 20); - - if (!changed_by_mtrr_cleanup) - WARN_ON(1); - - printk(KERN_INFO "update e820 for mtrr\n"); - update_e820(); - - return 1; - } - - return 0; -} +int __initdata changed_by_mtrr_cleanup; /** * mtrr_bp_init - initialize mtrrs on the boot CPU diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.h b/arch/x86/kernel/cpu/mtrr/mtrr.h index ffd6040..6710e93 100644 --- a/arch/x86/kernel/cpu/mtrr/mtrr.h +++ b/arch/x86/kernel/cpu/mtrr/mtrr.h @@ -88,3 +88,6 @@ void mtrr_wrmsr(unsigned, unsigned, unsigned); int amd_init_mtrr(void); int cyrix_init_mtrr(void); int centaur_init_mtrr(void); + +extern int changed_by_mtrr_cleanup; +extern int mtrr_cleanup(unsigned address_bits); ^ permalink raw reply related [flat|nested] 19+ messages in thread
* [tip:x86/mtrr] x86: print out mtrr_range_state when user specify size 2009-03-12 3:05 ` [PATCH] x86: print out mtrr_range_state when user specify size Yinghai Lu 2009-03-12 3:07 ` [PATCH] x86: seperate mtrr cleanup/mtrr_e820 trim to seperated file Yinghai Lu @ 2009-03-13 2:34 ` Yinghai Lu 1 sibling, 0 replies; 19+ messages in thread From: Yinghai Lu @ 2009-03-13 2:34 UTC (permalink / raw) To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, yinghai, tglx, mingo Commit-ID: c1ab7e93c6ddf8a068719b97b7e26c3d8eba7c32 Gitweb: http://git.kernel.org/tip/c1ab7e93c6ddf8a068719b97b7e26c3d8eba7c32 Author: Yinghai Lu <yinghai@kernel.org> AuthorDate: Wed, 11 Mar 2009 20:05:46 -0700 Commit: Ingo Molnar <mingo@elte.hu> CommitDate: Fri, 13 Mar 2009 02:52:18 +0100 x86: print out mtrr_range_state when user specify size Impact: print more debug info Keep it consistent with autodetect version. Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <49B87C0A.4010105@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> --- arch/x86/kernel/cpu/mtrr/main.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c index 236a401..311a473 100644 --- a/arch/x86/kernel/cpu/mtrr/main.c +++ b/arch/x86/kernel/cpu/mtrr/main.c @@ -1424,6 +1424,8 @@ static int __init mtrr_cleanup(unsigned address_bits) if (!result[i].bad) { set_var_mtrr_all(address_bits); + printk(KERN_DEBUG "New variable MTRRs\n"); + print_out_mtrr_range_state(); return 1; } printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, " ^ permalink raw reply related [flat|nested] 19+ messages in thread
* Re: [PATCH] x86: more debug print out with mtrr 2009-03-12 3:05 [PATCH] x86: more debug print out with mtrr Yinghai Lu 2009-03-12 3:05 ` [PATCH] x86: print out mtrr_range_state when user specify size Yinghai Lu @ 2009-03-13 1:40 ` Ingo Molnar 2009-03-13 1:43 ` Yinghai Lu ` (2 more replies) 1 sibling, 3 replies; 19+ messages in thread From: Ingo Molnar @ 2009-03-13 1:40 UTC (permalink / raw) To: Yinghai Lu; +Cc: Thomas Gleixner, H. Peter Anvin, linux-kernel@vger.kernel.org * Yinghai Lu <yinghai@kernel.org> wrote: > Impact: more print out > > remove unneeded mtrr_show > > it will only printout one time by first cpu, so it is not big deal. > > also print out directly from get_mtrr, because it doesn't update mtrr_state. FYI, this patch is whitespace and line-wrap corrupted, please resend. Ingo ^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH] x86: more debug print out with mtrr 2009-03-13 1:40 ` [PATCH] x86: more debug print out with mtrr Ingo Molnar @ 2009-03-13 1:43 ` Yinghai Lu 2009-03-13 2:34 ` [tip:x86/mtrr] x86: more MTRR debug printouts Yinghai Lu 2009-03-13 1:44 ` [PATCH] x86: print out mtrr_range_state when user specify size Yinghai Lu 2009-03-13 1:45 ` [PATCH] x86: seperate mtrr cleanup/mtrr_e820 trim to seperated file Yinghai Lu 2 siblings, 1 reply; 19+ messages in thread From: Yinghai Lu @ 2009-03-13 1:43 UTC (permalink / raw) To: Ingo Molnar, Thomas Gleixner, H. Peter Anvin; +Cc: linux-kernel@vger.kernel.org Impact: more print out remove unneeded mtrr_show it will only printout one time by first cpu, so it is not big deal. also print out directly from get_mtrr, because it doesn't update mtrr_state. Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- arch/x86/kernel/cpu/mtrr/generic.c | 93 +++++++++++++++++++------------------ 1 file changed, 50 insertions(+), 43 deletions(-) Index: linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/generic.c +++ linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c @@ -33,14 +33,6 @@ u64 mtrr_tom2; struct mtrr_state_type mtrr_state = {}; EXPORT_SYMBOL_GPL(mtrr_state); -static int __initdata mtrr_show; -static int __init mtrr_debug(char *opt) -{ - mtrr_show = 1; - return 0; -} -early_param("mtrr.show", mtrr_debug); - /* * Returns the effective MTRR type for the region * Error returns: @@ -193,13 +185,51 @@ static void print_fixed(unsigned base, u unsigned i; for (i = 0; i < 8; ++i, ++types, base += step) - printk(KERN_INFO "MTRR %05X-%05X %s\n", + printk(KERN_INFO " %05X-%05X %s\n", base, base + step - 1, mtrr_attrib_to_str(*types)); } static void prepare_set(void); static void post_set(void); +static void __init print_mtrr_state(void) +{ + unsigned int i; + int high_width; + + printk(KERN_INFO "MTRR default type: %s\n", mtrr_attrib_to_str(mtrr_state.def_type)); + if (mtrr_state.have_fixed) { + printk(KERN_INFO "MTRR fixed ranges %sabled:\n", + mtrr_state.enabled & 1 ? "en" : "dis"); + print_fixed(0x00000, 0x10000, mtrr_state.fixed_ranges + 0); + for (i = 0; i < 2; ++i) + print_fixed(0x80000 + i * 0x20000, 0x04000, mtrr_state.fixed_ranges + (i + 1) * 8); + for (i = 0; i < 8; ++i) + print_fixed(0xC0000 + i * 0x08000, 0x01000, mtrr_state.fixed_ranges + (i + 3) * 8); + } + printk(KERN_INFO "MTRR variable ranges %sabled:\n", + mtrr_state.enabled & 2 ? "en" : "dis"); + high_width = ((size_or_mask ? ffs(size_or_mask) - 1 : 32) - (32 - PAGE_SHIFT) + 3) / 4; + for (i = 0; i < num_var_ranges; ++i) { + if (mtrr_state.var_ranges[i].mask_lo & (1 << 11)) + printk(KERN_INFO " %u base %0*X%05X000 mask %0*X%05X000 %s\n", + i, + high_width, + mtrr_state.var_ranges[i].base_hi, + mtrr_state.var_ranges[i].base_lo >> 12, + high_width, + mtrr_state.var_ranges[i].mask_hi, + mtrr_state.var_ranges[i].mask_lo >> 12, + mtrr_attrib_to_str(mtrr_state.var_ranges[i].base_lo & 0xff)); + else + printk(KERN_INFO " %u disabled\n", i); + } + if (mtrr_tom2) { + printk(KERN_INFO "TOM2: %016llx aka %lldM\n", + mtrr_tom2, mtrr_tom2>>20); + } +} + /* Grab all of the MTRR state for this CPU into *state */ void __init get_mtrr_state(void) { @@ -231,41 +261,9 @@ void __init get_mtrr_state(void) mtrr_tom2 |= low; mtrr_tom2 &= 0xffffff800000ULL; } - if (mtrr_show) { - int high_width; - printk(KERN_INFO "MTRR default type: %s\n", mtrr_attrib_to_str(mtrr_state.def_type)); - if (mtrr_state.have_fixed) { - printk(KERN_INFO "MTRR fixed ranges %sabled:\n", - mtrr_state.enabled & 1 ? "en" : "dis"); - print_fixed(0x00000, 0x10000, mtrr_state.fixed_ranges + 0); - for (i = 0; i < 2; ++i) - print_fixed(0x80000 + i * 0x20000, 0x04000, mtrr_state.fixed_ranges + (i + 1) * 8); - for (i = 0; i < 8; ++i) - print_fixed(0xC0000 + i * 0x08000, 0x01000, mtrr_state.fixed_ranges + (i + 3) * 8); - } - printk(KERN_INFO "MTRR variable ranges %sabled:\n", - mtrr_state.enabled & 2 ? "en" : "dis"); - high_width = ((size_or_mask ? ffs(size_or_mask) - 1 : 32) - (32 - PAGE_SHIFT) + 3) / 4; - for (i = 0; i < num_var_ranges; ++i) { - if (mtrr_state.var_ranges[i].mask_lo & (1 << 11)) - printk(KERN_INFO "MTRR %u base %0*X%05X000 mask %0*X%05X000 %s\n", - i, - high_width, - mtrr_state.var_ranges[i].base_hi, - mtrr_state.var_ranges[i].base_lo >> 12, - high_width, - mtrr_state.var_ranges[i].mask_hi, - mtrr_state.var_ranges[i].mask_lo >> 12, - mtrr_attrib_to_str(mtrr_state.var_ranges[i].base_lo & 0xff)); - else - printk(KERN_INFO "MTRR %u disabled\n", i); - } - if (mtrr_tom2) { - printk(KERN_INFO "TOM2: %016llx aka %lldM\n", - mtrr_tom2, mtrr_tom2>>20); - } - } + print_mtrr_state(); + mtrr_state_set = 1; /* PAT setup for BP. We need to go through sync steps here */ @@ -377,7 +375,12 @@ static void generic_get_mtrr(unsigned in unsigned int mask_lo, mask_hi, base_lo, base_hi; unsigned int tmp, hi; + /* + * get_mtrr doesn't need to update mtrr_state, also it could be called + * from any cpu, so try to print it out directly. + */ rdmsr(MTRRphysMask_MSR(reg), mask_lo, mask_hi); + if ((mask_lo & 0x800) == 0) { /* Invalid (i.e. free) range */ *base = 0; @@ -407,6 +410,10 @@ static void generic_get_mtrr(unsigned in *size = -mask_lo; *base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT; *type = base_lo & 0xff; + + printk(KERN_DEBUG " get_mtrr: cpu%d reg%02d base=%010lx size=%010lx %s\n", + smp_processor_id(), reg, *base, *size, + mtrr_attrib_to_str(*type & 0xff)); } /** ^ permalink raw reply [flat|nested] 19+ messages in thread
* [tip:x86/mtrr] x86: more MTRR debug printouts 2009-03-13 1:43 ` Yinghai Lu @ 2009-03-13 2:34 ` Yinghai Lu 2009-03-13 4:26 ` Jaswinder Singh Rajput 2009-03-13 15:33 ` Jaswinder Singh Rajput 0 siblings, 2 replies; 19+ messages in thread From: Yinghai Lu @ 2009-03-13 2:34 UTC (permalink / raw) To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, yinghai, tglx, mingo Commit-ID: 8ad9790588ee2e69118b2b294ddab6f3f0379ad9 Gitweb: http://git.kernel.org/tip/8ad9790588ee2e69118b2b294ddab6f3f0379ad9 Author: Yinghai Lu <yinghai@kernel.org> AuthorDate: Thu, 12 Mar 2009 18:43:54 -0700 Commit: Ingo Molnar <mingo@elte.hu> CommitDate: Fri, 13 Mar 2009 02:52:18 +0100 x86: more MTRR debug printouts Impact: improve MTRR debugging messages There's still inefficiencies suspected with the MTRR sanitizing code, so make sure we get all the info we need from a dmesg. - Remove unneeded mtrr_show (It will only printout one time by first cpu, so it is no big deal.) - Also print out directly from get_mtrr, because it doesn't update mtrr_state. Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <49B9BA5A.40108@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> --- arch/x86/kernel/cpu/mtrr/generic.c | 95 +++++++++++++++++++----------------- 1 files changed, 51 insertions(+), 44 deletions(-) diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c index 0c0a455..9644035 100644 --- a/arch/x86/kernel/cpu/mtrr/generic.c +++ b/arch/x86/kernel/cpu/mtrr/generic.c @@ -33,14 +33,6 @@ u64 mtrr_tom2; struct mtrr_state_type mtrr_state = {}; EXPORT_SYMBOL_GPL(mtrr_state); -static int __initdata mtrr_show; -static int __init mtrr_debug(char *opt) -{ - mtrr_show = 1; - return 0; -} -early_param("mtrr.show", mtrr_debug); - /* * Returns the effective MTRR type for the region * Error returns: @@ -193,13 +185,51 @@ static void print_fixed(unsigned base, unsigned step, const mtrr_type*types) unsigned i; for (i = 0; i < 8; ++i, ++types, base += step) - printk(KERN_INFO "MTRR %05X-%05X %s\n", + printk(KERN_INFO " %05X-%05X %s\n", base, base + step - 1, mtrr_attrib_to_str(*types)); } static void prepare_set(void); static void post_set(void); +static void __init print_mtrr_state(void) +{ + unsigned int i; + int high_width; + + printk(KERN_INFO "MTRR default type: %s\n", mtrr_attrib_to_str(mtrr_state.def_type)); + if (mtrr_state.have_fixed) { + printk(KERN_INFO "MTRR fixed ranges %sabled:\n", + mtrr_state.enabled & 1 ? "en" : "dis"); + print_fixed(0x00000, 0x10000, mtrr_state.fixed_ranges + 0); + for (i = 0; i < 2; ++i) + print_fixed(0x80000 + i * 0x20000, 0x04000, mtrr_state.fixed_ranges + (i + 1) * 8); + for (i = 0; i < 8; ++i) + print_fixed(0xC0000 + i * 0x08000, 0x01000, mtrr_state.fixed_ranges + (i + 3) * 8); + } + printk(KERN_INFO "MTRR variable ranges %sabled:\n", + mtrr_state.enabled & 2 ? "en" : "dis"); + high_width = ((size_or_mask ? ffs(size_or_mask) - 1 : 32) - (32 - PAGE_SHIFT) + 3) / 4; + for (i = 0; i < num_var_ranges; ++i) { + if (mtrr_state.var_ranges[i].mask_lo & (1 << 11)) + printk(KERN_INFO " %u base %0*X%05X000 mask %0*X%05X000 %s\n", + i, + high_width, + mtrr_state.var_ranges[i].base_hi, + mtrr_state.var_ranges[i].base_lo >> 12, + high_width, + mtrr_state.var_ranges[i].mask_hi, + mtrr_state.var_ranges[i].mask_lo >> 12, + mtrr_attrib_to_str(mtrr_state.var_ranges[i].base_lo & 0xff)); + else + printk(KERN_INFO " %u disabled\n", i); + } + if (mtrr_tom2) { + printk(KERN_INFO "TOM2: %016llx aka %lldM\n", + mtrr_tom2, mtrr_tom2>>20); + } +} + /* Grab all of the MTRR state for this CPU into *state */ void __init get_mtrr_state(void) { @@ -231,41 +261,9 @@ void __init get_mtrr_state(void) mtrr_tom2 |= low; mtrr_tom2 &= 0xffffff800000ULL; } - if (mtrr_show) { - int high_width; - - printk(KERN_INFO "MTRR default type: %s\n", mtrr_attrib_to_str(mtrr_state.def_type)); - if (mtrr_state.have_fixed) { - printk(KERN_INFO "MTRR fixed ranges %sabled:\n", - mtrr_state.enabled & 1 ? "en" : "dis"); - print_fixed(0x00000, 0x10000, mtrr_state.fixed_ranges + 0); - for (i = 0; i < 2; ++i) - print_fixed(0x80000 + i * 0x20000, 0x04000, mtrr_state.fixed_ranges + (i + 1) * 8); - for (i = 0; i < 8; ++i) - print_fixed(0xC0000 + i * 0x08000, 0x01000, mtrr_state.fixed_ranges + (i + 3) * 8); - } - printk(KERN_INFO "MTRR variable ranges %sabled:\n", - mtrr_state.enabled & 2 ? "en" : "dis"); - high_width = ((size_or_mask ? ffs(size_or_mask) - 1 : 32) - (32 - PAGE_SHIFT) + 3) / 4; - for (i = 0; i < num_var_ranges; ++i) { - if (mtrr_state.var_ranges[i].mask_lo & (1 << 11)) - printk(KERN_INFO "MTRR %u base %0*X%05X000 mask %0*X%05X000 %s\n", - i, - high_width, - mtrr_state.var_ranges[i].base_hi, - mtrr_state.var_ranges[i].base_lo >> 12, - high_width, - mtrr_state.var_ranges[i].mask_hi, - mtrr_state.var_ranges[i].mask_lo >> 12, - mtrr_attrib_to_str(mtrr_state.var_ranges[i].base_lo & 0xff)); - else - printk(KERN_INFO "MTRR %u disabled\n", i); - } - if (mtrr_tom2) { - printk(KERN_INFO "TOM2: %016llx aka %lldM\n", - mtrr_tom2, mtrr_tom2>>20); - } - } + + print_mtrr_state(); + mtrr_state_set = 1; /* PAT setup for BP. We need to go through sync steps here */ @@ -377,7 +375,12 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base, unsigned int mask_lo, mask_hi, base_lo, base_hi; unsigned int tmp, hi; + /* + * get_mtrr doesn't need to update mtrr_state, also it could be called + * from any cpu, so try to print it out directly. + */ rdmsr(MTRRphysMask_MSR(reg), mask_lo, mask_hi); + if ((mask_lo & 0x800) == 0) { /* Invalid (i.e. free) range */ *base = 0; @@ -407,6 +410,10 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base, *size = -mask_lo; *base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT; *type = base_lo & 0xff; + + printk(KERN_DEBUG " get_mtrr: cpu%d reg%02d base=%010lx size=%010lx %s\n", + smp_processor_id(), reg, *base, *size, + mtrr_attrib_to_str(*type & 0xff)); } /** ^ permalink raw reply related [flat|nested] 19+ messages in thread
* Re: [tip:x86/mtrr] x86: more MTRR debug printouts 2009-03-13 2:34 ` [tip:x86/mtrr] x86: more MTRR debug printouts Yinghai Lu @ 2009-03-13 4:26 ` Jaswinder Singh Rajput 2009-03-13 15:33 ` Jaswinder Singh Rajput 1 sibling, 0 replies; 19+ messages in thread From: Jaswinder Singh Rajput @ 2009-03-13 4:26 UTC (permalink / raw) To: mingo, hpa, linux-kernel, yinghai, tglx, mingo; +Cc: linux-tip-commits On Fri, 2009-03-13 at 02:34 +0000, Yinghai Lu wrote: > Commit-ID: 8ad9790588ee2e69118b2b294ddab6f3f0379ad9 > Gitweb: http://git.kernel.org/tip/8ad9790588ee2e69118b2b294ddab6f3f0379ad9 > Author: Yinghai Lu <yinghai@kernel.org> > AuthorDate: Thu, 12 Mar 2009 18:43:54 -0700 > Commit: Ingo Molnar <mingo@elte.hu> > CommitDate: Fri, 13 Mar 2009 02:52:18 +0100 > > x86: more MTRR debug printouts > > Impact: improve MTRR debugging messages > > There's still inefficiencies suspected with the MTRR sanitizing > code, so make sure we get all the info we need from a dmesg. > > - Remove unneeded mtrr_show > > (It will only printout one time by first cpu, so it is no big deal.) > > - Also print out directly from get_mtrr, because it doesn't update mtrr_state. > Is there any worth moving these debug functions to arch/x86/kernel/cpu/cpu_debug.c By little bit changes you can desired results through: print_msr(NULL, cpu, CPU_MTRR); More cpu's flag available at: arch/x86/include/asm/cpu_debug.h by using cpu_debug you can read/write registers through kernel/user mode. Thanks, -- JSR ^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [tip:x86/mtrr] x86: more MTRR debug printouts 2009-03-13 2:34 ` [tip:x86/mtrr] x86: more MTRR debug printouts Yinghai Lu 2009-03-13 4:26 ` Jaswinder Singh Rajput @ 2009-03-13 15:33 ` Jaswinder Singh Rajput 2009-03-13 15:45 ` Jaswinder Singh Rajput 1 sibling, 1 reply; 19+ messages in thread From: Jaswinder Singh Rajput @ 2009-03-13 15:33 UTC (permalink / raw) To: mingo, hpa, linux-kernel, yinghai, tglx, mingo; +Cc: linux-tip-commits On Fri, 2009-03-13 at 02:34 +0000, Yinghai Lu wrote: > Commit-ID: 8ad9790588ee2e69118b2b294ddab6f3f0379ad9 > Gitweb: http://git.kernel.org/tip/8ad9790588ee2e69118b2b294ddab6f3f0379ad9 > Author: Yinghai Lu <yinghai@kernel.org> > AuthorDate: Thu, 12 Mar 2009 18:43:54 -0700 > Commit: Ingo Molnar <mingo@elte.hu> > CommitDate: Fri, 13 Mar 2009 02:52:18 +0100 > > x86: more MTRR debug printouts > > Impact: improve MTRR debugging messages > > There's still inefficiencies suspected with the MTRR sanitizing > code, so make sure we get all the info we need from a dmesg. > > - Remove unneeded mtrr_show > > (It will only printout one time by first cpu, so it is no big deal.) > > - Also print out directly from get_mtrr, because it doesn't update mtrr_state. > > Signed-off-by: Yinghai Lu <yinghai@kernel.org> > LKML-Reference: <49B9BA5A.40108@kernel.org> > Signed-off-by: Ingo Molnar <mingo@elte.hu> > > > *base = 0; > @@ -407,6 +410,10 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base, > *size = -mask_lo; > *base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT; > *type = base_lo & 0xff; > + > + printk(KERN_DEBUG " get_mtrr: cpu%d reg%02d base=%010lx size=%010lx %s\n", > + smp_processor_id(), reg, *base, *size, > + mtrr_attrib_to_str(*type & 0xff)); > } > This leads to: Kernel failure message 1: BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 caller is generic_get_mtrr+0x12a/0x146 Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 Call Trace: [<c0412cc3>] ? printk+0x14/0x16 [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [<c010e351>] mtrr_add_page+0x154/0x332 [<c010e7b1>] mtrr_file_add+0x72/0x86 [<c010e9e0>] mtrr_ioctl+0x21b/0x309 [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [<c0194101>] vfs_ioctl+0x27/0x6e [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e [<c01898b0>] ? fget_light+0x40/0x130 [<c01946ee>] sys_ioctl+0x34/0x61 [<c0102c73>] sysenter_do_call+0x12/0x25 Kernel failure message 2: BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 caller is generic_get_mtrr+0x12a/0x146 Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 Call Trace: [<c0412cc3>] ? printk+0x14/0x16 [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [<c010e96f>] mtrr_ioctl+0x1aa/0x309 [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [<c0194101>] vfs_ioctl+0x27/0x6e [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e [<c01898b0>] ? fget_light+0x40/0x130 [<c01946ee>] sys_ioctl+0x34/0x61 [<c0102c73>] sysenter_do_call+0x12/0x25 [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 Kernel failure message 3: BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 caller is generic_get_mtrr+0x12a/0x146 Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 Call Trace: [<c0412cc3>] ? printk+0x14/0x16 [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [<c010e96f>] mtrr_ioctl+0x1aa/0x309 [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [<c0194101>] vfs_ioctl+0x27/0x6e [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [<c01898b0>] ? fget_light+0x40/0x130 [<c01946ee>] sys_ioctl+0x34/0x61 [<c0102c73>] sysenter_do_call+0x12/0x25 [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 Thanks, -- JSR ^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [tip:x86/mtrr] x86: more MTRR debug printouts 2009-03-13 15:33 ` Jaswinder Singh Rajput @ 2009-03-13 15:45 ` Jaswinder Singh Rajput 2009-03-13 19:46 ` Yinghai Lu 0 siblings, 1 reply; 19+ messages in thread From: Jaswinder Singh Rajput @ 2009-03-13 15:45 UTC (permalink / raw) To: mingo; +Cc: hpa, linux-kernel, yinghai, tglx, mingo, linux-tip-commits [-- Attachment #1: Type: text/plain, Size: 49383 bytes --] On Fri, 2009-03-13 at 21:03 +0530, Jaswinder Singh Rajput wrote: > On Fri, 2009-03-13 at 02:34 +0000, Yinghai Lu wrote: > > Commit-ID: 8ad9790588ee2e69118b2b294ddab6f3f0379ad9 > > Gitweb: http://git.kernel.org/tip/8ad9790588ee2e69118b2b294ddab6f3f0379ad9 > > Author: Yinghai Lu <yinghai@kernel.org> > > AuthorDate: Thu, 12 Mar 2009 18:43:54 -0700 > > Commit: Ingo Molnar <mingo@elte.hu> > > CommitDate: Fri, 13 Mar 2009 02:52:18 +0100 > > > > x86: more MTRR debug printouts > > > > Impact: improve MTRR debugging messages > > > > There's still inefficiencies suspected with the MTRR sanitizing > > code, so make sure we get all the info we need from a dmesg. > > > > - Remove unneeded mtrr_show > > > > (It will only printout one time by first cpu, so it is no big deal.) > > > > - Also print out directly from get_mtrr, because it doesn't update mtrr_state. > > > > Signed-off-by: Yinghai Lu <yinghai@kernel.org> > > LKML-Reference: <49B9BA5A.40108@kernel.org> > > Signed-off-by: Ingo Molnar <mingo@elte.hu> > > > > > > *base = 0; > > @@ -407,6 +410,10 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base, > > *size = -mask_lo; > > *base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT; > > *type = base_lo & 0xff; > > + > > + printk(KERN_DEBUG " get_mtrr: cpu%d reg%02d base=%010lx size=%010lx %s\n", > > + smp_processor_id(), reg, *base, *size, > > + mtrr_attrib_to_str(*type & 0xff)); > > } > > > > This leads to: > > Kernel failure message 1: > BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 > caller is generic_get_mtrr+0x12a/0x146 > Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar > 13 20:43:36 IST 2009 > Call Trace: > [<c0412cc3>] ? printk+0x14/0x16 > [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 > [<c010f0c3>] generic_get_mtrr+0x12a/0x146 > [<c010e351>] mtrr_add_page+0x154/0x332 > [<c010e7b1>] mtrr_file_add+0x72/0x86 > [<c010e9e0>] mtrr_ioctl+0x21b/0x309 > [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 > [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 > [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 > [<c0194101>] vfs_ioctl+0x27/0x6e > [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 > [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e > [<c01898b0>] ? fget_light+0x40/0x130 > [<c01946ee>] sys_ioctl+0x34/0x61 > [<c0102c73>] sysenter_do_call+0x12/0x25 > This is beautiful dmesg: [ 0.000000] Linux version 2.6.29-rc8-tip (jaswinder@ht.satnam) (gcc version 4.3.2 20081105 (Red Hat 4.3.2-7) (GCC) ) #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 0.000000] KERNEL supported cpus: [ 0.000000] Intel GenuineIntel [ 0.000000] AMD AuthenticAMD [ 0.000000] NSC Geode by NSC [ 0.000000] Cyrix CyrixInstead [ 0.000000] Centaur CentaurHauls [ 0.000000] Transmeta GenuineTMx86 [ 0.000000] Transmeta TransmetaCPU [ 0.000000] UMC UMC UMC UMC [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009fc00 (usable) [ 0.000000] BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved) [ 0.000000] BIOS-e820: 00000000000e6000 - 0000000000100000 (reserved) [ 0.000000] BIOS-e820: 0000000000100000 - 000000003ff2fc00 (usable) [ 0.000000] BIOS-e820: 000000003ff2fc00 - 000000003ff30000 (ACPI NVS) [ 0.000000] BIOS-e820: 000000003ff30000 - 000000003ff40000 (ACPI data) [ 0.000000] BIOS-e820: 000000003ff40000 - 000000003fff0000 (ACPI NVS) [ 0.000000] BIOS-e820: 000000003fff0000 - 0000000040000000 (reserved) [ 0.000000] BIOS-e820: 00000000fecf0000 - 00000000fecf1000 (reserved) [ 0.000000] BIOS-e820: 00000000fed20000 - 00000000feda0000 (reserved) [ 0.000000] DMI 2.3 present. [ 0.000000] last_pfn = 0x3ff2f max_arch_pfn = 0x100000 [ 0.000000] MTRR default type: uncachable [ 0.000000] MTRR fixed ranges enabled: [ 0.000000] 00000-0FFFF write-back [ 0.000000] 10000-1FFFF write-back [ 0.000000] 20000-2FFFF write-back [ 0.000000] 30000-3FFFF write-back [ 0.000000] 40000-4FFFF write-back [ 0.000000] 50000-5FFFF write-back [ 0.000000] 60000-6FFFF write-back [ 0.000000] 70000-7FFFF write-back [ 0.000000] 80000-83FFF write-back [ 0.000000] 84000-87FFF write-back [ 0.000000] 88000-8BFFF write-back [ 0.000000] 8C000-8FFFF write-back [ 0.000000] 90000-93FFF write-back [ 0.000000] 94000-97FFF write-back [ 0.000000] 98000-9BFFF write-back [ 0.000000] 9C000-9FFFF write-back [ 0.000000] A0000-A3FFF uncachable [ 0.000000] A4000-A7FFF uncachable [ 0.000000] A8000-ABFFF uncachable [ 0.000000] AC000-AFFFF uncachable [ 0.000000] B0000-B3FFF uncachable [ 0.000000] B4000-B7FFF uncachable [ 0.000000] B8000-BBFFF uncachable [ 0.000000] BC000-BFFFF uncachable [ 0.000000] C0000-C0FFF uncachable [ 0.000000] C1000-C1FFF uncachable [ 0.000000] C2000-C2FFF uncachable [ 0.000000] C3000-C3FFF uncachable [ 0.000000] C4000-C4FFF uncachable [ 0.000000] C5000-C5FFF uncachable [ 0.000000] C6000-C6FFF uncachable [ 0.000000] C7000-C7FFF uncachable [ 0.000000] C8000-C8FFF uncachable [ 0.000000] C9000-C9FFF uncachable [ 0.000000] CA000-CAFFF uncachable [ 0.000000] CB000-CBFFF uncachable [ 0.000000] CC000-CCFFF uncachable [ 0.000000] CD000-CDFFF uncachable [ 0.000000] CE000-CEFFF uncachable [ 0.000000] CF000-CFFFF uncachable [ 0.000000] D0000-D0FFF uncachable [ 0.000000] D1000-D1FFF uncachable [ 0.000000] D2000-D2FFF uncachable [ 0.000000] D3000-D3FFF uncachable [ 0.000000] D4000-D4FFF uncachable [ 0.000000] D5000-D5FFF uncachable [ 0.000000] D6000-D6FFF uncachable [ 0.000000] D7000-D7FFF uncachable [ 0.000000] D8000-D8FFF uncachable [ 0.000000] D9000-D9FFF uncachable [ 0.000000] DA000-DAFFF uncachable [ 0.000000] DB000-DBFFF uncachable [ 0.000000] DC000-DCFFF uncachable [ 0.000000] DD000-DDFFF uncachable [ 0.000000] DE000-DEFFF uncachable [ 0.000000] DF000-DFFFF uncachable [ 0.000000] E0000-E0FFF uncachable [ 0.000000] E1000-E1FFF uncachable [ 0.000000] E2000-E2FFF uncachable [ 0.000000] E3000-E3FFF uncachable [ 0.000000] E4000-E4FFF uncachable [ 0.000000] E5000-E5FFF uncachable [ 0.000000] E6000-E6FFF uncachable [ 0.000000] E7000-E7FFF uncachable [ 0.000000] E8000-E8FFF uncachable [ 0.000000] E9000-E9FFF uncachable [ 0.000000] EA000-EAFFF uncachable [ 0.000000] EB000-EBFFF uncachable [ 0.000000] EC000-ECFFF uncachable [ 0.000000] ED000-EDFFF uncachable [ 0.000000] EE000-EEFFF uncachable [ 0.000000] EF000-EFFFF uncachable [ 0.000000] F0000-F0FFF write-protect [ 0.000000] F1000-F1FFF write-protect [ 0.000000] F2000-F2FFF write-protect [ 0.000000] F3000-F3FFF write-protect [ 0.000000] F4000-F4FFF write-protect [ 0.000000] F5000-F5FFF write-protect [ 0.000000] F6000-F6FFF write-protect [ 0.000000] F7000-F7FFF write-protect [ 0.000000] F8000-F8FFF write-protect [ 0.000000] F9000-F9FFF write-protect [ 0.000000] FA000-FAFFF write-protect [ 0.000000] FB000-FBFFF write-protect [ 0.000000] FC000-FCFFF write-protect [ 0.000000] FD000-FDFFF write-protect [ 0.000000] FE000-FEFFF write-protect [ 0.000000] FF000-FFFFF write-protect [ 0.000000] MTRR variable ranges enabled: [ 0.000000] 0 base 000000000 mask FC0000000 write-back [ 0.000000] 1 disabled [ 0.000000] 2 disabled [ 0.000000] 3 disabled [ 0.000000] 4 disabled [ 0.000000] 5 disabled [ 0.000000] 6 disabled [ 0.000000] 7 disabled [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 [ 0.000000] get_mtrr: cpu0 reg00 base=0000000000 size=0000040000 write-back [ 0.000000] Warning only 895MB will be used. [ 0.000000] Use a HIGHMEM enabled kernel. [ 0.000000] init_memory_mapping: 0000000000000000-0000000037f4d000 [ 0.000000] 0000000000 - 0000400000 page 4k [ 0.000000] 0000400000 - 0037c00000 page 2M [ 0.000000] 0037c00000 - 0037f4d000 page 4k [ 0.000000] kernel direct mapping tables up to 37f4d000 @ 7000-c000 [ 0.000000] RAMDISK: 37ce3000 - 37fefe69 [ 0.000000] Allocated new RAMDISK: 0063d000 - 00949e69 [ 0.000000] Move RAMDISK from 0000000037ce3000 - 0000000037fefe68 to 0063d000 - 00949e68 [ 0.000000] ACPI: RSDP 000F61E0, 0014 (r0 ACPIAM) [ 0.000000] ACPI: RSDT 3FF30000, 0038 (r1 INTEL D865GBF 20040122 MSFT 97) [ 0.000000] ACPI: FACP 3FF30200, 0081 (r2 INTEL D865GBF 20040122 MSFT 97) [ 0.000000] FADT: X_PM1a_EVT_BLK.bit_width (16) does not match PM1_EVT_LEN (4) [ 0.000000] ACPI: DSDT 3FF30370, 4231 (r1 INTEL D865GBF 1 MSFT 100000D) [ 0.000000] ACPI: FACS 3FF40000, 0040 [ 0.000000] ACPI: APIC 3FF30300, 0068 (r1 INTEL D865GBF 20040122 MSFT 97) [ 0.000000] ACPI: ASF! 3FF345B0, 0099 (r16 LEGEND I865PASF 1 MSFT 100000D) [ 0.000000] ACPI: TCPA 3FF34649, 0034 (r1 INTEL TBLOEMID 1 MSFT 97) [ 0.000000] ACPI: WDDT 3FF3467D, 0040 (r1 INTEL OEMWDDT 1 MSFT 100000D) [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] 895MB LOWMEM available. [ 0.000000] mapped low ram: 0 - 37f4d000 [ 0.000000] low ram: 0 - 37f4d000 [ 0.000000] node 0 low ram: 00000000 - 37f4d000 [ 0.000000] node 0 bootmap 00008000 - 0000efec [ 0.000000] (9 early reservations) ==> bootmem [0000000000 - 0037f4d000] [ 0.000000] #0 [0000000000 - 0000001000] BIOS data page ==> [0000000000 - 0000001000] [ 0.000000] #1 [0000001000 - 0000002000] EX TRAMPOLINE ==> [0000001000 - 0000002000] [ 0.000000] #2 [0000006000 - 0000007000] TRAMPOLINE ==> [0000006000 - 0000007000] [ 0.000000] #3 [0000100000 - 0000639430] TEXT DATA BSS ==> [0000100000 - 0000639430] [ 0.000000] #4 [000063a000 - 000063d000] INIT_PG_TABLE ==> [000063a000 - 000063d000] [ 0.000000] #5 [000009fc00 - 0000100000] BIOS reserved ==> [000009fc00 - 0000100000] [ 0.000000] #6 [0000007000 - 0000008000] PGTABLE ==> [0000007000 - 0000008000] [ 0.000000] #7 [000063d000 - 0000949e69] NEW RAMDISK ==> [000063d000 - 0000949e69] [ 0.000000] #8 [0000008000 - 000000f000] BOOTMAP ==> [0000008000 - 000000f000] [ 0.000000] found SMP MP-table at [c00ff780] ff780 [ 0.000000] Zone PFN ranges: [ 0.000000] DMA 0x00000000 -> 0x00001000 [ 0.000000] Normal 0x00001000 -> 0x00037f4d [ 0.000000] Movable zone start PFN for each node [ 0.000000] early_node_map[2] active PFN ranges [ 0.000000] 0: 0x00000000 -> 0x0000009f [ 0.000000] 0: 0x00000100 -> 0x00037f4d [ 0.000000] On node 0 totalpages: 229100 [ 0.000000] free_area_init_node: node 0, pgdat c0541b00, node_mem_map c1000000 [ 0.000000] DMA zone: 32 pages used for memmap [ 0.000000] DMA zone: 0 pages reserved [ 0.000000] DMA zone: 3967 pages, LIFO batch:0 [ 0.000000] Normal zone: 1759 pages used for memmap [ 0.000000] Normal zone: 223342 pages, LIFO batch:31 [ 0.000000] Using APIC driver default [ 0.000000] ACPI: PM-Timer IO Port: 0x408 [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1]) [ 0.000000] ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0]) [ 0.000000] IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.000000] ACPI: IRQ0 used by override. [ 0.000000] ACPI: IRQ2 used by override. [ 0.000000] ACPI: IRQ9 used by override. [ 0.000000] Enabling APIC mode: Flat. Using 1 I/O APICs [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] SMP: Allowing 2 CPUs, 0 hotplug CPUs [ 0.000000] nr_irqs_gsi: 24 [ 0.000000] Allocating PCI resources starting at 50000000 (gap: 40000000:becf0000) [ 0.000000] NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:2 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 13 pages at c1704000, static data 29852 bytes [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 227309 [ 0.000000] Kernel command line: ro root=UUID=35775984-13c0-4e65-a754-6a2bfc5ce451 rhgb selinux=0 pause_on_oops=10000 [ 0.000000] Enabling fast FPU save and restore... done. [ 0.000000] Enabling unmasked SIMD FPU exception support... done. [ 0.000000] Initializing CPU#0 [ 0.000000] NR_IRQS:512 [ 0.000000] PID hash table entries: 4096 (order: 12, 16384 bytes) [ 0.000000] TSC: PIT calibration matches PMTIMER. 1 loops [ 0.000000] Detected 2793.182 MHz processor. [ 0.000999] Console: colour VGA+ 80x25 [ 0.000999] console [tty0] enabled [ 0.000999] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) [ 0.000999] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) [ 0.000999] Memory: 899652k/916788k available (3163k kernel code, 16648k reserved, 1405k data, 320k init, 0k highmem) [ 0.000999] virtual kernel memory layout: [ 0.000999] fixmap : 0xfff4f000 - 0xfffff000 ( 704 kB) [ 0.000999] vmalloc : 0xf874d000 - 0xfff4d000 ( 120 MB) [ 0.000999] lowmem : 0xc0000000 - 0xf7f4d000 ( 895 MB) [ 0.000999] .init : 0xc057e000 - 0xc05ce000 ( 320 kB) [ 0.000999] .data : 0xc0416e1c - 0xc05762fc (1405 kB) [ 0.000999] .text : 0xc0100000 - 0xc0416e1c (3163 kB) [ 0.000999] Checking if this processor honours the WP bit even in supervisor mode...Ok. [ 0.001010] Calibrating delay loop (skipped), value calculated using timer frequency.. 5586.36 BogoMIPS (lpj=2793182) [ 0.001270] Mount-cache hash table entries: 512 [ 0.001540] CPU: Trace cache: 12K uops, L1 D cache: 16K [ 0.001644] CPU: L2 cache: 1024K [ 0.001709] CPU: Physical Processor ID: 0 [ 0.001775] CPU: Processor Core ID: 0 [ 0.002007] using mwait in idle threads. [ 0.002088] Checking 'hlt' instruction... OK. [ 0.006556] Freeing SMP alternatives: 15k freed [ 0.006635] ACPI: Core revision 20081204 [ 0.017482] ftrace: converting mcount calls to 0f 1f 44 00 00 [ 0.017557] ftrace: allocating 14947 entries in 30 pages [ 0.019410] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.029496] CPU0: Intel(R) Pentium(R) 4 CPU 2.80GHz stepping 03 [ 0.029999] Booting processor 1 APIC 0x1 ip 0x6000 [ 0.000999] Initializing CPU#1 [ 0.000999] Calibrating delay using timer specific routine.. 5585.28 BogoMIPS (lpj=2792641) [ 0.000999] CPU: Trace cache: 12K uops, L1 D cache: 16K [ 0.000999] CPU: L2 cache: 1024K [ 0.000999] CPU: Physical Processor ID: 0 [ 0.000999] CPU: Processor Core ID: 0 [ 0.000999] x86 PAT enabled: cpu 1, old 0x7040600070406, new 0x7010600070106 [ 0.101013] CPU1: Intel(R) Pentium(R) 4 CPU 2.80GHz stepping 03 [ 0.101702] checking TSC synchronization [CPU#0 -> CPU#1]: passed. [ 0.102059] Brought up 2 CPUs [ 0.102129] Total of 2 processors activated (11171.64 BogoMIPS). [ 0.103044] CPU0 attaching sched-domain: [ 0.103050] domain 0: span 0-1 level SIBLING [ 0.103055] groups: 0 1 [ 0.103065] CPU1 attaching sched-domain: [ 0.103069] domain 0: span 0-1 level SIBLING [ 0.103074] groups: 1 0 [ 0.103631] net_namespace: 892 bytes [ 0.103818] NET: Registered protocol family 16 [ 0.104899] ACPI: bus type pci registered [ 0.106872] PCI: PCI BIOS revision 2.10 entry at 0xf0031, last bus=2 [ 0.106950] PCI: Using configuration type 1 for base access [ 0.116420] bio: create slab <bio-0> at 0 [ 0.117854] ACPI: EC: Look up EC in DSDT [ 0.127470] ACPI: Interpreter enabled [ 0.127539] ACPI: (supports S0 S5) [ 0.127684] ACPI: Using IOAPIC for interrupt routing [ 0.139826] ACPI: No dock devices found. [ 0.139928] ACPI: PCI Root Bridge [PCI0] (0000:00) [ 0.140139] pci 0000:00:00.0: reg 10 32bit mmio: [0xf8000000-0xfbffffff] [ 0.140300] pci 0000:00:1d.0: reg 20 io port: [0xcc00-0xcc1f] [ 0.140362] pci 0000:00:1d.1: reg 20 io port: [0xd000-0xd01f] [ 0.140428] pci 0000:00:1d.2: reg 20 io port: [0xd400-0xd41f] [ 0.140490] pci 0000:00:1d.3: reg 20 io port: [0xd800-0xd81f] [ 0.140561] pci 0000:00:1d.7: reg 10 32bit mmio: [0xffaffc00-0xffafffff] [ 0.140629] pci 0000:00:1d.7: PME# supported from D0 D3hot D3cold [ 0.140703] pci 0000:00:1d.7: PME# disabled [ 0.140872] pci 0000:00:1f.0: quirk: region 0400-047f claimed by ICH4 ACPI/GPIO/TCO [ 0.140978] pci 0000:00:1f.0: quirk: region 0500-053f claimed by ICH4 GPIO [ 0.141057] pci 0000:00:1f.1: reg 10 io port: [0x00-0x07] [ 0.141067] pci 0000:00:1f.1: reg 14 io port: [0x00-0x03] [ 0.141076] pci 0000:00:1f.1: reg 18 io port: [0x00-0x07] [ 0.141085] pci 0000:00:1f.1: reg 1c io port: [0x00-0x03] [ 0.141094] pci 0000:00:1f.1: reg 20 io port: [0xffa0-0xffaf] [ 0.141104] pci 0000:00:1f.1: reg 24 32bit mmio: [0x000000-0x0003ff] [ 0.141140] pci 0000:00:1f.2: reg 10 io port: [0xec00-0xec07] [ 0.141149] pci 0000:00:1f.2: reg 14 io port: [0xe800-0xe803] [ 0.141158] pci 0000:00:1f.2: reg 18 io port: [0xe400-0xe407] [ 0.141166] pci 0000:00:1f.2: reg 1c io port: [0xe000-0xe003] [ 0.141175] pci 0000:00:1f.2: reg 20 io port: [0xdc00-0xdc0f] [ 0.141235] pci 0000:00:1f.3: reg 20 io port: [0xc800-0xc81f] [ 0.141299] pci 0000:00:1f.5: reg 18 32bit mmio: [0xffaff800-0xffaff9ff] [ 0.141309] pci 0000:00:1f.5: reg 1c 32bit mmio: [0xffaff400-0xffaff4ff] [ 0.141345] pci 0000:00:1f.5: PME# supported from D0 D3hot D3cold [ 0.141418] pci 0000:00:1f.5: PME# disabled [ 0.141529] pci 0000:01:00.0: reg 10 32bit mmio: [0xe0000000-0xefffffff] [ 0.141538] pci 0000:01:00.0: reg 14 io port: [0xa800-0xa8ff] [ 0.141546] pci 0000:01:00.0: reg 18 32bit mmio: [0xff8f0000-0xff8fffff] [ 0.141567] pci 0000:01:00.0: reg 30 32bit mmio: [0xff8c0000-0xff8dffff] [ 0.141593] pci 0000:01:00.0: supports D1 D2 [ 0.141638] pci 0000:00:01.0: bridge io port: [0xa000-0xafff] [ 0.141644] pci 0000:00:01.0: bridge 32bit mmio: [0xff800000-0xff8fffff] [ 0.141650] pci 0000:00:01.0: bridge 32bit mmio pref: [0xd6b00000-0xf6afffff] [ 0.141693] pci 0000:02:02.0: reg 10 io port: [0xb800-0xb8ff] [ 0.141703] pci 0000:02:02.0: reg 14 32bit mmio: [0xff9ffc00-0xff9ffcff] [ 0.141731] pci 0000:02:02.0: reg 30 32bit mmio: [0xff9c0000-0xff9dffff] [ 0.141754] pci 0000:02:02.0: supports D1 D2 [ 0.141758] pci 0000:02:02.0: PME# supported from D1 D2 D3hot D3cold [ 0.141831] pci 0000:02:02.0: PME# disabled [ 0.142010] pci 0000:00:1e.0: transparent bridge [ 0.142082] pci 0000:00:1e.0: bridge io port: [0xb000-0xbfff] [ 0.142089] pci 0000:00:1e.0: bridge 32bit mmio: [0xff900000-0xff9fffff] [ 0.142108] pci_bus 0000:00: on NUMA node 0 [ 0.142117] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT] [ 0.142232] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P1._PRT] [ 0.142308] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P3._PRT] [ 0.147132] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11 12 14 15) [ 0.147876] ACPI: PCI Interrupt Link [LNKB] (IRQs *3 4 5 6 7 9 10 11 12 14 15) [ 0.148629] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 *10 11 12 14 15) [ 0.149399] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 *5 6 7 9 10 11 12 14 15) [ 0.150163] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, disabled. [ 0.150969] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, disabled. [ 0.151767] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, disabled. [ 0.152602] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 *9 10 11 12 14 15) [ 0.153349] ACPI: Power Resource [URP1] (off) [ 0.153482] ACPI: Power Resource [FDDP] (off) [ 0.153602] ACPI: Power Resource [LPTP] (off) [ 0.154580] usbcore: registered new interface driver usbfs [ 0.154798] usbcore: registered new interface driver hub [ 0.154987] usbcore: registered new device driver usb [ 0.155542] PCI: Using ACPI for IRQ routing [ 0.160172] Warning: could not register annotated branches stats [ 0.164014] pnp: PnP ACPI init [ 0.164095] ACPI: bus type pnp registered [ 0.170284] pnp: PnP ACPI: found 14 devices [ 0.170353] ACPI: ACPI bus type pnp unregistered [ 0.170442] system 00:0a: ioport range 0x4d0-0x4d1 has been reserved [ 0.170523] system 00:0c: ioport range 0x400-0x47f has been reserved [ 0.170595] system 00:0c: ioport range 0x680-0x6ff has been reserved [ 0.170667] system 00:0c: ioport range 0x500-0x53f has been reserved [ 0.170739] system 00:0c: iomem range 0xfec00000-0xfec00fff has been reserved [ 0.170814] system 00:0c: iomem range 0xfee00000-0xfee00fff has been reserved [ 0.170888] system 00:0c: iomem range 0xfed20000-0xfed9ffff has been reserved [ 0.170974] system 00:0d: iomem range 0x0-0x9ffff could not be reserved [ 0.171058] system 00:0d: iomem range 0xc0000-0xdffff could not be reserved [ 0.171131] system 00:0d: iomem range 0xe0000-0xfffff could not be reserved [ 0.171204] system 00:0d: iomem range 0x100000-0x3fffffff could not be reserved [ 0.206784] pci 0000:00:01.0: PCI bridge, secondary bus 0000:01 [ 0.206857] pci 0000:00:01.0: IO window: 0xa000-0xafff [ 0.206931] pci 0000:00:01.0: MEM window: 0xff800000-0xff8fffff [ 0.207013] pci 0000:00:01.0: PREFETCH window: 0x000000d6b00000-0x000000f6afffff [ 0.207117] pci 0000:00:1e.0: PCI bridge, secondary bus 0000:02 [ 0.207189] pci 0000:00:1e.0: IO window: 0xb000-0xbfff [ 0.207262] pci 0000:00:1e.0: MEM window: 0xff900000-0xff9fffff [ 0.207335] pci 0000:00:1e.0: PREFETCH window: 0x00000050000000-0x000000500fffff [ 0.207451] pci 0000:00:1e.0: setting latency timer to 64 [ 0.207459] pci_bus 0000:00: resource 0 io: [0x00-0xffff] [ 0.207464] pci_bus 0000:00: resource 1 mem: [0x000000-0xffffffff] [ 0.207468] pci_bus 0000:01: resource 0 io: [0xa000-0xafff] [ 0.207472] pci_bus 0000:01: resource 1 mem: [0xff800000-0xff8fffff] [ 0.207477] pci_bus 0000:01: resource 2 mem: [0xd6b00000-0xf6afffff] [ 0.207481] pci_bus 0000:01: resource 3 mem: [0x0-0x0] [ 0.207485] pci_bus 0000:02: resource 0 io: [0xb000-0xbfff] [ 0.207490] pci_bus 0000:02: resource 1 mem: [0xff900000-0xff9fffff] [ 0.207494] pci_bus 0000:02: resource 2 mem: [0x50000000-0x500fffff] [ 0.207498] pci_bus 0000:02: resource 3 io: [0x00-0xffff] [ 0.207503] pci_bus 0000:02: resource 4 mem: [0x000000-0xffffffff] [ 0.207581] NET: Registered protocol family 2 [ 0.219052] IP route cache hash table entries: 32768 (order: 5, 131072 bytes) [ 0.219362] TCP established hash table entries: 131072 (order: 8, 1048576 bytes) [ 0.220122] TCP bind hash table entries: 65536 (order: 7, 524288 bytes) [ 0.220672] TCP: Hash tables configured (established 131072 bind 65536) [ 0.220744] TCP reno registered [ 0.223114] NET: Registered protocol family 1 [ 0.223279] Unpacking initramfs... done [ 0.368226] Freeing initrd memory: 3123k freed [ 0.372885] Microcode Update Driver: v2.00 <tigran@aivazian.fsnet.co.uk>, Peter Oruba [ 0.374075] JFS: nTxBlock = 7053, nTxLock = 56430 [ 0.378762] msgmni has been set to 1763 [ 0.378858] io scheduler noop registered [ 0.378930] io scheduler anticipatory registered [ 0.379010] io scheduler deadline registered [ 0.379130] io scheduler cfq registered (default) [ 0.379324] pci 0000:01:00.0: Boot video device [ 0.379730] pci_hotplug: PCI Hot Plug PCI Core version: 0.5 [ 0.379800] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 0.382998] input: Power Button (FF) as /class/input/input0 [ 0.383073] ACPI: Power Button (FF) [PWRF] [ 0.383330] input: Sleep Button (CM) as /class/input/input1 [ 0.383407] ACPI: Sleep Button (CM) [SLPB] [ 0.383983] processor ACPI_CPU:00: registered as cooling_device0 [ 0.384058] ACPI: Processor [CPU1] (supports 8 throttling states) [ 0.384367] processor ACPI_CPU:01: registered as cooling_device1 [ 0.384444] ACPI: Processor [CPU2] (supports 8 throttling states) [ 0.402158] Real Time Clock Driver v1.12b [ 0.402312] Non-volatile memory driver v1.3 [ 0.402450] intel_rng: Firmware space is locked read-only. If you can't or [ 0.402453] intel_rng: don't want to disable this in firmware setup, and if [ 0.402454] intel_rng: you are certain that your system has a functional [ 0.402456] intel_rng: RNG, try using the 'no_fwh_detect' option. [ 0.402729] Linux agpgart interface v0.103 [ 0.402926] agpgart-intel 0000:00:00.0: Intel 865 Chipset [ 0.406257] agpgart-intel 0000:00:00.0: AGP aperture is 64M @ 0xf8000000 [ 0.406511] [drm] Initialized drm 1.1.0 20060810 [ 0.407144] pci 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 0.407246] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 0.407253] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 0.407909] [drm] Initialized radeon 1.29.0 20080528 on minor 0 [ 0.408701] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 0.656995] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A [ 0.657889] 00:08: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A [ 0.659870] loop: module loaded [ 0.660133] e100: Intel(R) PRO/100 Network Driver, 3.5.23-k6-NAPI [ 0.660204] e100: Copyright(c) 1999-2006 Intel Corporation [ 0.660697] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded [ 0.660788] r8169 0000:02:02.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 [ 0.660901] r8169 0000:02:02.0: no PCI Express capability [ 0.661179] r8169 0000:02:02.0: MAC address found in EEPROM: 00:14:d1:16:46:5e [ 0.661468] eth0: RTL8169sb/8110sb at 0xf8b9ec00, 00:14:d1:16:46:5e, XID 10000000 IRQ 17 [ 0.662153] Linux video capture interface: v2.00 [ 0.662292] gspca: main v2.4.0 registered [ 0.662442] usbcore: registered new interface driver ov519 [ 0.662514] ov519: registered [ 0.663227] Uniform Multi-Platform E-IDE driver [ 0.663477] piix 0000:00:1f.1: IDE controller (0x8086:0x24db rev 0x02) [ 0.663555] pci 0000:00:1f.1: enabling device (0005 -> 0007) [ 0.663631] pci 0000:00:1f.1: PCI INT A -> GSI 18 (level, low) -> IRQ 18 [ 0.663723] piix 0000:00:1f.1: not 100% native mode: will probe irqs later [ 0.663854] ide0: BM-DMA at 0xffa0-0xffa7 [ 0.663933] ide1: BM-DMA at 0xffa8-0xffaf [ 0.664005] Probing IDE interface ide0... [ 0.706801] Switched to high resolution mode on CPU 1 [ 0.706894] Switched to high resolution mode on CPU 0 [ 0.928399] hda: SAMSUNG SP0802N, ATA DISK drive [ 1.540365] hda: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 1.540438] hda: UDMA/100 mode selected [ 1.540567] Probing IDE interface ide1... [ 2.212398] hdc: DVD RW DRU-820A, ATAPI CD/DVD-ROM drive [ 2.926399] hdd: HL-DT-ST GCE-8525B, ATAPI CD/DVD-ROM drive [ 2.977363] hdc: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 2.978265] hdc: host side 80-wire cable detection failed, limiting max speed to UDMA33 [ 2.978365] hdc: UDMA/33 mode selected [ 2.979332] hdd: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 2.979421] hdd: UDMA/33 mode selected [ 2.979631] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 [ 2.979774] ide1 at 0x170-0x177,0x376 on irq 15 [ 2.980835] ide_generic: please use "probe_mask=0x3f" module parameter for probing all legacy ISA IDE ports [ 2.981022] ide-gd driver 1.18 [ 2.981122] hda: max request size: 512KiB [ 2.993093] hda: 156368016 sectors (80060 MB) w/2048KiB Cache, CHS=16383/255/63 [ 2.993479] hda: cache flushes supported [ 2.993605] hda: hda1 hda2 hda3 hda4 < hda5 > [ 3.014657] ide-cd driver 5.00 [ 3.019754] ide-cd: hdc: ATAPI 40X DVD-ROM DVD-R/RAM CD-R/RW drive, 2048kB Cache [ 3.020063] Uniform CD-ROM driver Revision: 3.20 [ 3.028216] ide-cd: hdd: ATAPI 52X CD-ROM CD-R/RW drive, 2048kB Cache [ 3.034610] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 3.034721] ehci_hcd 0000:00:1d.7: PCI INT D -> GSI 23 (level, low) -> IRQ 23 [ 3.034815] ehci_hcd 0000:00:1d.7: setting latency timer to 64 [ 3.034822] ehci_hcd 0000:00:1d.7: EHCI Host Controller [ 3.035015] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1 [ 3.039039] ehci_hcd 0000:00:1d.7: debug port 1 [ 3.039114] ehci_hcd 0000:00:1d.7: cache line size of 128 is not supported [ 3.039136] ehci_hcd 0000:00:1d.7: irq 23, io mem 0xffaffc00 [ 3.049014] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00 [ 3.049284] usb usb1: configuration #1 chosen from 1 choice [ 3.049466] hub 1-0:1.0: USB hub found [ 3.049545] hub 1-0:1.0: 8 ports detected [ 3.050131] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 3.050290] uhci_hcd: USB Universal Host Controller Interface driver [ 3.050408] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 3.050487] uhci_hcd 0000:00:1d.0: setting latency timer to 64 [ 3.050492] uhci_hcd 0000:00:1d.0: UHCI Host Controller [ 3.050654] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2 [ 3.050783] uhci_hcd 0000:00:1d.0: irq 16, io base 0x0000cc00 [ 3.051049] usb usb2: configuration #1 chosen from 1 choice [ 3.051227] hub 2-0:1.0: USB hub found [ 3.051308] hub 2-0:1.0: 2 ports detected [ 3.051720] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19 [ 3.051798] uhci_hcd 0000:00:1d.1: setting latency timer to 64 [ 3.051803] uhci_hcd 0000:00:1d.1: UHCI Host Controller [ 3.051964] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3 [ 3.052114] uhci_hcd 0000:00:1d.1: irq 19, io base 0x0000d000 [ 3.052379] usb usb3: configuration #1 chosen from 1 choice [ 3.052558] hub 3-0:1.0: USB hub found [ 3.052637] hub 3-0:1.0: 2 ports detected [ 3.053068] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18 [ 3.053147] uhci_hcd 0000:00:1d.2: setting latency timer to 64 [ 3.053153] uhci_hcd 0000:00:1d.2: UHCI Host Controller [ 3.053330] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4 [ 3.053457] uhci_hcd 0000:00:1d.2: irq 18, io base 0x0000d400 [ 3.053708] usb usb4: configuration #1 chosen from 1 choice [ 3.053888] hub 4-0:1.0: USB hub found [ 3.053965] hub 4-0:1.0: 2 ports detected [ 3.054383] uhci_hcd 0000:00:1d.3: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 3.054467] uhci_hcd 0000:00:1d.3: setting latency timer to 64 [ 3.054472] uhci_hcd 0000:00:1d.3: UHCI Host Controller [ 3.054633] uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5 [ 3.054754] uhci_hcd 0000:00:1d.3: irq 16, io base 0x0000d800 [ 3.055056] usb usb5: configuration #1 chosen from 1 choice [ 3.055233] hub 5-0:1.0: USB hub found [ 3.055317] hub 5-0:1.0: 2 ports detected [ 3.055904] usbcore: registered new interface driver libusual [ 3.056183] PNP: PS/2 Controller [PNP0303:PS2K,PNP0f03:PS2M] at 0x60,0x64 irq 1,12 [ 3.059236] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 3.059316] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 3.059510] mice: PS/2 mouse device common for all mice [ 3.067493] input: PC Speaker as /class/input/input2 [ 3.075260] i2c /dev entries driver [ 3.075510] i801_smbus 0000:00:1f.3: PCI INT B -> GSI 17 (level, low) -> IRQ 17 [ 3.092604] input: AT Translated Set 2 keyboard as /class/input/input3 [ 3.102212] cpuidle: using governor ladder [ 3.105390] usbcore: registered new interface driver hiddev [ 3.105556] usbcore: registered new interface driver usbhid [ 3.105629] usbhid: v2.6:USB HID core driver [ 3.105820] Advanced Linux Sound Architecture Driver Version 1.0.18a. [ 3.107819] Intel ICH 0000:00:1f.5: PCI INT B -> GSI 17 (level, low) -> IRQ 17 [ 3.107954] Intel ICH 0000:00:1f.5: setting latency timer to 64 [ 3.423013] intel8x0_measure_ac97_clock: measured 51220 usecs [ 3.423085] intel8x0: clocking to 48000 [ 3.425114] ALSA device list: [ 3.425181] #0: Intel ICH5 with AD1985 at irq 17 [ 3.425412] oprofile: using NMI interrupt. [ 3.425567] ip_tables: (C) 2000-2006 Netfilter Core Team [ 3.425638] TCP cubic registered [ 3.425703] Initializing XFRM netlink socket [ 3.425880] NET: Registered protocol family 10 [ 3.426297] IPv6 over IPv4 tunneling driver [ 3.426615] NET: Registered protocol family 17 [ 3.426690] NET: Registered protocol family 15 [ 3.426886] p4-clockmod: P4/Xeon(TM) CPU On-Demand Clock Modulation available [ 3.426963] Using IPI Shortcut mode [ 3.427577] Freeing unused kernel memory: 320k freed [ 3.428082] Write protecting the kernel text: 3164k [ 3.428198] Write protecting the kernel read-only data: 1032k [ 3.761815] input: ImPS/2 Generic Wheel Mouse as /class/input/input4 [ 4.247697] EXT3-fs: mounted filesystem with ordered data mode. [ 4.248025] kjournald starting. Commit interval 5 seconds [ 6.704730] udevd version 127 started [ 9.733389] EXT3 FS on hda3, internal journal [ 9.842033] kjournald starting. Commit interval 5 seconds [ 9.842102] EXT3 FS on hda2, internal journal [ 9.842112] EXT3-fs: mounted filesystem with ordered data mode. [ 9.854364] kjournald starting. Commit interval 5 seconds [ 9.854428] EXT3 FS on hda1, internal journal [ 9.854436] EXT3-fs: mounted filesystem with ordered data mode. [ 11.033076] Adding 2096440k swap on /dev/hda5. Priority:-1 extents:1 across:2096440k [ 11.572917] microcode: CPU0 updated from revision 0x7 to 0xc, date = 2005-04-21 [ 26.335880] r8169: eth0: link up [ 30.485729] BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 [ 30.485743] caller is generic_get_mtrr+0x12a/0x146 [ 30.485750] Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 30.485755] Call Trace: [ 30.485765] [<c0412cc3>] ? printk+0x14/0x16 [ 30.485775] [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [ 30.485781] [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [ 30.485789] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.485796] [<c010e96f>] mtrr_ioctl+0x1aa/0x309 [ 30.485804] [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [ 30.485810] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.485816] [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [ 30.485823] [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [ 30.485830] [<c0194101>] vfs_ioctl+0x27/0x6e [ 30.485836] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.485842] [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [ 30.485850] [<c01898b0>] ? fget_light+0x40/0x130 [ 30.485856] [<c01946ee>] sys_ioctl+0x34/0x61 [ 30.485862] [<c0102c73>] sysenter_do_call+0x12/0x25 [ 30.485868] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.485874] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.485881] BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 [ 30.485887] caller is generic_get_mtrr+0x12a/0x146 [ 30.485892] Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 30.485896] Call Trace: [ 30.485902] [<c0412cc3>] ? printk+0x14/0x16 [ 30.485909] [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [ 30.485916] [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [ 30.485922] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.485928] [<c010e96f>] mtrr_ioctl+0x1aa/0x309 [ 30.485935] [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [ 30.485941] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.485947] [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [ 30.485954] [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [ 30.485960] [<c0194101>] vfs_ioctl+0x27/0x6e [ 30.485966] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.485972] [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [ 30.485978] [<c01898b0>] ? fget_light+0x40/0x130 [ 30.485985] [<c01946ee>] sys_ioctl+0x34/0x61 [ 30.485990] [<c0102c73>] sysenter_do_call+0x12/0x25 [ 30.485997] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.486004] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.486079] BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 [ 30.486086] caller is generic_get_mtrr+0x12a/0x146 [ 30.486091] Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 30.486095] Call Trace: [ 30.486101] [<c0412cc3>] ? printk+0x14/0x16 [ 30.486107] [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [ 30.486114] [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [ 30.486120] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.486125] [<c010e96f>] mtrr_ioctl+0x1aa/0x309 [ 30.486132] [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [ 30.486138] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.486144] [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [ 30.486149] [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [ 30.486155] [<c0194101>] vfs_ioctl+0x27/0x6e [ 30.486161] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.486167] [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [ 30.486173] [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e [ 30.486179] [<c01898b0>] ? fget_light+0x40/0x130 [ 30.486185] [<c01946ee>] sys_ioctl+0x34/0x61 [ 30.486190] [<c0102c73>] sysenter_do_call+0x12/0x25 [ 30.486196] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.486201] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.486207] BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 [ 30.486212] caller is generic_get_mtrr+0x12a/0x146 [ 30.486217] Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 30.486220] Call Trace: [ 30.486226] [<c0412cc3>] ? printk+0x14/0x16 [ 30.486232] [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [ 30.486239] [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [ 30.486245] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.486269] [<c010e96f>] mtrr_ioctl+0x1aa/0x309 [ 30.486277] [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [ 30.486283] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.486289] [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [ 30.486295] [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [ 30.486301] [<c0194101>] vfs_ioctl+0x27/0x6e [ 30.486307] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.486313] [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [ 30.486319] [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e [ 30.486325] [<c01898b0>] ? fget_light+0x40/0x130 [ 30.486331] [<c01946ee>] sys_ioctl+0x34/0x61 [ 30.486336] [<c0102c73>] sysenter_do_call+0x12/0x25 [ 30.486342] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.486348] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.497625] BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 [ 30.497635] caller is generic_get_mtrr+0x12a/0x146 [ 30.497641] Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 30.497645] Call Trace: [ 30.497653] [<c0412cc3>] ? printk+0x14/0x16 [ 30.497661] [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [ 30.497667] [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [ 30.497674] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.497680] [<c010e96f>] mtrr_ioctl+0x1aa/0x309 [ 30.497687] [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [ 30.497694] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.497700] [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [ 30.497706] [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [ 30.497712] [<c0194101>] vfs_ioctl+0x27/0x6e [ 30.497718] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.497724] [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [ 30.497731] [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e [ 30.497738] [<c01898b0>] ? fget_light+0x40/0x130 [ 30.497743] [<c01946ee>] sys_ioctl+0x34/0x61 [ 30.497749] [<c0102c73>] sysenter_do_call+0x12/0x25 [ 30.497755] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.497761] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.497767] BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 [ 30.497773] caller is generic_get_mtrr+0x12a/0x146 [ 30.497778] Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 30.497781] Call Trace: [ 30.497787] [<c0412cc3>] ? printk+0x14/0x16 [ 30.497794] [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [ 30.497801] [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [ 30.497807] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.497813] [<c010e96f>] mtrr_ioctl+0x1aa/0x309 [ 30.497819] [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [ 30.497825] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.497831] [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [ 30.497837] [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [ 30.497843] [<c0194101>] vfs_ioctl+0x27/0x6e [ 30.497849] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.497855] [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [ 30.497861] [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e [ 30.497867] [<c01898b0>] ? fget_light+0x40/0x130 [ 30.497873] [<c01946ee>] sys_ioctl+0x34/0x61 [ 30.497879] [<c0102c73>] sysenter_do_call+0x12/0x25 [ 30.497885] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.497890] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.510925] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.510932] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.510938] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.510943] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.511707] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 30.512242] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.512249] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.512277] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.512282] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.513125] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 30.679779] BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 [ 30.679793] caller is generic_get_mtrr+0x12a/0x146 [ 30.679800] Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 30.679805] Call Trace: [ 30.679814] [<c0412cc3>] ? printk+0x14/0x16 [ 30.679823] [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [ 30.679830] [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [ 30.679837] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.679844] [<c010e96f>] mtrr_ioctl+0x1aa/0x309 [ 30.679852] [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [ 30.679858] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.679864] [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [ 30.679870] [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [ 30.679877] [<c0194101>] vfs_ioctl+0x27/0x6e [ 30.679883] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.679889] [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [ 30.679896] [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e [ 30.679903] [<c01898b0>] ? fget_light+0x40/0x130 [ 30.679909] [<c01946ee>] sys_ioctl+0x34/0x61 [ 30.679915] [<c0102c73>] sysenter_do_call+0x12/0x25 [ 30.679921] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.679927] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.679934] BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 [ 30.679940] caller is generic_get_mtrr+0x12a/0x146 [ 30.679945] Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 30.679949] Call Trace: [ 30.679955] [<c0412cc3>] ? printk+0x14/0x16 [ 30.679961] [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [ 30.679968] [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [ 30.679974] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.679980] [<c010e96f>] mtrr_ioctl+0x1aa/0x309 [ 30.679987] [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [ 30.679993] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.679999] [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [ 30.680011] [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [ 30.680018] [<c0194101>] vfs_ioctl+0x27/0x6e [ 30.680024] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.680030] [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [ 30.680036] [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e [ 30.680042] [<c01898b0>] ? fget_light+0x40/0x130 [ 30.680048] [<c01946ee>] sys_ioctl+0x34/0x61 [ 30.680053] [<c0102c73>] sysenter_do_call+0x12/0x25 [ 30.680059] [<c0104d03>] ? is_valid_bugaddr+0x7b/0x90 [ 30.680065] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.687611] BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 [ 30.687621] caller is generic_get_mtrr+0x12a/0x146 [ 30.687627] Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 30.687631] Call Trace: [ 30.687639] [<c0412cc3>] ? printk+0x14/0x16 [ 30.687648] [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [ 30.687654] [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [ 30.687661] [<c010e351>] mtrr_add_page+0x154/0x332 [ 30.687667] [<c010e7b1>] mtrr_file_add+0x72/0x86 [ 30.687673] [<c010e9e0>] mtrr_ioctl+0x21b/0x309 [ 30.687680] [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [ 30.687687] [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [ 30.687693] [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [ 30.687700] [<c0194101>] vfs_ioctl+0x27/0x6e [ 30.687706] [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [ 30.687713] [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e [ 30.687719] [<c01898b0>] ? fget_light+0x40/0x130 [ 30.687725] [<c01946ee>] sys_ioctl+0x34/0x61 [ 30.687732] [<c0102c73>] sysenter_do_call+0x12/0x25 [ 30.687737] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.687742] BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 [ 30.687748] caller is generic_get_mtrr+0x12a/0x146 [ 30.687752] Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar 13 20:43:36 IST 2009 [ 30.687756] Call Trace: [ 30.687762] [<c0412cc3>] ? printk+0x14/0x16 [ 30.687769] [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 [ 30.687778] [<c010f0c3>] generic_get_mtrr+0x12a/0x146 [ 30.687785] [<c010e351>] mtrr_add_page+0x154/0x332 [ 30.687791] [<c010e7b1>] mtrr_file_add+0x72/0x86 [ 30.687797] [<c010e9e0>] mtrr_ioctl+0x21b/0x309 [ 30.687803] [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 [ 30.687809] [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 [ 30.687815] [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 [ 30.687821] [<c0194101>] vfs_ioctl+0x27/0x6e [ 30.687826] [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 [ 30.687832] [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e [ 30.687838] [<c01898b0>] ? fget_light+0x40/0x130 [ 30.687844] [<c01946ee>] sys_ioctl+0x34/0x61 [ 30.687850] [<c0102c73>] sysenter_do_call+0x12/0x25 [ 30.687855] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.687862] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.687867] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.693116] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.693125] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.693131] get_mtrr: cpu1 reg02 base=00000e0000 size=0000008000 write-combining [ 30.765455] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.765462] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.765468] get_mtrr: cpu1 reg02 base=00000e0000 size=0000008000 write-combining [ 30.765975] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 30.766093] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.766100] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.766105] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 30.766140] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 30.766201] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 30.766206] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 30.766211] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 30.767166] agpgart-intel 0000:00:00.0: AGP 3.0 bridge [ 30.767195] agpgart-intel 0000:00:00.0: putting AGP V3 device into 8x mode [ 30.767267] pci 0000:01:00.0: putting AGP V3 device into 8x mode [ 30.993633] [drm] Setting GART location based on new memory map [ 30.993645] [drm] Loading R200 Microcode [ 30.993684] [drm] writeback test succeeded in 1 usecs [ 36.596010] eth0: no IPv6 routers present [-- Attachment #2: config-2.6.29-rc8-tip --] [-- Type: text/plain, Size: 55179 bytes --] # # Automatically generated make config: don't edit # Linux kernel version: 2.6.29-rc8 # Fri Mar 13 19:58:31 2009 # # CONFIG_64BIT is not set CONFIG_X86_32=y # CONFIG_X86_64 is not set CONFIG_X86=y CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig" CONFIG_GENERIC_TIME=y CONFIG_GENERIC_CMOS_UPDATE=y CONFIG_CLOCKSOURCE_WATCHDOG=y CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y CONFIG_LOCKDEP_SUPPORT=y CONFIG_STACKTRACE_SUPPORT=y CONFIG_HAVE_LATENCYTOP_SUPPORT=y CONFIG_FAST_CMPXCHG_LOCAL=y CONFIG_MMU=y CONFIG_ZONE_DMA=y CONFIG_GENERIC_ISA_DMA=y CONFIG_GENERIC_IOMAP=y CONFIG_GENERIC_BUG=y CONFIG_GENERIC_HWEIGHT=y CONFIG_ARCH_MAY_HAVE_PC_FDC=y # CONFIG_RWSEM_GENERIC_SPINLOCK is not set CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y CONFIG_GENERIC_CALIBRATE_DELAY=y # CONFIG_GENERIC_TIME_VSYSCALL is not set CONFIG_ARCH_HAS_CPU_RELAX=y CONFIG_ARCH_HAS_DEFAULT_IDLE=y CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y CONFIG_HAVE_SETUP_PER_CPU_AREA=y CONFIG_HAVE_DYNAMIC_PER_CPU_AREA=y # CONFIG_HAVE_CPUMASK_OF_CPU_MAP is not set CONFIG_ARCH_HIBERNATION_POSSIBLE=y CONFIG_ARCH_SUSPEND_POSSIBLE=y # CONFIG_ZONE_DMA32 is not set CONFIG_ARCH_POPULATES_NODE_MAP=y # CONFIG_AUDIT_ARCH is not set CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y CONFIG_GENERIC_HARDIRQS=y CONFIG_GENERIC_IRQ_PROBE=y CONFIG_GENERIC_PENDING_IRQ=y CONFIG_USE_GENERIC_SMP_HELPERS=y CONFIG_X86_32_SMP=y CONFIG_X86_HT=y CONFIG_X86_TRAMPOLINE=y CONFIG_X86_32_LAZY_GS=y CONFIG_KTIME_SCALAR=y CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" # # General setup # CONFIG_EXPERIMENTAL=y CONFIG_LOCK_KERNEL=y CONFIG_INIT_ENV_ARG_LIMIT=32 CONFIG_LOCALVERSION="" # CONFIG_LOCALVERSION_AUTO is not set CONFIG_HAVE_KERNEL_GZIP=y CONFIG_HAVE_KERNEL_BZIP2=y CONFIG_HAVE_KERNEL_LZMA=y CONFIG_KERNEL_GZIP=y # CONFIG_KERNEL_BZIP2 is not set # CONFIG_KERNEL_LZMA is not set CONFIG_SWAP=y CONFIG_SYSVIPC=y CONFIG_SYSVIPC_SYSCTL=y # CONFIG_POSIX_MQUEUE is not set CONFIG_BSD_PROCESS_ACCT=y # CONFIG_BSD_PROCESS_ACCT_V3 is not set # CONFIG_TASKSTATS is not set # CONFIG_AUDIT is not set # # RCU Subsystem # CONFIG_CLASSIC_RCU=y # CONFIG_TREE_RCU is not set # CONFIG_PREEMPT_RCU is not set # CONFIG_TREE_RCU_TRACE is not set # CONFIG_PREEMPT_RCU_TRACE is not set # CONFIG_IKCONFIG is not set CONFIG_LOG_BUF_SHIFT=17 CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y # CONFIG_GROUP_SCHED is not set # CONFIG_CGROUPS is not set CONFIG_SYSFS_DEPRECATED=y CONFIG_SYSFS_DEPRECATED_V2=y CONFIG_RELAY=y CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_IPC_NS is not set # CONFIG_USER_NS is not set # CONFIG_PID_NS is not set # CONFIG_NET_NS is not set CONFIG_BLK_DEV_INITRD=y CONFIG_INITRAMFS_SOURCE="" CONFIG_RD_GZIP=y # CONFIG_RD_BZIP2 is not set # CONFIG_RD_LZMA is not set CONFIG_INITRAMFS_COMPRESSION_NONE=y # CONFIG_INITRAMFS_COMPRESSION_GZIP is not set # CONFIG_INITRAMFS_COMPRESSION_BZIP2 is not set # CONFIG_INITRAMFS_COMPRESSION_LZMA is not set CONFIG_CC_OPTIMIZE_FOR_SIZE=y CONFIG_SYSCTL=y CONFIG_ANON_INODES=y # CONFIG_EMBEDDED is not set CONFIG_UID16=y CONFIG_SYSCTL_SYSCALL=y CONFIG_KALLSYMS=y # CONFIG_KALLSYMS_ALL is not set CONFIG_KALLSYMS_EXTRA_PASS=y CONFIG_HOTPLUG=y CONFIG_PRINTK=y CONFIG_BUG=y CONFIG_ELF_CORE=y CONFIG_PCSPKR_PLATFORM=y CONFIG_BASE_FULL=y CONFIG_FUTEX=y CONFIG_EPOLL=y CONFIG_SIGNALFD=y CONFIG_TIMERFD=y CONFIG_EVENTFD=y CONFIG_SHMEM=y CONFIG_AIO=y CONFIG_HAVE_PERF_COUNTERS=y # # Performance Counters # CONFIG_PERF_COUNTERS=y CONFIG_VM_EVENT_COUNTERS=y CONFIG_PCI_QUIRKS=y CONFIG_COMPAT_BRK=y CONFIG_SLAB=y # CONFIG_SLUB is not set # CONFIG_SLOB is not set CONFIG_PROFILING=y CONFIG_TRACEPOINTS=y CONFIG_MARKERS=y CONFIG_OPROFILE=y # CONFIG_OPROFILE_IBS is not set CONFIG_HAVE_OPROFILE=y # CONFIG_KPROBES is not set CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y CONFIG_HAVE_IOREMAP_PROT=y CONFIG_HAVE_KPROBES=y CONFIG_HAVE_KRETPROBES=y CONFIG_HAVE_ARCH_TRACEHOOK=y CONFIG_HAVE_GENERIC_DMA_COHERENT=y CONFIG_SLABINFO=y CONFIG_RT_MUTEXES=y CONFIG_BASE_SMALL=0 CONFIG_MODULES=y # CONFIG_MODULE_FORCE_LOAD is not set CONFIG_MODULE_UNLOAD=y # CONFIG_MODULE_FORCE_UNLOAD is not set CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y CONFIG_STOP_MACHINE=y CONFIG_BLOCK=y # CONFIG_LBD is not set # CONFIG_BLK_DEV_BSG is not set # CONFIG_BLK_DEV_INTEGRITY is not set # # IO Schedulers # CONFIG_IOSCHED_NOOP=y CONFIG_IOSCHED_AS=y CONFIG_IOSCHED_DEADLINE=y CONFIG_IOSCHED_CFQ=y # CONFIG_DEFAULT_AS is not set # CONFIG_DEFAULT_DEADLINE is not set CONFIG_DEFAULT_CFQ=y # CONFIG_DEFAULT_NOOP is not set CONFIG_DEFAULT_IOSCHED="cfq" # CONFIG_FREEZER is not set # # Processor type and features # CONFIG_TICK_ONESHOT=y # CONFIG_NO_HZ is not set CONFIG_HIGH_RES_TIMERS=y CONFIG_GENERIC_CLOCKEVENTS_BUILD=y CONFIG_SMP=y # CONFIG_SPARSE_IRQ is not set CONFIG_X86_MPPARSE=y # CONFIG_X86_BIGSMP is not set CONFIG_X86_EXTENDED_PLATFORM=y # CONFIG_X86_ELAN is not set # CONFIG_X86_RDC321X is not set # CONFIG_X86_32_NON_STANDARD is not set CONFIG_SCHED_OMIT_FRAME_POINTER=y # CONFIG_PARAVIRT_GUEST is not set # CONFIG_MEMTEST is not set # CONFIG_M386 is not set # CONFIG_M486 is not set # CONFIG_M586 is not set # CONFIG_M586TSC is not set # CONFIG_M586MMX is not set # CONFIG_M686 is not set # CONFIG_MPENTIUMII is not set # CONFIG_MPENTIUMIII is not set # CONFIG_MPENTIUMM is not set CONFIG_MPENTIUM4=y # CONFIG_MK6 is not set # CONFIG_MK7 is not set # CONFIG_MK8 is not set # CONFIG_MCRUSOE is not set # CONFIG_MEFFICEON is not set # CONFIG_MWINCHIPC6 is not set # CONFIG_MWINCHIP3D is not set # CONFIG_MGEODEGX1 is not set # CONFIG_MGEODE_LX is not set # CONFIG_MCYRIXIII is not set # CONFIG_MVIAC3_2 is not set # CONFIG_MVIAC7 is not set # CONFIG_MPSC is not set # CONFIG_MCORE2 is not set # CONFIG_GENERIC_CPU is not set CONFIG_X86_GENERIC=y CONFIG_X86_CPU=y CONFIG_X86_L1_CACHE_BYTES=64 CONFIG_X86_INTERNODE_CACHE_BYTES=64 CONFIG_X86_CMPXCHG=y CONFIG_X86_L1_CACHE_SHIFT=7 CONFIG_X86_XADD=y CONFIG_X86_WP_WORKS_OK=y CONFIG_X86_INVLPG=y CONFIG_X86_BSWAP=y CONFIG_X86_POPAD_OK=y CONFIG_X86_INTEL_USERCOPY=y CONFIG_X86_USE_PPRO_CHECKSUM=y CONFIG_X86_TSC=y CONFIG_X86_CMOV=y CONFIG_X86_MINIMUM_CPU_FAMILY=4 CONFIG_X86_DEBUGCTLMSR=y CONFIG_CPU_SUP_INTEL=y CONFIG_CPU_SUP_CYRIX_32=y CONFIG_CPU_SUP_AMD=y CONFIG_CPU_SUP_CENTAUR_32=y CONFIG_CPU_SUP_TRANSMETA_32=y CONFIG_CPU_SUP_UMC_32=y CONFIG_X86_DS=y CONFIG_X86_PTRACE_BTS=y # CONFIG_HPET_TIMER is not set CONFIG_DMI=y # CONFIG_IOMMU_HELPER is not set # CONFIG_IOMMU_API is not set CONFIG_NR_CPUS=8 CONFIG_SCHED_SMT=y # CONFIG_SCHED_MC is not set # CONFIG_PREEMPT_NONE is not set # CONFIG_PREEMPT_VOLUNTARY is not set CONFIG_PREEMPT=y CONFIG_X86_LOCAL_APIC=y CONFIG_X86_IO_APIC=y # CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS is not set # CONFIG_X86_MCE is not set CONFIG_VM86=y # CONFIG_TOSHIBA is not set # CONFIG_I8K is not set # CONFIG_X86_REBOOTFIXUPS is not set CONFIG_MICROCODE=y CONFIG_MICROCODE_INTEL=y # CONFIG_MICROCODE_AMD is not set CONFIG_MICROCODE_OLD_INTERFACE=y CONFIG_X86_MSR=y CONFIG_X86_CPUID=y CONFIG_X86_CPU_DEBUG=m CONFIG_NOHIGHMEM=y # CONFIG_HIGHMEM4G is not set # CONFIG_HIGHMEM64G is not set CONFIG_PAGE_OFFSET=0xC0000000 # CONFIG_X86_PAE is not set # CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set CONFIG_ARCH_FLATMEM_ENABLE=y CONFIG_ARCH_SPARSEMEM_ENABLE=y CONFIG_ARCH_SELECT_MEMORY_MODEL=y CONFIG_ILLEGAL_POINTER_VALUE=0 CONFIG_SELECT_MEMORY_MODEL=y CONFIG_FLATMEM_MANUAL=y # CONFIG_DISCONTIGMEM_MANUAL is not set # CONFIG_SPARSEMEM_MANUAL is not set CONFIG_FLATMEM=y CONFIG_FLAT_NODE_MEM_MAP=y CONFIG_SPARSEMEM_STATIC=y CONFIG_PAGEFLAGS_EXTENDED=y CONFIG_SPLIT_PTLOCK_CPUS=4 # CONFIG_PHYS_ADDR_T_64BIT is not set CONFIG_ZONE_DMA_FLAG=1 CONFIG_BOUNCE=y CONFIG_VIRT_TO_BUS=y CONFIG_UNEVICTABLE_LRU=y # CONFIG_X86_CHECK_BIOS_CORRUPTION is not set CONFIG_X86_RESERVE_LOW_64K=y # CONFIG_MATH_EMULATION is not set CONFIG_MTRR=y CONFIG_MTRR_SANITIZER=y CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0 CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1 CONFIG_X86_PAT=y # CONFIG_EFI is not set # CONFIG_SECCOMP is not set # CONFIG_CC_STACKPROTECTOR is not set # CONFIG_HZ_100 is not set # CONFIG_HZ_250 is not set # CONFIG_HZ_300 is not set CONFIG_HZ_1000=y CONFIG_HZ=1000 CONFIG_SCHED_HRTICK=y # CONFIG_KEXEC is not set CONFIG_PHYSICAL_START=0x100000 # CONFIG_RELOCATABLE is not set CONFIG_PHYSICAL_ALIGN=0x100000 # CONFIG_HOTPLUG_CPU is not set CONFIG_COMPAT_VDSO=y # CONFIG_CMDLINE_BOOL is not set # # Power management and ACPI options # CONFIG_PM=y # CONFIG_PM_DEBUG is not set # CONFIG_SUSPEND is not set # CONFIG_HIBERNATION is not set CONFIG_ACPI=y CONFIG_ACPI_PROCFS=y CONFIG_ACPI_PROCFS_POWER=y CONFIG_ACPI_SYSFS_POWER=y CONFIG_ACPI_PROC_EVENT=y # CONFIG_ACPI_AC is not set # CONFIG_ACPI_BATTERY is not set CONFIG_ACPI_BUTTON=y CONFIG_ACPI_FAN=y CONFIG_ACPI_DOCK=y CONFIG_ACPI_PROCESSOR=y CONFIG_ACPI_THERMAL=y # CONFIG_ACPI_CUSTOM_DSDT is not set CONFIG_ACPI_BLACKLIST_YEAR=0 # CONFIG_ACPI_DEBUG is not set # CONFIG_ACPI_PCI_SLOT is not set CONFIG_X86_PM_TIMER=y CONFIG_ACPI_CONTAINER=y CONFIG_ACPI_SBS=y # # CPU Frequency scaling # CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_TABLE=y # CONFIG_CPU_FREQ_DEBUG is not set CONFIG_CPU_FREQ_STAT=y CONFIG_CPU_FREQ_STAT_DETAILS=y # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y # CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set CONFIG_CPU_FREQ_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_POWERSAVE=y CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_ONDEMAND=y CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y # # CPUFreq processor drivers # # CONFIG_X86_ACPI_CPUFREQ is not set # CONFIG_X86_POWERNOW_K6 is not set # CONFIG_X86_POWERNOW_K7 is not set # CONFIG_X86_POWERNOW_K8 is not set # CONFIG_X86_GX_SUSPMOD is not set CONFIG_X86_SPEEDSTEP_CENTRINO=y CONFIG_X86_SPEEDSTEP_CENTRINO_TABLE=y # CONFIG_X86_SPEEDSTEP_ICH is not set # CONFIG_X86_SPEEDSTEP_SMI is not set CONFIG_X86_P4_CLOCKMOD=y # CONFIG_X86_CPUFREQ_NFORCE2 is not set # CONFIG_X86_LONGRUN is not set # CONFIG_X86_LONGHAUL is not set # CONFIG_X86_E_POWERSAVER is not set # # shared options # CONFIG_X86_SPEEDSTEP_LIB=y CONFIG_CPU_IDLE=y CONFIG_CPU_IDLE_GOV_LADDER=y # # Bus options (PCI etc.) # CONFIG_PCI=y # CONFIG_PCI_GOBIOS is not set # CONFIG_PCI_GOMMCONFIG is not set # CONFIG_PCI_GODIRECT is not set # CONFIG_PCI_GOOLPC is not set CONFIG_PCI_GOANY=y CONFIG_PCI_BIOS=y CONFIG_PCI_DIRECT=y CONFIG_PCI_MMCONFIG=y CONFIG_PCI_DOMAINS=y CONFIG_PCIEPORTBUS=y # CONFIG_HOTPLUG_PCI_PCIE is not set CONFIG_PCIEAER=y # CONFIG_PCIEASPM is not set CONFIG_ARCH_SUPPORTS_MSI=y # CONFIG_PCI_MSI is not set CONFIG_PCI_LEGACY=y # CONFIG_PCI_DEBUG is not set # CONFIG_PCI_STUB is not set CONFIG_HT_IRQ=y CONFIG_ISA_DMA_API=y # CONFIG_ISA is not set # CONFIG_MCA is not set # CONFIG_SCx200 is not set # CONFIG_OLPC is not set # CONFIG_PCCARD is not set CONFIG_HOTPLUG_PCI=y # CONFIG_HOTPLUG_PCI_FAKE is not set # CONFIG_HOTPLUG_PCI_COMPAQ is not set # CONFIG_HOTPLUG_PCI_IBM is not set CONFIG_HOTPLUG_PCI_ACPI=y # CONFIG_HOTPLUG_PCI_ACPI_IBM is not set # CONFIG_HOTPLUG_PCI_CPCI is not set # CONFIG_HOTPLUG_PCI_SHPC is not set # # Executable file formats / Emulations # CONFIG_BINFMT_ELF=y # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set CONFIG_HAVE_AOUT=y # CONFIG_BINFMT_AOUT is not set CONFIG_BINFMT_MISC=y CONFIG_HAVE_ATOMIC_IOMAP=y CONFIG_NET=y # # Networking options # CONFIG_COMPAT_NET_DEV_OPS=y CONFIG_PACKET=y CONFIG_PACKET_MMAP=y CONFIG_UNIX=y CONFIG_XFRM=y CONFIG_XFRM_USER=y # CONFIG_XFRM_SUB_POLICY is not set # CONFIG_XFRM_MIGRATE is not set # CONFIG_XFRM_STATISTICS is not set CONFIG_NET_KEY=y # CONFIG_NET_KEY_MIGRATE is not set CONFIG_INET=y CONFIG_IP_MULTICAST=y # CONFIG_IP_ADVANCED_ROUTER is not set CONFIG_IP_FIB_HASH=y # CONFIG_IP_PNP is not set # CONFIG_NET_IPIP is not set # CONFIG_NET_IPGRE is not set # CONFIG_IP_MROUTE is not set # CONFIG_ARPD is not set # CONFIG_SYN_COOKIES is not set # CONFIG_INET_AH is not set # CONFIG_INET_ESP is not set # CONFIG_INET_IPCOMP is not set # CONFIG_INET_XFRM_TUNNEL is not set CONFIG_INET_TUNNEL=y # CONFIG_INET_XFRM_MODE_TRANSPORT is not set # CONFIG_INET_XFRM_MODE_TUNNEL is not set # CONFIG_INET_XFRM_MODE_BEET is not set # CONFIG_INET_LRO is not set # CONFIG_INET_DIAG is not set # CONFIG_TCP_CONG_ADVANCED is not set CONFIG_TCP_CONG_CUBIC=y CONFIG_DEFAULT_TCP_CONG="cubic" # CONFIG_TCP_MD5SIG is not set CONFIG_IPV6=y # CONFIG_IPV6_PRIVACY is not set # CONFIG_IPV6_ROUTER_PREF is not set # CONFIG_IPV6_OPTIMISTIC_DAD is not set # CONFIG_INET6_AH is not set # CONFIG_INET6_ESP is not set # CONFIG_INET6_IPCOMP is not set # CONFIG_IPV6_MIP6 is not set # CONFIG_INET6_XFRM_TUNNEL is not set # CONFIG_INET6_TUNNEL is not set CONFIG_INET6_XFRM_MODE_TRANSPORT=y CONFIG_INET6_XFRM_MODE_TUNNEL=y CONFIG_INET6_XFRM_MODE_BEET=y # CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set CONFIG_IPV6_SIT=y CONFIG_IPV6_NDISC_NODETYPE=y # CONFIG_IPV6_TUNNEL is not set # CONFIG_IPV6_MULTIPLE_TABLES is not set # CONFIG_IPV6_MROUTE is not set # CONFIG_NETWORK_SECMARK is not set CONFIG_NETFILTER=y # CONFIG_NETFILTER_DEBUG is not set CONFIG_NETFILTER_ADVANCED=y # # Core Netfilter Configuration # # CONFIG_NETFILTER_NETLINK_QUEUE is not set # CONFIG_NETFILTER_NETLINK_LOG is not set # CONFIG_NF_CONNTRACK is not set CONFIG_NETFILTER_XTABLES=y # CONFIG_NETFILTER_XT_TARGET_CLASSIFY is not set # CONFIG_NETFILTER_XT_TARGET_MARK is not set # CONFIG_NETFILTER_XT_TARGET_NFLOG is not set # CONFIG_NETFILTER_XT_TARGET_NFQUEUE is not set # CONFIG_NETFILTER_XT_TARGET_RATEEST is not set # CONFIG_NETFILTER_XT_TARGET_TCPMSS is not set # CONFIG_NETFILTER_XT_MATCH_COMMENT is not set # CONFIG_NETFILTER_XT_MATCH_DCCP is not set # CONFIG_NETFILTER_XT_MATCH_DSCP is not set # CONFIG_NETFILTER_XT_MATCH_ESP is not set # CONFIG_NETFILTER_XT_MATCH_HASHLIMIT is not set # CONFIG_NETFILTER_XT_MATCH_IPRANGE is not set # CONFIG_NETFILTER_XT_MATCH_LENGTH is not set # CONFIG_NETFILTER_XT_MATCH_LIMIT is not set # CONFIG_NETFILTER_XT_MATCH_MAC is not set # CONFIG_NETFILTER_XT_MATCH_MARK is not set # CONFIG_NETFILTER_XT_MATCH_MULTIPORT is not set # CONFIG_NETFILTER_XT_MATCH_OWNER is not set # CONFIG_NETFILTER_XT_MATCH_POLICY is not set # CONFIG_NETFILTER_XT_MATCH_PKTTYPE is not set # CONFIG_NETFILTER_XT_MATCH_QUOTA is not set # CONFIG_NETFILTER_XT_MATCH_RATEEST is not set # CONFIG_NETFILTER_XT_MATCH_REALM is not set # CONFIG_NETFILTER_XT_MATCH_RECENT is not set # CONFIG_NETFILTER_XT_MATCH_SCTP is not set # CONFIG_NETFILTER_XT_MATCH_STATISTIC is not set # CONFIG_NETFILTER_XT_MATCH_STRING is not set # CONFIG_NETFILTER_XT_MATCH_TCPMSS is not set # CONFIG_NETFILTER_XT_MATCH_TIME is not set # CONFIG_NETFILTER_XT_MATCH_U32 is not set # CONFIG_IP_VS is not set # # IP: Netfilter Configuration # # CONFIG_NF_DEFRAG_IPV4 is not set # CONFIG_IP_NF_QUEUE is not set CONFIG_IP_NF_IPTABLES=y # CONFIG_IP_NF_MATCH_ADDRTYPE is not set # CONFIG_IP_NF_MATCH_AH is not set # CONFIG_IP_NF_MATCH_ECN is not set # CONFIG_IP_NF_MATCH_TTL is not set # CONFIG_IP_NF_FILTER is not set # CONFIG_IP_NF_TARGET_LOG is not set # CONFIG_IP_NF_TARGET_ULOG is not set # CONFIG_IP_NF_MANGLE is not set # CONFIG_IP_NF_RAW is not set # CONFIG_IP_NF_ARPTABLES is not set # # IPv6: Netfilter Configuration # # CONFIG_IP6_NF_QUEUE is not set # CONFIG_IP6_NF_IPTABLES is not set # CONFIG_IP_DCCP is not set # CONFIG_IP_SCTP is not set # CONFIG_TIPC is not set # CONFIG_ATM is not set # CONFIG_BRIDGE is not set # CONFIG_NET_DSA is not set # CONFIG_VLAN_8021Q is not set # CONFIG_DECNET is not set # CONFIG_LLC2 is not set # CONFIG_IPX is not set # CONFIG_ATALK is not set # CONFIG_X25 is not set # CONFIG_LAPB is not set # CONFIG_ECONET is not set # CONFIG_WAN_ROUTER is not set # CONFIG_NET_SCHED is not set # CONFIG_DCB is not set # # Network testing # # CONFIG_NET_PKTGEN is not set # CONFIG_HAMRADIO is not set # CONFIG_CAN is not set # CONFIG_IRDA is not set # CONFIG_BT is not set # CONFIG_AF_RXRPC is not set # CONFIG_PHONET is not set CONFIG_WIRELESS=y # CONFIG_CFG80211 is not set CONFIG_WIRELESS_OLD_REGULATORY=y # CONFIG_WIRELESS_EXT is not set # CONFIG_LIB80211 is not set # CONFIG_MAC80211 is not set # CONFIG_WIMAX is not set # CONFIG_RFKILL is not set # # Device Drivers # # # Generic Driver Options # CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_STANDALONE=y CONFIG_PREVENT_FIRMWARE_BUILD=y CONFIG_FW_LOADER=y CONFIG_FIRMWARE_IN_KERNEL=y CONFIG_EXTRA_FIRMWARE="" # CONFIG_DEBUG_DRIVER is not set # CONFIG_DEBUG_DEVRES is not set # CONFIG_SYS_HYPERVISOR is not set CONFIG_CONNECTOR=y CONFIG_PROC_EVENTS=y # CONFIG_MTD is not set # CONFIG_PARPORT is not set CONFIG_PNP=y CONFIG_PNP_DEBUG_MESSAGES=y # # Protocols # CONFIG_PNPACPI=y CONFIG_BLK_DEV=y # CONFIG_BLK_DEV_FD is not set # CONFIG_BLK_CPQ_DA is not set # CONFIG_BLK_CPQ_CISS_DA is not set # CONFIG_BLK_DEV_DAC960 is not set # CONFIG_BLK_DEV_UMEM is not set # CONFIG_BLK_DEV_COW_COMMON is not set CONFIG_BLK_DEV_LOOP=y # CONFIG_BLK_DEV_CRYPTOLOOP is not set # CONFIG_BLK_DEV_NBD is not set # CONFIG_BLK_DEV_SX8 is not set # CONFIG_BLK_DEV_UB is not set # CONFIG_BLK_DEV_RAM is not set CONFIG_CDROM_PKTCDVD=y CONFIG_CDROM_PKTCDVD_BUFFERS=8 # CONFIG_CDROM_PKTCDVD_WCACHE is not set # CONFIG_ATA_OVER_ETH is not set # CONFIG_BLK_DEV_HD is not set CONFIG_MISC_DEVICES=y # CONFIG_IBM_ASM is not set # CONFIG_PHANTOM is not set # CONFIG_SGI_IOC4 is not set # CONFIG_TIFM_CORE is not set # CONFIG_ICS932S401 is not set # CONFIG_ENCLOSURE_SERVICES is not set # CONFIG_HP_ILO is not set # CONFIG_C2PORT is not set # # EEPROM support # # CONFIG_EEPROM_AT24 is not set # CONFIG_EEPROM_AT25 is not set # CONFIG_EEPROM_LEGACY is not set # CONFIG_EEPROM_93CX6 is not set CONFIG_HAVE_IDE=y CONFIG_IDE=y # # Please see Documentation/ide/ide.txt for help/info on IDE drives # CONFIG_IDE_TIMINGS=y CONFIG_IDE_ATAPI=y # CONFIG_BLK_DEV_IDE_SATA is not set CONFIG_IDE_GD=y CONFIG_IDE_GD_ATA=y # CONFIG_IDE_GD_ATAPI is not set CONFIG_BLK_DEV_IDECD=y CONFIG_BLK_DEV_IDECD_VERBOSE_ERRORS=y # CONFIG_BLK_DEV_IDETAPE is not set # CONFIG_BLK_DEV_IDEACPI is not set CONFIG_IDE_TASK_IOCTL=y CONFIG_IDE_PROC_FS=y # # IDE chipset support/bugfixes # CONFIG_IDE_GENERIC=y # CONFIG_BLK_DEV_PLATFORM is not set CONFIG_BLK_DEV_CMD640=y CONFIG_BLK_DEV_CMD640_ENHANCED=y # CONFIG_BLK_DEV_IDEPNP is not set CONFIG_BLK_DEV_IDEDMA_SFF=y # # PCI IDE chipsets support # CONFIG_BLK_DEV_IDEPCI=y CONFIG_IDEPCI_PCIBUS_ORDER=y # CONFIG_BLK_DEV_OFFBOARD is not set CONFIG_BLK_DEV_GENERIC=y # CONFIG_BLK_DEV_OPTI621 is not set CONFIG_BLK_DEV_RZ1000=y CONFIG_BLK_DEV_IDEDMA_PCI=y # CONFIG_BLK_DEV_AEC62XX is not set CONFIG_BLK_DEV_ALI15X3=y # CONFIG_BLK_DEV_AMD74XX is not set # CONFIG_BLK_DEV_ATIIXP is not set CONFIG_BLK_DEV_CMD64X=y # CONFIG_BLK_DEV_TRIFLEX is not set # CONFIG_BLK_DEV_CS5520 is not set # CONFIG_BLK_DEV_CS5530 is not set # CONFIG_BLK_DEV_CS5535 is not set # CONFIG_BLK_DEV_CS5536 is not set # CONFIG_BLK_DEV_HPT366 is not set # CONFIG_BLK_DEV_JMICRON is not set # CONFIG_BLK_DEV_SC1200 is not set CONFIG_BLK_DEV_PIIX=y # CONFIG_BLK_DEV_IT8172 is not set # CONFIG_BLK_DEV_IT8213 is not set # CONFIG_BLK_DEV_IT821X is not set # CONFIG_BLK_DEV_NS87415 is not set # CONFIG_BLK_DEV_PDC202XX_OLD is not set # CONFIG_BLK_DEV_PDC202XX_NEW is not set # CONFIG_BLK_DEV_SVWKS is not set # CONFIG_BLK_DEV_SIIMAGE is not set # CONFIG_BLK_DEV_SIS5513 is not set # CONFIG_BLK_DEV_SLC90E66 is not set # CONFIG_BLK_DEV_TRM290 is not set # CONFIG_BLK_DEV_VIA82CXXX is not set # CONFIG_BLK_DEV_TC86C001 is not set CONFIG_BLK_DEV_IDEDMA=y # # SCSI device support # # CONFIG_RAID_ATTRS is not set # CONFIG_SCSI is not set # CONFIG_SCSI_DMA is not set # CONFIG_SCSI_NETLINK is not set # CONFIG_ATA is not set # CONFIG_MD is not set # CONFIG_FUSION is not set # # IEEE 1394 (FireWire) support # # # Enable only one of the two stacks, unless you know what you are doing # # CONFIG_FIREWIRE is not set # CONFIG_IEEE1394 is not set # CONFIG_I2O is not set # CONFIG_MACINTOSH_DRIVERS is not set CONFIG_NETDEVICES=y # CONFIG_DUMMY is not set # CONFIG_BONDING is not set # CONFIG_MACVLAN is not set # CONFIG_EQUALIZER is not set # CONFIG_TUN is not set # CONFIG_VETH is not set # CONFIG_NET_SB1000 is not set # CONFIG_ARCNET is not set CONFIG_PHYLIB=y # # MII PHY device drivers # # CONFIG_MARVELL_PHY is not set # CONFIG_DAVICOM_PHY is not set # CONFIG_QSEMI_PHY is not set CONFIG_LXT_PHY=y # CONFIG_CICADA_PHY is not set # CONFIG_VITESSE_PHY is not set # CONFIG_SMSC_PHY is not set # CONFIG_BROADCOM_PHY is not set # CONFIG_ICPLUS_PHY is not set # CONFIG_REALTEK_PHY is not set # CONFIG_NATIONAL_PHY is not set # CONFIG_STE10XP is not set # CONFIG_LSI_ET1011C_PHY is not set # CONFIG_FIXED_PHY is not set # CONFIG_MDIO_BITBANG is not set CONFIG_NET_ETHERNET=y CONFIG_MII=y # CONFIG_HAPPYMEAL is not set # CONFIG_SUNGEM is not set # CONFIG_CASSINI is not set # CONFIG_NET_VENDOR_3COM is not set # CONFIG_ENC28J60 is not set # CONFIG_NET_TULIP is not set # CONFIG_HP100 is not set # CONFIG_IBM_NEW_EMAC_ZMII is not set # CONFIG_IBM_NEW_EMAC_RGMII is not set # CONFIG_IBM_NEW_EMAC_TAH is not set # CONFIG_IBM_NEW_EMAC_EMAC4 is not set # CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set # CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set # CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set CONFIG_NET_PCI=y # CONFIG_PCNET32 is not set # CONFIG_AMD8111_ETH is not set # CONFIG_ADAPTEC_STARFIRE is not set # CONFIG_B44 is not set # CONFIG_FORCEDETH is not set CONFIG_E100=y CONFIG_FEALNX=y # CONFIG_NATSEMI is not set # CONFIG_NE2K_PCI is not set # CONFIG_8139CP is not set CONFIG_8139TOO=y # CONFIG_8139TOO_PIO is not set CONFIG_8139TOO_TUNE_TWISTER=y CONFIG_8139TOO_8129=y # CONFIG_8139_OLD_RX_RESET is not set # CONFIG_R6040 is not set # CONFIG_SIS900 is not set # CONFIG_EPIC100 is not set # CONFIG_SMSC9420 is not set # CONFIG_SUNDANCE is not set # CONFIG_TLAN is not set # CONFIG_VIA_RHINE is not set # CONFIG_SC92031 is not set # CONFIG_ATL2 is not set CONFIG_NETDEV_1000=y # CONFIG_ACENIC is not set # CONFIG_DL2K is not set # CONFIG_E1000 is not set # CONFIG_E1000E is not set # CONFIG_IP1000 is not set # CONFIG_IGB is not set # CONFIG_NS83820 is not set # CONFIG_HAMACHI is not set # CONFIG_YELLOWFIN is not set CONFIG_R8169=y # CONFIG_SIS190 is not set # CONFIG_SKGE is not set # CONFIG_SKY2 is not set # CONFIG_VIA_VELOCITY is not set # CONFIG_TIGON3 is not set # CONFIG_BNX2 is not set # CONFIG_QLA3XXX is not set # CONFIG_ATL1 is not set # CONFIG_ATL1E is not set # CONFIG_ATL1C is not set # CONFIG_JME is not set # CONFIG_NETDEV_10000 is not set # CONFIG_TR is not set # # Wireless LAN # # CONFIG_WLAN_PRE80211 is not set # CONFIG_WLAN_80211 is not set # CONFIG_IWLWIFI_LEDS is not set # # Enable WiMAX (Networking options) to see the WiMAX drivers # # # USB Network Adapters # # CONFIG_USB_CATC is not set # CONFIG_USB_KAWETH is not set # CONFIG_USB_PEGASUS is not set # CONFIG_USB_RTL8150 is not set # CONFIG_USB_USBNET is not set # CONFIG_WAN is not set # CONFIG_FDDI is not set # CONFIG_HIPPI is not set # CONFIG_PPP is not set # CONFIG_SLIP is not set # CONFIG_NETCONSOLE is not set # CONFIG_NETPOLL is not set # CONFIG_NET_POLL_CONTROLLER is not set # CONFIG_ISDN is not set # CONFIG_PHONE is not set # # Input device support # CONFIG_INPUT=y # CONFIG_INPUT_FF_MEMLESS is not set # CONFIG_INPUT_POLLDEV is not set # # Userland interfaces # CONFIG_INPUT_MOUSEDEV=y # CONFIG_INPUT_MOUSEDEV_PSAUX is not set CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024 CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768 # CONFIG_INPUT_JOYDEV is not set CONFIG_INPUT_EVDEV=y # CONFIG_INPUT_EVBUG is not set # # Input Device Drivers # CONFIG_INPUT_KEYBOARD=y CONFIG_KEYBOARD_ATKBD=y # CONFIG_KEYBOARD_SUNKBD is not set # CONFIG_KEYBOARD_LKKBD is not set # CONFIG_KEYBOARD_XTKBD is not set # CONFIG_KEYBOARD_NEWTON is not set # CONFIG_KEYBOARD_STOWAWAY is not set CONFIG_INPUT_MOUSE=y CONFIG_MOUSE_PS2=y CONFIG_MOUSE_PS2_ALPS=y CONFIG_MOUSE_PS2_LOGIPS2PP=y CONFIG_MOUSE_PS2_SYNAPTICS=y CONFIG_MOUSE_PS2_LIFEBOOK=y CONFIG_MOUSE_PS2_TRACKPOINT=y # CONFIG_MOUSE_PS2_ELANTECH is not set # CONFIG_MOUSE_PS2_TOUCHKIT is not set # CONFIG_MOUSE_SERIAL is not set # CONFIG_MOUSE_APPLETOUCH is not set # CONFIG_MOUSE_BCM5974 is not set # CONFIG_MOUSE_VSXXXAA is not set # CONFIG_INPUT_JOYSTICK is not set # CONFIG_INPUT_TABLET is not set # CONFIG_INPUT_TOUCHSCREEN is not set CONFIG_INPUT_MISC=y CONFIG_INPUT_PCSPKR=y # CONFIG_INPUT_APANEL is not set # CONFIG_INPUT_WISTRON_BTNS is not set # CONFIG_INPUT_ATLAS_BTNS is not set # CONFIG_INPUT_ATI_REMOTE is not set # CONFIG_INPUT_ATI_REMOTE2 is not set # CONFIG_INPUT_KEYSPAN_REMOTE is not set # CONFIG_INPUT_POWERMATE is not set # CONFIG_INPUT_YEALINK is not set # CONFIG_INPUT_CM109 is not set CONFIG_INPUT_UINPUT=y # # Hardware I/O ports # CONFIG_SERIO=y CONFIG_SERIO_I8042=y CONFIG_SERIO_SERPORT=y # CONFIG_SERIO_CT82C710 is not set # CONFIG_SERIO_PCIPS2 is not set CONFIG_SERIO_LIBPS2=y # CONFIG_SERIO_RAW is not set # CONFIG_GAMEPORT is not set # # Character devices # CONFIG_VT=y CONFIG_CONSOLE_TRANSLATIONS=y CONFIG_VT_CONSOLE=y CONFIG_HW_CONSOLE=y CONFIG_VT_HW_CONSOLE_BINDING=y CONFIG_DEVKMEM=y CONFIG_SERIAL_NONSTANDARD=y # CONFIG_COMPUTONE is not set # CONFIG_ROCKETPORT is not set # CONFIG_CYCLADES is not set # CONFIG_DIGIEPCA is not set # CONFIG_MOXA_INTELLIO is not set # CONFIG_MOXA_SMARTIO is not set # CONFIG_ISI is not set # CONFIG_SYNCLINK is not set # CONFIG_SYNCLINKMP is not set # CONFIG_SYNCLINK_GT is not set # CONFIG_N_HDLC is not set # CONFIG_RISCOM8 is not set # CONFIG_SPECIALIX is not set # CONFIG_SX is not set # CONFIG_RIO is not set # CONFIG_STALDRV is not set # CONFIG_NOZOMI is not set # # Serial drivers # CONFIG_SERIAL_8250=y # CONFIG_SERIAL_8250_CONSOLE is not set CONFIG_FIX_EARLYCON_MEM=y CONFIG_SERIAL_8250_PCI=y CONFIG_SERIAL_8250_PNP=y CONFIG_SERIAL_8250_NR_UARTS=32 CONFIG_SERIAL_8250_RUNTIME_UARTS=4 CONFIG_SERIAL_8250_EXTENDED=y CONFIG_SERIAL_8250_MANY_PORTS=y CONFIG_SERIAL_8250_SHARE_IRQ=y CONFIG_SERIAL_8250_DETECT_IRQ=y # CONFIG_SERIAL_8250_RSA is not set # # Non-8250 serial port support # CONFIG_SERIAL_CORE=y # CONFIG_SERIAL_JSM is not set CONFIG_UNIX98_PTYS=y # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set # CONFIG_LEGACY_PTYS is not set # CONFIG_IPMI_HANDLER is not set CONFIG_HW_RANDOM=y CONFIG_HW_RANDOM_INTEL=y # CONFIG_HW_RANDOM_AMD is not set # CONFIG_HW_RANDOM_GEODE is not set # CONFIG_HW_RANDOM_VIA is not set CONFIG_NVRAM=y CONFIG_RTC=y # CONFIG_R3964 is not set # CONFIG_APPLICOM is not set # CONFIG_SONYPI is not set # CONFIG_MWAVE is not set # CONFIG_PC8736x_GPIO is not set # CONFIG_NSC_GPIO is not set # CONFIG_CS5535_GPIO is not set # CONFIG_RAW_DRIVER is not set # CONFIG_HPET is not set # CONFIG_HANGCHECK_TIMER is not set # CONFIG_TCG_TPM is not set # CONFIG_TELCLOCK is not set CONFIG_DEVPORT=y CONFIG_I2C=y CONFIG_I2C_BOARDINFO=y CONFIG_I2C_CHARDEV=y CONFIG_I2C_HELPER_AUTO=y CONFIG_I2C_ALGOBIT=y # # I2C Hardware Bus support # # # PC SMBus host controller drivers # # CONFIG_I2C_ALI1535 is not set # CONFIG_I2C_ALI1563 is not set # CONFIG_I2C_ALI15X3 is not set # CONFIG_I2C_AMD756 is not set # CONFIG_I2C_AMD8111 is not set CONFIG_I2C_I801=y # CONFIG_I2C_ISCH is not set CONFIG_I2C_PIIX4=y # CONFIG_I2C_NFORCE2 is not set # CONFIG_I2C_SIS5595 is not set # CONFIG_I2C_SIS630 is not set # CONFIG_I2C_SIS96X is not set # CONFIG_I2C_VIA is not set # CONFIG_I2C_VIAPRO is not set # # I2C system bus drivers (mostly embedded / system-on-chip) # # CONFIG_I2C_OCORES is not set # CONFIG_I2C_SIMTEC is not set # # External I2C/SMBus adapter drivers # # CONFIG_I2C_PARPORT_LIGHT is not set # CONFIG_I2C_TAOS_EVM is not set # CONFIG_I2C_TINY_USB is not set # # Graphics adapter I2C/DDC channel drivers # # CONFIG_I2C_VOODOO3 is not set # # Other I2C/SMBus bus drivers # # CONFIG_I2C_PCA_PLATFORM is not set # CONFIG_I2C_STUB is not set # CONFIG_SCx200_ACB is not set # # Miscellaneous I2C Chip support # # CONFIG_DS1682 is not set # CONFIG_SENSORS_PCF8574 is not set # CONFIG_PCF8575 is not set # CONFIG_SENSORS_PCA9539 is not set # CONFIG_SENSORS_PCF8591 is not set # CONFIG_SENSORS_MAX6875 is not set # CONFIG_SENSORS_TSL2550 is not set # CONFIG_I2C_DEBUG_CORE is not set # CONFIG_I2C_DEBUG_ALGO is not set # CONFIG_I2C_DEBUG_BUS is not set # CONFIG_I2C_DEBUG_CHIP is not set CONFIG_SPI=y # CONFIG_SPI_DEBUG is not set CONFIG_SPI_MASTER=y # # SPI Master Controller Drivers # CONFIG_SPI_BITBANG=y # # SPI Protocol Masters # CONFIG_SPI_SPIDEV=y # CONFIG_SPI_TLE62X0 is not set CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y # CONFIG_GPIOLIB is not set # CONFIG_W1 is not set CONFIG_POWER_SUPPLY=y # CONFIG_POWER_SUPPLY_DEBUG is not set # CONFIG_PDA_POWER is not set # CONFIG_BATTERY_DS2760 is not set # CONFIG_BATTERY_BQ27x00 is not set CONFIG_HWMON=y CONFIG_HWMON_VID=y # CONFIG_SENSORS_ABITUGURU is not set # CONFIG_SENSORS_ABITUGURU3 is not set # CONFIG_SENSORS_AD7414 is not set # CONFIG_SENSORS_AD7418 is not set # CONFIG_SENSORS_ADCXX is not set # CONFIG_SENSORS_ADM1021 is not set # CONFIG_SENSORS_ADM1025 is not set # CONFIG_SENSORS_ADM1026 is not set # CONFIG_SENSORS_ADM1029 is not set # CONFIG_SENSORS_ADM1031 is not set # CONFIG_SENSORS_ADM9240 is not set # CONFIG_SENSORS_ADT7462 is not set # CONFIG_SENSORS_ADT7470 is not set # CONFIG_SENSORS_ADT7473 is not set # CONFIG_SENSORS_ADT7475 is not set # CONFIG_SENSORS_K8TEMP is not set # CONFIG_SENSORS_ASB100 is not set CONFIG_SENSORS_ATXP1=y # CONFIG_SENSORS_DS1621 is not set # CONFIG_SENSORS_I5K_AMB is not set # CONFIG_SENSORS_F71805F is not set # CONFIG_SENSORS_F71882FG is not set # CONFIG_SENSORS_F75375S is not set # CONFIG_SENSORS_FSCHER is not set # CONFIG_SENSORS_FSCPOS is not set # CONFIG_SENSORS_FSCHMD is not set # CONFIG_SENSORS_GL518SM is not set # CONFIG_SENSORS_GL520SM is not set CONFIG_SENSORS_CORETEMP=y # CONFIG_SENSORS_IT87 is not set # CONFIG_SENSORS_LM63 is not set # CONFIG_SENSORS_LM70 is not set # CONFIG_SENSORS_LM75 is not set # CONFIG_SENSORS_LM77 is not set # CONFIG_SENSORS_LM78 is not set # CONFIG_SENSORS_LM80 is not set # CONFIG_SENSORS_LM83 is not set CONFIG_SENSORS_LM85=y # CONFIG_SENSORS_LM87 is not set # CONFIG_SENSORS_LM90 is not set # CONFIG_SENSORS_LM92 is not set # CONFIG_SENSORS_LM93 is not set # CONFIG_SENSORS_LTC4245 is not set # CONFIG_SENSORS_MAX1111 is not set # CONFIG_SENSORS_MAX1619 is not set # CONFIG_SENSORS_MAX6650 is not set # CONFIG_SENSORS_PC87360 is not set # CONFIG_SENSORS_PC87427 is not set # CONFIG_SENSORS_SIS5595 is not set # CONFIG_SENSORS_DME1737 is not set # CONFIG_SENSORS_SMSC47M1 is not set # CONFIG_SENSORS_SMSC47M192 is not set # CONFIG_SENSORS_SMSC47B397 is not set # CONFIG_SENSORS_ADS7828 is not set # CONFIG_SENSORS_THMC50 is not set # CONFIG_SENSORS_VIA686A is not set # CONFIG_SENSORS_VT1211 is not set # CONFIG_SENSORS_VT8231 is not set # CONFIG_SENSORS_W83781D is not set # CONFIG_SENSORS_W83791D is not set # CONFIG_SENSORS_W83792D is not set # CONFIG_SENSORS_W83793 is not set # CONFIG_SENSORS_W83L785TS is not set # CONFIG_SENSORS_W83L786NG is not set # CONFIG_SENSORS_W83627HF is not set # CONFIG_SENSORS_W83627EHF is not set # CONFIG_SENSORS_HDAPS is not set # CONFIG_SENSORS_LIS3LV02D is not set # CONFIG_SENSORS_APPLESMC is not set # CONFIG_HWMON_DEBUG_CHIP is not set CONFIG_THERMAL=y # CONFIG_THERMAL_HWMON is not set CONFIG_WATCHDOG=y # CONFIG_WATCHDOG_NOWAYOUT is not set # # Watchdog Device Drivers # # CONFIG_SOFT_WATCHDOG is not set # CONFIG_ACQUIRE_WDT is not set # CONFIG_ADVANTECH_WDT is not set # CONFIG_ALIM1535_WDT is not set # CONFIG_ALIM7101_WDT is not set # CONFIG_SC520_WDT is not set # CONFIG_EUROTECH_WDT is not set # CONFIG_IB700_WDT is not set # CONFIG_IBMASR is not set # CONFIG_WAFER_WDT is not set # CONFIG_I6300ESB_WDT is not set # CONFIG_ITCO_WDT is not set # CONFIG_IT8712F_WDT is not set # CONFIG_IT87_WDT is not set # CONFIG_HP_WATCHDOG is not set # CONFIG_SC1200_WDT is not set # CONFIG_PC87413_WDT is not set # CONFIG_60XX_WDT is not set # CONFIG_SBC8360_WDT is not set # CONFIG_SBC7240_WDT is not set # CONFIG_CPU5_WDT is not set # CONFIG_SMSC_SCH311X_WDT is not set # CONFIG_SMSC37B787_WDT is not set # CONFIG_W83627HF_WDT is not set # CONFIG_W83697HF_WDT is not set # CONFIG_W83697UG_WDT is not set # CONFIG_W83877F_WDT is not set # CONFIG_W83977F_WDT is not set # CONFIG_MACHZ_WDT is not set # CONFIG_SBC_EPX_C3_WATCHDOG is not set # # PCI-based Watchdog Cards # # CONFIG_PCIPCWATCHDOG is not set # CONFIG_WDTPCI is not set # # USB-based Watchdog Cards # # CONFIG_USBPCWATCHDOG is not set CONFIG_SSB_POSSIBLE=y # # Sonics Silicon Backplane # # CONFIG_SSB is not set # # Multifunction device drivers # # CONFIG_MFD_CORE is not set # CONFIG_MFD_SM501 is not set # CONFIG_HTC_PASIC3 is not set # CONFIG_TWL4030_CORE is not set # CONFIG_MFD_TMIO is not set # CONFIG_PMIC_DA903X is not set # CONFIG_MFD_WM8400 is not set # CONFIG_MFD_PCF50633 is not set # CONFIG_REGULATOR is not set # # Multimedia devices # # # Multimedia core support # CONFIG_VIDEO_DEV=y CONFIG_VIDEO_V4L2_COMMON=y CONFIG_VIDEO_ALLOW_V4L1=y CONFIG_VIDEO_V4L1_COMPAT=y # CONFIG_DVB_CORE is not set CONFIG_VIDEO_MEDIA=y # # Multimedia drivers # # CONFIG_MEDIA_ATTACH is not set CONFIG_MEDIA_TUNER=y # CONFIG_MEDIA_TUNER_CUSTOMIZE is not set CONFIG_MEDIA_TUNER_SIMPLE=y CONFIG_MEDIA_TUNER_TDA8290=y CONFIG_MEDIA_TUNER_TDA9887=y CONFIG_MEDIA_TUNER_TEA5761=y CONFIG_MEDIA_TUNER_TEA5767=y CONFIG_MEDIA_TUNER_MT20XX=y CONFIG_MEDIA_TUNER_XC2028=y CONFIG_MEDIA_TUNER_XC5000=y CONFIG_VIDEO_V4L2=y CONFIG_VIDEO_V4L1=y CONFIG_VIDEO_CAPTURE_DRIVERS=y # CONFIG_VIDEO_ADV_DEBUG is not set # CONFIG_VIDEO_FIXED_MINOR_RANGES is not set CONFIG_VIDEO_HELPER_CHIPS_AUTO=y # CONFIG_VIDEO_VIVI is not set # CONFIG_VIDEO_BT848 is not set # CONFIG_VIDEO_CPIA is not set # CONFIG_VIDEO_CPIA2 is not set # CONFIG_VIDEO_SAA5246A is not set # CONFIG_VIDEO_SAA5249 is not set # CONFIG_VIDEO_STRADIS is not set # CONFIG_VIDEO_ZORAN is not set # CONFIG_VIDEO_SAA7134 is not set # CONFIG_VIDEO_MXB is not set # CONFIG_VIDEO_HEXIUM_ORION is not set # CONFIG_VIDEO_HEXIUM_GEMINI is not set # CONFIG_VIDEO_IVTV is not set # CONFIG_VIDEO_CAFE_CCIC is not set # CONFIG_SOC_CAMERA is not set CONFIG_V4L_USB_DRIVERS=y # CONFIG_USB_VIDEO_CLASS is not set CONFIG_USB_GSPCA=y # CONFIG_USB_M5602 is not set # CONFIG_USB_STV06XX is not set # CONFIG_USB_GSPCA_CONEX is not set # CONFIG_USB_GSPCA_ETOMS is not set # CONFIG_USB_GSPCA_FINEPIX is not set # CONFIG_USB_GSPCA_MARS is not set CONFIG_USB_GSPCA_OV519=y # CONFIG_USB_GSPCA_OV534 is not set # CONFIG_USB_GSPCA_PAC207 is not set # CONFIG_USB_GSPCA_PAC7311 is not set # CONFIG_USB_GSPCA_SONIXB is not set # CONFIG_USB_GSPCA_SONIXJ is not set # CONFIG_USB_GSPCA_SPCA500 is not set # CONFIG_USB_GSPCA_SPCA501 is not set # CONFIG_USB_GSPCA_SPCA505 is not set # CONFIG_USB_GSPCA_SPCA506 is not set # CONFIG_USB_GSPCA_SPCA508 is not set # CONFIG_USB_GSPCA_SPCA561 is not set # CONFIG_USB_GSPCA_STK014 is not set # CONFIG_USB_GSPCA_SUNPLUS is not set # CONFIG_USB_GSPCA_T613 is not set # CONFIG_USB_GSPCA_TV8532 is not set # CONFIG_USB_GSPCA_VC032X is not set # CONFIG_USB_GSPCA_ZC3XX is not set # CONFIG_VIDEO_PVRUSB2 is not set # CONFIG_VIDEO_EM28XX is not set # CONFIG_VIDEO_USBVISION is not set # CONFIG_USB_VICAM is not set # CONFIG_USB_IBMCAM is not set # CONFIG_USB_KONICAWC is not set # CONFIG_USB_QUICKCAM_MESSENGER is not set # CONFIG_USB_ET61X251 is not set # CONFIG_VIDEO_OVCAMCHIP is not set # CONFIG_USB_OV511 is not set # CONFIG_USB_SE401 is not set # CONFIG_USB_SN9C102 is not set # CONFIG_USB_STV680 is not set # CONFIG_USB_ZC0301 is not set # CONFIG_USB_PWC is not set # CONFIG_USB_ZR364XX is not set # CONFIG_USB_STKWEBCAM is not set # CONFIG_USB_S2255 is not set # CONFIG_RADIO_ADAPTERS is not set # CONFIG_DAB is not set # # Graphics support # CONFIG_AGP=y # CONFIG_AGP_ALI is not set CONFIG_AGP_ATI=y # CONFIG_AGP_AMD is not set # CONFIG_AGP_AMD64 is not set CONFIG_AGP_INTEL=y # CONFIG_AGP_NVIDIA is not set # CONFIG_AGP_SIS is not set # CONFIG_AGP_SWORKS is not set # CONFIG_AGP_VIA is not set # CONFIG_AGP_EFFICEON is not set CONFIG_DRM=y # CONFIG_DRM_TDFX is not set # CONFIG_DRM_R128 is not set CONFIG_DRM_RADEON=y CONFIG_DRM_I810=y CONFIG_DRM_I830=y # CONFIG_DRM_I915 is not set # CONFIG_DRM_MGA is not set # CONFIG_DRM_SIS is not set # CONFIG_DRM_VIA is not set # CONFIG_DRM_SAVAGE is not set # CONFIG_VGASTATE is not set # CONFIG_VIDEO_OUTPUT_CONTROL is not set # CONFIG_FB is not set CONFIG_BACKLIGHT_LCD_SUPPORT=y CONFIG_LCD_CLASS_DEVICE=y # CONFIG_LCD_LTV350QV is not set # CONFIG_LCD_ILI9320 is not set # CONFIG_LCD_TDO24M is not set # CONFIG_LCD_VGG2432A4 is not set # CONFIG_LCD_PLATFORM is not set CONFIG_BACKLIGHT_CLASS_DEVICE=y CONFIG_BACKLIGHT_GENERIC=y # CONFIG_BACKLIGHT_PROGEAR is not set # CONFIG_BACKLIGHT_MBP_NVIDIA is not set # CONFIG_BACKLIGHT_SAHARA is not set # # Display device support # CONFIG_DISPLAY_SUPPORT=y # # Display hardware drivers # # # Console display driver support # CONFIG_VGA_CONSOLE=y CONFIG_VGACON_SOFT_SCROLLBACK=y CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64 CONFIG_DUMMY_CONSOLE=y CONFIG_SOUND=y CONFIG_SOUND_OSS_CORE=y CONFIG_SND=y CONFIG_SND_TIMER=y CONFIG_SND_PCM=y CONFIG_SND_SEQUENCER=y # CONFIG_SND_SEQ_DUMMY is not set CONFIG_SND_OSSEMUL=y CONFIG_SND_MIXER_OSS=y CONFIG_SND_PCM_OSS=y CONFIG_SND_PCM_OSS_PLUGINS=y CONFIG_SND_SEQUENCER_OSS=y # CONFIG_SND_HRTIMER is not set CONFIG_SND_RTCTIMER=y CONFIG_SND_SEQ_RTCTIMER_DEFAULT=y CONFIG_SND_DYNAMIC_MINORS=y CONFIG_SND_SUPPORT_OLD_API=y CONFIG_SND_VERBOSE_PROCFS=y CONFIG_SND_VERBOSE_PRINTK=y # CONFIG_SND_DEBUG is not set CONFIG_SND_VMASTER=y CONFIG_SND_AC97_CODEC=y CONFIG_SND_DRIVERS=y # CONFIG_SND_PCSP is not set # CONFIG_SND_DUMMY is not set # CONFIG_SND_VIRMIDI is not set # CONFIG_SND_SERIAL_U16550 is not set # CONFIG_SND_MPU401 is not set # CONFIG_SND_AC97_POWER_SAVE is not set CONFIG_SND_PCI=y # CONFIG_SND_AD1889 is not set # CONFIG_SND_ALS300 is not set # CONFIG_SND_ALS4000 is not set # CONFIG_SND_ALI5451 is not set # CONFIG_SND_ATIIXP is not set # CONFIG_SND_ATIIXP_MODEM is not set # CONFIG_SND_AU8810 is not set # CONFIG_SND_AU8820 is not set # CONFIG_SND_AU8830 is not set # CONFIG_SND_AW2 is not set # CONFIG_SND_AZT3328 is not set # CONFIG_SND_BT87X is not set # CONFIG_SND_CA0106 is not set # CONFIG_SND_CMIPCI is not set # CONFIG_SND_OXYGEN is not set # CONFIG_SND_CS4281 is not set # CONFIG_SND_CS46XX is not set # CONFIG_SND_CS5530 is not set # CONFIG_SND_CS5535AUDIO is not set # CONFIG_SND_DARLA20 is not set # CONFIG_SND_GINA20 is not set # CONFIG_SND_LAYLA20 is not set # CONFIG_SND_DARLA24 is not set # CONFIG_SND_GINA24 is not set # CONFIG_SND_LAYLA24 is not set # CONFIG_SND_MONA is not set # CONFIG_SND_MIA is not set # CONFIG_SND_ECHO3G is not set # CONFIG_SND_INDIGO is not set # CONFIG_SND_INDIGOIO is not set # CONFIG_SND_INDIGODJ is not set # CONFIG_SND_EMU10K1 is not set # CONFIG_SND_EMU10K1X is not set # CONFIG_SND_ENS1370 is not set # CONFIG_SND_ENS1371 is not set # CONFIG_SND_ES1938 is not set # CONFIG_SND_ES1968 is not set # CONFIG_SND_FM801 is not set # CONFIG_SND_HDA_INTEL is not set # CONFIG_SND_HDSP is not set # CONFIG_SND_HDSPM is not set # CONFIG_SND_HIFIER is not set # CONFIG_SND_ICE1712 is not set # CONFIG_SND_ICE1724 is not set CONFIG_SND_INTEL8X0=y # CONFIG_SND_INTEL8X0M is not set # CONFIG_SND_KORG1212 is not set # CONFIG_SND_MAESTRO3 is not set # CONFIG_SND_MIXART is not set # CONFIG_SND_NM256 is not set # CONFIG_SND_PCXHR is not set # CONFIG_SND_RIPTIDE is not set # CONFIG_SND_RME32 is not set # CONFIG_SND_RME96 is not set # CONFIG_SND_RME9652 is not set # CONFIG_SND_SIS7019 is not set # CONFIG_SND_SONICVIBES is not set # CONFIG_SND_TRIDENT is not set # CONFIG_SND_VIA82XX is not set # CONFIG_SND_VIA82XX_MODEM is not set # CONFIG_SND_VIRTUOSO is not set # CONFIG_SND_VX222 is not set # CONFIG_SND_YMFPCI is not set CONFIG_SND_SPI=y CONFIG_SND_USB=y # CONFIG_SND_USB_AUDIO is not set # CONFIG_SND_USB_USX2Y is not set # CONFIG_SND_USB_CAIAQ is not set # CONFIG_SND_USB_US122L is not set CONFIG_SND_SOC=y CONFIG_SND_SOC_I2C_AND_SPI=y # CONFIG_SND_SOC_ALL_CODECS is not set # CONFIG_SOUND_PRIME is not set CONFIG_AC97_BUS=y CONFIG_HID_SUPPORT=y CONFIG_HID=y # CONFIG_HID_DEBUG is not set # CONFIG_HIDRAW is not set # # USB Input Devices # CONFIG_USB_HID=y # CONFIG_HID_PID is not set CONFIG_USB_HIDDEV=y # # Special HID drivers # CONFIG_HID_COMPAT=y CONFIG_HID_A4TECH=y CONFIG_HID_APPLE=y CONFIG_HID_BELKIN=y CONFIG_HID_CHERRY=y CONFIG_HID_CHICONY=y CONFIG_HID_CYPRESS=y CONFIG_HID_EZKEY=y CONFIG_HID_GYRATION=y CONFIG_HID_LOGITECH=y # CONFIG_LOGITECH_FF is not set # CONFIG_LOGIRUMBLEPAD2_FF is not set CONFIG_HID_MICROSOFT=y CONFIG_HID_MONTEREY=y CONFIG_HID_NTRIG=y CONFIG_HID_PANTHERLORD=y # CONFIG_PANTHERLORD_FF is not set CONFIG_HID_PETALYNX=y CONFIG_HID_SAMSUNG=y CONFIG_HID_SONY=y CONFIG_HID_SUNPLUS=y # CONFIG_GREENASIA_FF is not set CONFIG_HID_TOPSEED=y # CONFIG_THRUSTMASTER_FF is not set # CONFIG_ZEROPLUS_FF is not set CONFIG_USB_SUPPORT=y CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB_ARCH_HAS_OHCI=y CONFIG_USB_ARCH_HAS_EHCI=y CONFIG_USB=y # CONFIG_USB_DEBUG is not set # CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set # # Miscellaneous USB options # CONFIG_USB_DEVICEFS=y CONFIG_USB_DEVICE_CLASS=y # CONFIG_USB_DYNAMIC_MINORS is not set # CONFIG_USB_SUSPEND is not set # CONFIG_USB_OTG is not set # CONFIG_USB_MON is not set # CONFIG_USB_WUSB is not set # CONFIG_USB_WUSB_CBAF is not set # # USB Host Controller Drivers # # CONFIG_USB_C67X00_HCD is not set CONFIG_USB_EHCI_HCD=y # CONFIG_USB_EHCI_ROOT_HUB_TT is not set # CONFIG_USB_EHCI_TT_NEWSCHED is not set # CONFIG_USB_OXU210HP_HCD is not set # CONFIG_USB_ISP116X_HCD is not set # CONFIG_USB_ISP1760_HCD is not set CONFIG_USB_OHCI_HCD=y # CONFIG_USB_OHCI_BIG_ENDIAN_DESC is not set # CONFIG_USB_OHCI_BIG_ENDIAN_MMIO is not set CONFIG_USB_OHCI_LITTLE_ENDIAN=y CONFIG_USB_UHCI_HCD=y # CONFIG_USB_SL811_HCD is not set # CONFIG_USB_R8A66597_HCD is not set # CONFIG_USB_HWA_HCD is not set # # USB Device Class drivers # # CONFIG_USB_ACM is not set # CONFIG_USB_PRINTER is not set # CONFIG_USB_WDM is not set # CONFIG_USB_TMC is not set # # NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may also be needed; # # # see USB_STORAGE Help for more information # CONFIG_USB_LIBUSUAL=y # # USB Imaging devices # # CONFIG_USB_MDC800 is not set # # USB port drivers # # CONFIG_USB_SERIAL is not set # # USB Miscellaneous drivers # # CONFIG_USB_EMI62 is not set # CONFIG_USB_EMI26 is not set # CONFIG_USB_ADUTUX is not set # CONFIG_USB_SEVSEG is not set # CONFIG_USB_RIO500 is not set # CONFIG_USB_LEGOTOWER is not set # CONFIG_USB_LCD is not set # CONFIG_USB_BERRY_CHARGE is not set # CONFIG_USB_LED is not set # CONFIG_USB_CYPRESS_CY7C63 is not set # CONFIG_USB_CYTHERM is not set # CONFIG_USB_PHIDGET is not set # CONFIG_USB_IDMOUSE is not set # CONFIG_USB_FTDI_ELAN is not set # CONFIG_USB_APPLEDISPLAY is not set # CONFIG_USB_SISUSBVGA is not set # CONFIG_USB_LD is not set # CONFIG_USB_TRANCEVIBRATOR is not set # CONFIG_USB_IOWARRIOR is not set # CONFIG_USB_TEST is not set # CONFIG_USB_ISIGHTFW is not set # CONFIG_USB_VST is not set # # OTG and related infrastructure # # CONFIG_UWB is not set # CONFIG_MMC is not set # CONFIG_MEMSTICK is not set CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y # # LED drivers # # CONFIG_LEDS_ALIX2 is not set # CONFIG_LEDS_PCA9532 is not set # CONFIG_LEDS_CLEVO_MAIL is not set # CONFIG_LEDS_PCA955X is not set # # LED Triggers # CONFIG_LEDS_TRIGGERS=y CONFIG_LEDS_TRIGGER_TIMER=y CONFIG_LEDS_TRIGGER_IDE_DISK=y CONFIG_LEDS_TRIGGER_HEARTBEAT=y # CONFIG_LEDS_TRIGGER_BACKLIGHT is not set # CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set # CONFIG_ACCESSIBILITY is not set # CONFIG_EDAC is not set # CONFIG_RTC_CLASS is not set # CONFIG_DMADEVICES is not set # CONFIG_UIO is not set # CONFIG_STAGING is not set CONFIG_X86_PLATFORM_DEVICES=y # CONFIG_ASUS_LAPTOP is not set # CONFIG_FUJITSU_LAPTOP is not set # CONFIG_TC1100_WMI is not set # CONFIG_MSI_LAPTOP is not set # CONFIG_PANASONIC_LAPTOP is not set # CONFIG_COMPAL_LAPTOP is not set # CONFIG_SONY_LAPTOP is not set # CONFIG_THINKPAD_ACPI is not set # CONFIG_INTEL_MENLOW is not set # CONFIG_EEEPC_LAPTOP is not set # CONFIG_ACPI_WMI is not set # CONFIG_ACPI_ASUS is not set # CONFIG_ACPI_TOSHIBA is not set # # Firmware Drivers # # CONFIG_EDD is not set CONFIG_FIRMWARE_MEMMAP=y # CONFIG_DELL_RBU is not set # CONFIG_DCDBAS is not set CONFIG_DMIID=y # CONFIG_ISCSI_IBFT_FIND is not set # # File systems # # CONFIG_EXT2_FS is not set CONFIG_EXT3_FS=y CONFIG_EXT3_FS_XATTR=y CONFIG_EXT3_FS_POSIX_ACL=y CONFIG_EXT3_FS_SECURITY=y # CONFIG_EXT4_FS is not set CONFIG_JBD=y # CONFIG_JBD_DEBUG is not set CONFIG_FS_MBCACHE=y # CONFIG_REISERFS_FS is not set CONFIG_JFS_FS=y # CONFIG_JFS_POSIX_ACL is not set # CONFIG_JFS_SECURITY is not set # CONFIG_JFS_DEBUG is not set # CONFIG_JFS_STATISTICS is not set CONFIG_FS_POSIX_ACL=y CONFIG_FILE_LOCKING=y # CONFIG_XFS_FS is not set # CONFIG_OCFS2_FS is not set # CONFIG_BTRFS_FS is not set CONFIG_DNOTIFY=y CONFIG_INOTIFY=y CONFIG_INOTIFY_USER=y # CONFIG_QUOTA is not set CONFIG_AUTOFS_FS=y CONFIG_AUTOFS4_FS=y # CONFIG_FUSE_FS is not set CONFIG_GENERIC_ACL=y # # CD-ROM/DVD Filesystems # CONFIG_ISO9660_FS=y CONFIG_JOLIET=y CONFIG_ZISOFS=y # CONFIG_UDF_FS is not set # # DOS/FAT/NT Filesystems # CONFIG_FAT_FS=y CONFIG_MSDOS_FS=y CONFIG_VFAT_FS=y CONFIG_FAT_DEFAULT_CODEPAGE=437 CONFIG_FAT_DEFAULT_IOCHARSET="ascii" # CONFIG_NTFS_FS is not set # # Pseudo filesystems # CONFIG_PROC_FS=y CONFIG_PROC_KCORE=y CONFIG_PROC_SYSCTL=y CONFIG_PROC_PAGE_MONITOR=y CONFIG_SYSFS=y CONFIG_TMPFS=y CONFIG_TMPFS_POSIX_ACL=y # CONFIG_HUGETLBFS is not set # CONFIG_HUGETLB_PAGE is not set # CONFIG_CONFIGFS_FS is not set CONFIG_MISC_FILESYSTEMS=y # CONFIG_ADFS_FS is not set # CONFIG_AFFS_FS is not set # CONFIG_ECRYPT_FS is not set # CONFIG_HFS_FS is not set # CONFIG_HFSPLUS_FS is not set # CONFIG_BEFS_FS is not set # CONFIG_BFS_FS is not set # CONFIG_EFS_FS is not set # CONFIG_CRAMFS is not set # CONFIG_SQUASHFS is not set # CONFIG_VXFS_FS is not set # CONFIG_MINIX_FS is not set # CONFIG_OMFS_FS is not set # CONFIG_HPFS_FS is not set # CONFIG_QNX4FS_FS is not set # CONFIG_ROMFS_FS is not set # CONFIG_SYSV_FS is not set # CONFIG_UFS_FS is not set CONFIG_NETWORK_FILESYSTEMS=y # CONFIG_NFS_FS is not set # CONFIG_NFSD is not set # CONFIG_SMB_FS is not set # CONFIG_CIFS is not set # CONFIG_NCP_FS is not set # CONFIG_CODA_FS is not set # CONFIG_AFS_FS is not set # # Partition Types # CONFIG_PARTITION_ADVANCED=y # CONFIG_ACORN_PARTITION is not set # CONFIG_OSF_PARTITION is not set # CONFIG_AMIGA_PARTITION is not set # CONFIG_ATARI_PARTITION is not set # CONFIG_MAC_PARTITION is not set CONFIG_MSDOS_PARTITION=y CONFIG_BSD_DISKLABEL=y CONFIG_MINIX_SUBPARTITION=y CONFIG_SOLARIS_X86_PARTITION=y CONFIG_UNIXWARE_DISKLABEL=y CONFIG_LDM_PARTITION=y CONFIG_LDM_DEBUG=y # CONFIG_SGI_PARTITION is not set # CONFIG_ULTRIX_PARTITION is not set # CONFIG_SUN_PARTITION is not set # CONFIG_KARMA_PARTITION is not set # CONFIG_EFI_PARTITION is not set CONFIG_SYSV68_PARTITION=y CONFIG_NLS=y CONFIG_NLS_DEFAULT="utf8" CONFIG_NLS_CODEPAGE_437=y # CONFIG_NLS_CODEPAGE_737 is not set # CONFIG_NLS_CODEPAGE_775 is not set # CONFIG_NLS_CODEPAGE_850 is not set # CONFIG_NLS_CODEPAGE_852 is not set # CONFIG_NLS_CODEPAGE_855 is not set # CONFIG_NLS_CODEPAGE_857 is not set # CONFIG_NLS_CODEPAGE_860 is not set # CONFIG_NLS_CODEPAGE_861 is not set # CONFIG_NLS_CODEPAGE_862 is not set # CONFIG_NLS_CODEPAGE_863 is not set # CONFIG_NLS_CODEPAGE_864 is not set # CONFIG_NLS_CODEPAGE_865 is not set # CONFIG_NLS_CODEPAGE_866 is not set # CONFIG_NLS_CODEPAGE_869 is not set # CONFIG_NLS_CODEPAGE_936 is not set # CONFIG_NLS_CODEPAGE_950 is not set # CONFIG_NLS_CODEPAGE_932 is not set # CONFIG_NLS_CODEPAGE_949 is not set # CONFIG_NLS_CODEPAGE_874 is not set # CONFIG_NLS_ISO8859_8 is not set # CONFIG_NLS_CODEPAGE_1250 is not set # CONFIG_NLS_CODEPAGE_1251 is not set CONFIG_NLS_ASCII=y # CONFIG_NLS_ISO8859_1 is not set # CONFIG_NLS_ISO8859_2 is not set # CONFIG_NLS_ISO8859_3 is not set # CONFIG_NLS_ISO8859_4 is not set # CONFIG_NLS_ISO8859_5 is not set # CONFIG_NLS_ISO8859_6 is not set # CONFIG_NLS_ISO8859_7 is not set # CONFIG_NLS_ISO8859_9 is not set # CONFIG_NLS_ISO8859_13 is not set # CONFIG_NLS_ISO8859_14 is not set # CONFIG_NLS_ISO8859_15 is not set # CONFIG_NLS_KOI8_R is not set # CONFIG_NLS_KOI8_U is not set CONFIG_NLS_UTF8=y # CONFIG_DLM is not set # # Kernel hacking # CONFIG_TRACE_IRQFLAGS_SUPPORT=y CONFIG_PRINTK_TIME=y CONFIG_ALLOW_WARNINGS=y CONFIG_ENABLE_WARN_DEPRECATED=y CONFIG_ENABLE_MUST_CHECK=y CONFIG_FRAME_WARN=1024 CONFIG_MAGIC_SYSRQ=y # CONFIG_UNUSED_SYMBOLS is not set CONFIG_DEBUG_FS=y # CONFIG_HEADERS_CHECK is not set # CONFIG_DEBUG_SECTION_MISMATCH is not set CONFIG_DEBUG_KERNEL=y # CONFIG_DEBUG_SHIRQ is not set CONFIG_DETECT_SOFTLOCKUP=y # CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0 CONFIG_DETECT_HUNG_TASK=y # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0 CONFIG_SCHED_DEBUG=y # CONFIG_SCHEDSTATS is not set # CONFIG_TIMER_STATS is not set # CONFIG_DEBUG_OBJECTS is not set # CONFIG_DEBUG_SLAB is not set CONFIG_DEBUG_PREEMPT=y # CONFIG_DEBUG_RT_MUTEXES is not set # CONFIG_RT_MUTEX_TESTER is not set # CONFIG_DEBUG_SPINLOCK is not set # CONFIG_DEBUG_MUTEXES is not set # CONFIG_DEBUG_LOCK_ALLOC is not set # CONFIG_PROVE_LOCKING is not set # CONFIG_LOCK_STAT is not set # CONFIG_DEBUG_SPINLOCK_SLEEP is not set # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set CONFIG_STACKTRACE=y # CONFIG_DEBUG_KOBJECT is not set CONFIG_DEBUG_BUGVERBOSE=y # CONFIG_DEBUG_INFO is not set # CONFIG_DEBUG_VM is not set # CONFIG_DEBUG_VIRTUAL is not set # CONFIG_DEBUG_WRITECOUNT is not set CONFIG_DEBUG_MEMORY_INIT=y # CONFIG_DEBUG_LIST is not set # CONFIG_DEBUG_SG is not set # CONFIG_DEBUG_NOTIFIERS is not set CONFIG_ARCH_WANT_FRAME_POINTERS=y CONFIG_FRAME_POINTER=y # CONFIG_BOOT_PRINTK_DELAY is not set # CONFIG_RCU_TORTURE_TEST is not set # CONFIG_RCU_CPU_STALL_DETECTOR is not set # CONFIG_BACKTRACE_SELF_TEST is not set # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set # CONFIG_FAULT_INJECTION is not set # CONFIG_LATENCYTOP is not set # CONFIG_SYSCTL_SYSCALL_CHECK is not set CONFIG_USER_STACKTRACE_SUPPORT=y CONFIG_NOP_TRACER=y CONFIG_HAVE_FTRACE_NMI_ENTER=y CONFIG_HAVE_FUNCTION_TRACER=y CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y CONFIG_HAVE_DYNAMIC_FTRACE=y CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y CONFIG_HAVE_HW_BRANCH_TRACER=y CONFIG_HAVE_FTRACE_SYSCALLS=y CONFIG_TRACER_MAX_TRACE=y CONFIG_RING_BUFFER=y CONFIG_FTRACE_NMI_ENTER=y CONFIG_TRACING=y CONFIG_TRACING_SUPPORT=y # # Tracers # CONFIG_FUNCTION_TRACER=y CONFIG_FUNCTION_GRAPH_TRACER=y # CONFIG_IRQSOFF_TRACER is not set # CONFIG_PREEMPT_TRACER is not set CONFIG_SYSPROF_TRACER=y CONFIG_SCHED_TRACER=y CONFIG_CONTEXT_SWITCH_TRACER=y # CONFIG_EVENT_TRACER is not set # CONFIG_FTRACE_SYSCALLS is not set CONFIG_BOOT_TRACER=y CONFIG_TRACE_BRANCH_PROFILING=y # CONFIG_PROFILE_ALL_BRANCHES is not set CONFIG_TRACING_BRANCHES=y CONFIG_BRANCH_TRACER=y # CONFIG_POWER_TRACER is not set # CONFIG_STACK_TRACER is not set CONFIG_HW_BRANCH_TRACER=y # CONFIG_KMEMTRACE is not set # CONFIG_WORKQUEUE_TRACER is not set # CONFIG_BLK_DEV_IO_TRACE is not set CONFIG_DYNAMIC_FTRACE=y CONFIG_FTRACE_MCOUNT_RECORD=y # CONFIG_FTRACE_STARTUP_TEST is not set # CONFIG_MMIOTRACE is not set # CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set # CONFIG_DYNAMIC_PRINTK_DEBUG is not set # CONFIG_SAMPLES is not set CONFIG_HAVE_ARCH_KGDB=y # CONFIG_KGDB is not set CONFIG_HAVE_ARCH_KMEMCHECK=y # CONFIG_STRICT_DEVMEM is not set CONFIG_X86_VERBOSE_BOOTUP=y CONFIG_EARLY_PRINTK=y # CONFIG_EARLY_PRINTK_DBGP is not set # CONFIG_DEBUG_STACKOVERFLOW is not set # CONFIG_DEBUG_STACK_USAGE is not set # CONFIG_DEBUG_PAGEALLOC is not set # CONFIG_DEBUG_PER_CPU_MAPS is not set # CONFIG_X86_PTDUMP is not set CONFIG_DEBUG_RODATA=y CONFIG_DEBUG_RODATA_TEST=y # CONFIG_DEBUG_NX_TEST is not set # CONFIG_4KSTACKS is not set CONFIG_DOUBLEFAULT=y CONFIG_HAVE_MMIOTRACE_SUPPORT=y CONFIG_IO_DELAY_TYPE_0X80=0 CONFIG_IO_DELAY_TYPE_0XED=1 CONFIG_IO_DELAY_TYPE_UDELAY=2 CONFIG_IO_DELAY_TYPE_NONE=3 CONFIG_IO_DELAY_0X80=y # CONFIG_IO_DELAY_0XED is not set # CONFIG_IO_DELAY_UDELAY is not set # CONFIG_IO_DELAY_NONE is not set CONFIG_DEFAULT_IO_DELAY_TYPE=0 # CONFIG_DEBUG_BOOT_PARAMS is not set # CONFIG_CPA_DEBUG is not set # CONFIG_OPTIMIZE_INLINING is not set # # Security options # CONFIG_KEYS=y CONFIG_KEYS_DEBUG_PROC_KEYS=y # CONFIG_SECURITY is not set # CONFIG_SECURITYFS is not set # CONFIG_SECURITY_FILE_CAPABILITIES is not set CONFIG_CRYPTO=y # # Crypto core or helper # # CONFIG_CRYPTO_FIPS is not set # CONFIG_CRYPTO_MANAGER is not set # CONFIG_CRYPTO_MANAGER2 is not set # CONFIG_CRYPTO_GF128MUL is not set # CONFIG_CRYPTO_NULL is not set # CONFIG_CRYPTO_CRYPTD is not set # CONFIG_CRYPTO_AUTHENC is not set # CONFIG_CRYPTO_TEST is not set # # Authenticated Encryption with Associated Data # # CONFIG_CRYPTO_CCM is not set # CONFIG_CRYPTO_GCM is not set # CONFIG_CRYPTO_SEQIV is not set # # Block modes # # CONFIG_CRYPTO_CBC is not set # CONFIG_CRYPTO_CTR is not set # CONFIG_CRYPTO_CTS is not set # CONFIG_CRYPTO_ECB is not set # CONFIG_CRYPTO_LRW is not set # CONFIG_CRYPTO_PCBC is not set # CONFIG_CRYPTO_XTS is not set # # Hash modes # # CONFIG_CRYPTO_HMAC is not set # CONFIG_CRYPTO_XCBC is not set # # Digest # # CONFIG_CRYPTO_CRC32C is not set # CONFIG_CRYPTO_CRC32C_INTEL is not set # CONFIG_CRYPTO_MD4 is not set # CONFIG_CRYPTO_MD5 is not set # CONFIG_CRYPTO_MICHAEL_MIC is not set # CONFIG_CRYPTO_RMD128 is not set # CONFIG_CRYPTO_RMD160 is not set # CONFIG_CRYPTO_RMD256 is not set # CONFIG_CRYPTO_RMD320 is not set # CONFIG_CRYPTO_SHA1 is not set # CONFIG_CRYPTO_SHA256 is not set # CONFIG_CRYPTO_SHA512 is not set # CONFIG_CRYPTO_TGR192 is not set # CONFIG_CRYPTO_WP512 is not set # # Ciphers # # CONFIG_CRYPTO_AES is not set # CONFIG_CRYPTO_AES_586 is not set # CONFIG_CRYPTO_ANUBIS is not set # CONFIG_CRYPTO_ARC4 is not set # CONFIG_CRYPTO_BLOWFISH is not set # CONFIG_CRYPTO_CAMELLIA is not set # CONFIG_CRYPTO_CAST5 is not set # CONFIG_CRYPTO_CAST6 is not set # CONFIG_CRYPTO_DES is not set # CONFIG_CRYPTO_FCRYPT is not set # CONFIG_CRYPTO_KHAZAD is not set # CONFIG_CRYPTO_SALSA20 is not set # CONFIG_CRYPTO_SALSA20_586 is not set # CONFIG_CRYPTO_SEED is not set # CONFIG_CRYPTO_SERPENT is not set # CONFIG_CRYPTO_TEA is not set # CONFIG_CRYPTO_TWOFISH is not set # CONFIG_CRYPTO_TWOFISH_586 is not set # # Compression # # CONFIG_CRYPTO_DEFLATE is not set # CONFIG_CRYPTO_LZO is not set # # Random Number Generation # # CONFIG_CRYPTO_ANSI_CPRNG is not set CONFIG_CRYPTO_HW=y # CONFIG_CRYPTO_DEV_PADLOCK is not set # CONFIG_CRYPTO_DEV_GEODE is not set # CONFIG_CRYPTO_DEV_HIFN_795X is not set CONFIG_HAVE_KVM=y # CONFIG_VIRTUALIZATION is not set CONFIG_BINARY_PRINTF=y # # Library routines # CONFIG_BITREVERSE=y CONFIG_GENERIC_FIND_FIRST_BIT=y CONFIG_GENERIC_FIND_NEXT_BIT=y CONFIG_GENERIC_FIND_LAST_BIT=y # CONFIG_CRC_CCITT is not set # CONFIG_CRC16 is not set # CONFIG_CRC_T10DIF is not set # CONFIG_CRC_ITU_T is not set CONFIG_CRC32=y # CONFIG_CRC7 is not set # CONFIG_LIBCRC32C is not set CONFIG_ZLIB_INFLATE=y CONFIG_DECOMPRESS_GZIP=y CONFIG_HAS_IOMEM=y CONFIG_HAS_IOPORT=y CONFIG_HAS_DMA=y ^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [tip:x86/mtrr] x86: more MTRR debug printouts 2009-03-13 15:45 ` Jaswinder Singh Rajput @ 2009-03-13 19:46 ` Yinghai Lu 2009-03-14 7:15 ` Jaswinder Singh Rajput ` (2 more replies) 0 siblings, 3 replies; 19+ messages in thread From: Yinghai Lu @ 2009-03-13 19:46 UTC (permalink / raw) To: Jaswinder Singh Rajput, mingo Cc: mingo, hpa, linux-kernel, tglx, linux-tip-commits Jaswinder Singh Rajput wrote: > On Fri, 2009-03-13 at 21:03 +0530, Jaswinder Singh Rajput wrote: >> On Fri, 2009-03-13 at 02:34 +0000, Yinghai Lu wrote: >>> Commit-ID: 8ad9790588ee2e69118b2b294ddab6f3f0379ad9 >>> Gitweb: http://git.kernel.org/tip/8ad9790588ee2e69118b2b294ddab6f3f0379ad9 >>> Author: Yinghai Lu <yinghai@kernel.org> >>> AuthorDate: Thu, 12 Mar 2009 18:43:54 -0700 >>> Commit: Ingo Molnar <mingo@elte.hu> >>> CommitDate: Fri, 13 Mar 2009 02:52:18 +0100 >>> >>> x86: more MTRR debug printouts >>> >>> Impact: improve MTRR debugging messages >>> >>> There's still inefficiencies suspected with the MTRR sanitizing >>> code, so make sure we get all the info we need from a dmesg. >>> >>> - Remove unneeded mtrr_show >>> >>> (It will only printout one time by first cpu, so it is no big deal.) >>> >>> - Also print out directly from get_mtrr, because it doesn't update mtrr_state. >>> >>> Signed-off-by: Yinghai Lu <yinghai@kernel.org> >>> LKML-Reference: <49B9BA5A.40108@kernel.org> >>> Signed-off-by: Ingo Molnar <mingo@elte.hu> >>> >>> >>> *base = 0; >>> @@ -407,6 +410,10 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base, >>> *size = -mask_lo; >>> *base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT; >>> *type = base_lo & 0xff; >>> + >>> + printk(KERN_DEBUG " get_mtrr: cpu%d reg%02d base=%010lx size=%010lx %s\n", >>> + smp_processor_id(), reg, *base, *size, >>> + mtrr_attrib_to_str(*type & 0xff)); >>> } >>> >> This leads to: >> >> Kernel failure message 1: >> BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 >> caller is generic_get_mtrr+0x12a/0x146 >> Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar >> 13 20:43:36 IST 2009 >> Call Trace: >> [<c0412cc3>] ? printk+0x14/0x16 >> [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 >> [<c010f0c3>] generic_get_mtrr+0x12a/0x146 >> [<c010e351>] mtrr_add_page+0x154/0x332 >> [<c010e7b1>] mtrr_file_add+0x72/0x86 >> [<c010e9e0>] mtrr_ioctl+0x21b/0x309 >> [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 >> [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 >> [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 >> [<c0194101>] vfs_ioctl+0x27/0x6e >> [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 >> [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e >> [<c01898b0>] ? fget_light+0x40/0x130 >> [<c01946ee>] sys_ioctl+0x34/0x61 >> [<c0102c73>] sysenter_do_call+0x12/0x25 >> please check [PATCH] x86: fix get_mtrr warning about smp_processor_id with preempt Impact: fix warning Jaswinder noticed that there is warning about smp_processor_id() in get_mtrr try to fix it by use disable/enable to wrap it. Reported-by: Jaswinder Singh Rajput <jaswinder@kernel.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- arch/x86/kernel/cpu/mtrr/generic.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) Index: linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/generic.c +++ linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c @@ -381,14 +381,18 @@ static void generic_get_mtrr(unsigned in { unsigned int mask_lo, mask_hi, base_lo, base_hi; unsigned int tmp, hi; + int cpu; /* * get_mtrr doesn't need to update mtrr_state, also it could be called * from any cpu, so try to print it out directly. */ + preempt_disable(); + cpu = smp_processor_id(); rdmsr(MTRRphysMask_MSR(reg), mask_lo, mask_hi); if ((mask_lo & 0x800) == 0) { + preempt_enable(); /* Invalid (i.e. free) range */ *base = 0; *size = 0; @@ -397,6 +401,7 @@ static void generic_get_mtrr(unsigned in } rdmsr(MTRRphysBase_MSR(reg), base_lo, base_hi); + preempt_enable(); /* Work out the shifted address mask. */ tmp = mask_hi << (32 - PAGE_SHIFT) | mask_lo >> PAGE_SHIFT; @@ -419,7 +424,7 @@ static void generic_get_mtrr(unsigned in *type = base_lo & 0xff; printk(KERN_DEBUG " get_mtrr: cpu%d reg%02d base=%010lx size=%010lx %s\n", - smp_processor_id(), reg, *base, *size, + cpu, reg, *base, *size, mtrr_attrib_to_str(*type & 0xff)); } ^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [tip:x86/mtrr] x86: more MTRR debug printouts 2009-03-13 19:46 ` Yinghai Lu @ 2009-03-14 7:15 ` Jaswinder Singh Rajput 2009-03-14 7:21 ` Yinghai Lu 2009-03-14 11:18 ` Ingo Molnar 2009-03-14 11:39 ` [tip:x86/mtrr] x86: fix get_mtrr() warning about smp_processor_id() with CONFIG_PREEMPT=y Yinghai Lu 2 siblings, 1 reply; 19+ messages in thread From: Jaswinder Singh Rajput @ 2009-03-14 7:15 UTC (permalink / raw) To: Yinghai Lu Cc: mingo, mingo, hpa, linux-kernel, tglx, linux-tip-commits, Andrew Morton On Fri, 2009-03-13 at 12:46 -0700, Yinghai Lu wrote: > Jaswinder Singh Rajput wrote: > > On Fri, 2009-03-13 at 21:03 +0530, Jaswinder Singh Rajput wrote: > >> On Fri, 2009-03-13 at 02:34 +0000, Yinghai Lu wrote: > >>> Commit-ID: 8ad9790588ee2e69118b2b294ddab6f3f0379ad9 > >>> Gitweb: http://git.kernel.org/tip/8ad9790588ee2e69118b2b294ddab6f3f0379ad9 > >>> Author: Yinghai Lu <yinghai@kernel.org> > >>> AuthorDate: Thu, 12 Mar 2009 18:43:54 -0700 > >>> Commit: Ingo Molnar <mingo@elte.hu> > >>> CommitDate: Fri, 13 Mar 2009 02:52:18 +0100 > >>> > >>> x86: more MTRR debug printouts > >>> > >>> Impact: improve MTRR debugging messages > >>> > >>> There's still inefficiencies suspected with the MTRR sanitizing > >>> code, so make sure we get all the info we need from a dmesg. > >>> > >>> - Remove unneeded mtrr_show > >>> > >>> (It will only printout one time by first cpu, so it is no big deal.) > >>> > >>> - Also print out directly from get_mtrr, because it doesn't update mtrr_state. > >>> > >>> Signed-off-by: Yinghai Lu <yinghai@kernel.org> > >>> LKML-Reference: <49B9BA5A.40108@kernel.org> > >>> Signed-off-by: Ingo Molnar <mingo@elte.hu> > >>> > >>> > >>> *base = 0; > >>> @@ -407,6 +410,10 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base, > >>> *size = -mask_lo; > >>> *base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT; > >>> *type = base_lo & 0xff; > >>> + > >>> + printk(KERN_DEBUG " get_mtrr: cpu%d reg%02d base=%010lx size=%010lx %s\n", > >>> + smp_processor_id(), reg, *base, *size, > >>> + mtrr_attrib_to_str(*type & 0xff)); > >>> } > >>> > >> This leads to: > >> > >> Kernel failure message 1: > >> BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 > >> caller is generic_get_mtrr+0x12a/0x146 > >> Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar > >> 13 20:43:36 IST 2009 > >> Call Trace: > >> [<c0412cc3>] ? printk+0x14/0x16 > >> [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 > >> [<c010f0c3>] generic_get_mtrr+0x12a/0x146 > >> [<c010e351>] mtrr_add_page+0x154/0x332 > >> [<c010e7b1>] mtrr_file_add+0x72/0x86 > >> [<c010e9e0>] mtrr_ioctl+0x21b/0x309 > >> [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 > >> [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 > >> [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 > >> [<c0194101>] vfs_ioctl+0x27/0x6e > >> [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 > >> [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e > >> [<c01898b0>] ? fget_light+0x40/0x130 > >> [<c01946ee>] sys_ioctl+0x34/0x61 > >> [<c0102c73>] sysenter_do_call+0x12/0x25 > >> > > please check > > [PATCH] x86: fix get_mtrr warning about smp_processor_id with preempt > > Impact: fix warning > > Jaswinder noticed that there is warning about smp_processor_id() in get_mtrr > > try to fix it by use disable/enable to wrap it. > > Reported-by: Jaswinder Singh Rajput <jaswinder@kernel.org> > Signed-off-by: Yinghai Lu <yinghai@kernel.org> Thanks, this fix the bug. But I am still not happy with ruining dmesg, It looks weird on 2 cpu box, what will be the case for 16 or more cpus. We are supporting these output in /sys/kernel/x86/cpu/cpu*/mtrr/mtrr through cpu_debug.c, why do not you use it and only flush this information on panic: [ 0.000000] last_pfn = 0x3ff2f max_arch_pfn = 0x100000 [ 0.000000] MTRR default type: uncachable [ 0.000000] MTRR fixed ranges enabled: [ 0.000000] 00000-0FFFF write-back [ 0.000000] 10000-1FFFF write-back [ 0.000000] 20000-2FFFF write-back [ 0.000000] 30000-3FFFF write-back [ 0.000000] 40000-4FFFF write-back [ 0.000000] 50000-5FFFF write-back [ 0.000000] 60000-6FFFF write-back [ 0.000000] 70000-7FFFF write-back [ 0.000000] 80000-83FFF write-back [ 0.000000] 84000-87FFF write-back [ 0.000000] 88000-8BFFF write-back [ 0.000000] 8C000-8FFFF write-back [ 0.000000] 90000-93FFF write-back [ 0.000000] 94000-97FFF write-back [ 0.000000] 98000-9BFFF write-back [ 0.000000] 9C000-9FFFF write-back [ 0.000000] A0000-A3FFF uncachable [ 0.000000] A4000-A7FFF uncachable [ 0.000000] A8000-ABFFF uncachable [ 0.000000] AC000-AFFFF uncachable [ 0.000000] B0000-B3FFF uncachable [ 0.000000] B4000-B7FFF uncachable [ 0.000000] B8000-BBFFF uncachable [ 0.000000] BC000-BFFFF uncachable [ 0.000000] C0000-C0FFF uncachable [ 0.000000] C1000-C1FFF uncachable [ 0.000000] C2000-C2FFF uncachable [ 0.000000] C3000-C3FFF uncachable [ 0.000000] C4000-C4FFF uncachable [ 0.000000] C5000-C5FFF uncachable [ 0.000000] C6000-C6FFF uncachable [ 0.000000] C7000-C7FFF uncachable [ 0.000000] C8000-C8FFF uncachable [ 0.000000] C9000-C9FFF uncachable [ 0.000000] CA000-CAFFF uncachable [ 0.000000] CB000-CBFFF uncachable [ 0.000000] CC000-CCFFF uncachable [ 0.000000] CD000-CDFFF uncachable [ 0.000000] CE000-CEFFF uncachable [ 0.000000] CF000-CFFFF uncachable [ 0.000000] D0000-D0FFF uncachable [ 0.000000] D1000-D1FFF uncachable [ 0.000000] D2000-D2FFF uncachable [ 0.000000] D3000-D3FFF uncachable [ 0.000000] D4000-D4FFF uncachable [ 0.000000] D5000-D5FFF uncachable [ 0.000000] D6000-D6FFF uncachable [ 0.000000] D7000-D7FFF uncachable [ 0.000000] D8000-D8FFF uncachable [ 0.000000] D9000-D9FFF uncachable [ 0.000000] DA000-DAFFF uncachable [ 0.000000] DB000-DBFFF uncachable [ 0.000000] DC000-DCFFF uncachable [ 0.000000] DD000-DDFFF uncachable [ 0.000000] DE000-DEFFF uncachable [ 0.000000] DF000-DFFFF uncachable [ 0.000000] E0000-E0FFF uncachable [ 0.000000] E1000-E1FFF uncachable [ 0.000000] E2000-E2FFF uncachable [ 0.000000] E3000-E3FFF uncachable [ 0.000000] E4000-E4FFF uncachable [ 0.000000] E5000-E5FFF uncachable [ 0.000000] E6000-E6FFF uncachable [ 0.000000] E7000-E7FFF uncachable [ 0.000000] E8000-E8FFF uncachable [ 0.000000] E9000-E9FFF uncachable [ 0.000000] EA000-EAFFF uncachable [ 0.000000] EB000-EBFFF uncachable [ 0.000000] EC000-ECFFF uncachable [ 0.000000] ED000-EDFFF uncachable [ 0.000000] EE000-EEFFF uncachable [ 0.000000] EF000-EFFFF uncachable [ 0.000000] F0000-F0FFF write-protect [ 0.000000] F1000-F1FFF write-protect [ 0.000000] F2000-F2FFF write-protect [ 0.000000] F3000-F3FFF write-protect [ 0.000000] F4000-F4FFF write-protect [ 0.000000] F5000-F5FFF write-protect [ 0.000000] F6000-F6FFF write-protect [ 0.000000] F7000-F7FFF write-protect [ 0.000000] F8000-F8FFF write-protect [ 0.000000] F9000-F9FFF write-protect [ 0.000000] FA000-FAFFF write-protect [ 0.000000] FB000-FBFFF write-protect [ 0.000000] FC000-FCFFF write-protect [ 0.000000] FD000-FDFFF write-protect [ 0.000000] FE000-FEFFF write-protect [ 0.000000] FF000-FFFFF write-protect [ 0.000000] MTRR variable ranges enabled: [ 0.000000] 0 base 000000000 mask FC0000000 write-back [ 0.000000] 1 disabled [ 0.000000] 2 disabled [ 0.000000] 3 disabled [ 0.000000] 4 disabled [ 0.000000] 5 disabled [ 0.000000] 6 disabled [ 0.000000] 7 disabled [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 [ 0.000000] get_mtrr: cpu0 reg00 base=0000000000 size=0000040000 write-back .. [ 32.112812] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.112822] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.112874] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.112881] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.121742] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.121749] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.138014] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.138021] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.138028] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.138033] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.138660] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 32.139246] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.139284] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.139297] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.139307] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.139996] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 32.306889] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.306899] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.313545] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.313551] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.313558] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.313563] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.317551] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.317559] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.317565] get_mtrr: cpu1 reg02 base=00000e0000 size=0000008000 write-combining [ 32.389848] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.389856] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.389860] get_mtrr: cpu1 reg02 base=00000e0000 size=0000008000 write-combining [ 32.390449] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 32.390591] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.390601] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.390610] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 32.390648] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining [ 32.390710] get_mtrr: cpu1 reg00 base=0000000000 size=0000040000 write-back [ 32.390715] get_mtrr: cpu1 reg01 base=00000f8000 size=0000004000 write-combining [ 32.390720] get_mtrr: cpu1 reg02 base=00000e0000 size=0000010000 write-combining ^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [tip:x86/mtrr] x86: more MTRR debug printouts 2009-03-14 7:15 ` Jaswinder Singh Rajput @ 2009-03-14 7:21 ` Yinghai Lu 0 siblings, 0 replies; 19+ messages in thread From: Yinghai Lu @ 2009-03-14 7:21 UTC (permalink / raw) To: Jaswinder Singh Rajput Cc: mingo, mingo, hpa, linux-kernel, tglx, linux-tip-commits, Andrew Morton Jaswinder Singh Rajput wrote: > On Fri, 2009-03-13 at 12:46 -0700, Yinghai Lu wrote: >> Jaswinder Singh Rajput wrote: >>> On Fri, 2009-03-13 at 21:03 +0530, Jaswinder Singh Rajput wrote: >>>> On Fri, 2009-03-13 at 02:34 +0000, Yinghai Lu wrote: >>>>> Commit-ID: 8ad9790588ee2e69118b2b294ddab6f3f0379ad9 >>>>> Gitweb: http://git.kernel.org/tip/8ad9790588ee2e69118b2b294ddab6f3f0379ad9 >>>>> Author: Yinghai Lu <yinghai@kernel.org> >>>>> AuthorDate: Thu, 12 Mar 2009 18:43:54 -0700 >>>>> Commit: Ingo Molnar <mingo@elte.hu> >>>>> CommitDate: Fri, 13 Mar 2009 02:52:18 +0100 >>>>> >>>>> x86: more MTRR debug printouts >>>>> >>>>> Impact: improve MTRR debugging messages >>>>> >>>>> There's still inefficiencies suspected with the MTRR sanitizing >>>>> code, so make sure we get all the info we need from a dmesg. >>>>> >>>>> - Remove unneeded mtrr_show >>>>> >>>>> (It will only printout one time by first cpu, so it is no big deal.) >>>>> >>>>> - Also print out directly from get_mtrr, because it doesn't update mtrr_state. >>>>> >>>>> Signed-off-by: Yinghai Lu <yinghai@kernel.org> >>>>> LKML-Reference: <49B9BA5A.40108@kernel.org> >>>>> Signed-off-by: Ingo Molnar <mingo@elte.hu> >>>>> >>>>> >>>>> *base = 0; >>>>> @@ -407,6 +410,10 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base, >>>>> *size = -mask_lo; >>>>> *base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT; >>>>> *type = base_lo & 0xff; >>>>> + >>>>> + printk(KERN_DEBUG " get_mtrr: cpu%d reg%02d base=%010lx size=%010lx %s\n", >>>>> + smp_processor_id(), reg, *base, *size, >>>>> + mtrr_attrib_to_str(*type & 0xff)); >>>>> } >>>>> >>>> This leads to: >>>> >>>> Kernel failure message 1: >>>> BUG: using smp_processor_id() in preemptible [00000000] code: Xorg/1983 >>>> caller is generic_get_mtrr+0x12a/0x146 >>>> Pid: 1983, comm: Xorg Not tainted 2.6.29-rc8-tip #81 SMP PREEMPT Fri Mar >>>> 13 20:43:36 IST 2009 >>>> Call Trace: >>>> [<c0412cc3>] ? printk+0x14/0x16 >>>> [<c02357e3>] debug_smp_processor_id+0xbb/0xd4 >>>> [<c010f0c3>] generic_get_mtrr+0x12a/0x146 >>>> [<c010e351>] mtrr_add_page+0x154/0x332 >>>> [<c010e7b1>] mtrr_file_add+0x72/0x86 >>>> [<c010e9e0>] mtrr_ioctl+0x21b/0x309 >>>> [<c01bc07d>] proc_reg_unlocked_ioctl+0x67/0xb2 >>>> [<c010e7c5>] ? mtrr_ioctl+0x0/0x309 >>>> [<c01bc016>] ? proc_reg_unlocked_ioctl+0x0/0xb2 >>>> [<c0194101>] vfs_ioctl+0x27/0x6e >>>> [<c0194680>] do_vfs_ioctl+0x46f/0x4a9 >>>> [<c017bfa5>] ? do_mmap_pgoff+0x1e3/0x22e >>>> [<c01898b0>] ? fget_light+0x40/0x130 >>>> [<c01946ee>] sys_ioctl+0x34/0x61 >>>> [<c0102c73>] sysenter_do_call+0x12/0x25 >>>> >> please check >> >> [PATCH] x86: fix get_mtrr warning about smp_processor_id with preempt >> >> Impact: fix warning >> >> Jaswinder noticed that there is warning about smp_processor_id() in get_mtrr >> >> try to fix it by use disable/enable to wrap it. >> >> Reported-by: Jaswinder Singh Rajput <jaswinder@kernel.org> >> Signed-off-by: Yinghai Lu <yinghai@kernel.org> > > Thanks, this fix the bug. > > But I am still not happy with ruining dmesg, It looks weird on 2 cpu > box, what will be the case for 16 or more cpus. > > We are supporting these output in /sys/kernel/x86/cpu/cpu*/mtrr/mtrr > through cpu_debug.c, why do not you use it and only flush this > information on panic: > > [ 0.000000] last_pfn = 0x3ff2f max_arch_pfn = 0x100000 > [ 0.000000] MTRR default type: uncachable > [ 0.000000] MTRR fixed ranges enabled: > [ 0.000000] 00000-0FFFF write-back > [ 0.000000] 10000-1FFFF write-back > [ 0.000000] 20000-2FFFF write-back > [ 0.000000] 30000-3FFFF write-back > [ 0.000000] 40000-4FFFF write-back > [ 0.000000] 50000-5FFFF write-back > [ 0.000000] 60000-6FFFF write-back > [ 0.000000] 70000-7FFFF write-back > [ 0.000000] 80000-83FFF write-back > [ 0.000000] 84000-87FFF write-back > [ 0.000000] 88000-8BFFF write-back > [ 0.000000] 8C000-8FFFF write-back > [ 0.000000] 90000-93FFF write-back > [ 0.000000] 94000-97FFF write-back > [ 0.000000] 98000-9BFFF write-back > [ 0.000000] 9C000-9FFFF write-back > [ 0.000000] A0000-A3FFF uncachable > [ 0.000000] A4000-A7FFF uncachable > [ 0.000000] A8000-ABFFF uncachable > [ 0.000000] AC000-AFFFF uncachable > [ 0.000000] B0000-B3FFF uncachable > [ 0.000000] B4000-B7FFF uncachable > [ 0.000000] B8000-BBFFF uncachable > [ 0.000000] BC000-BFFFF uncachable > [ 0.000000] C0000-C0FFF uncachable > [ 0.000000] C1000-C1FFF uncachable > [ 0.000000] C2000-C2FFF uncachable > [ 0.000000] C3000-C3FFF uncachable > [ 0.000000] C4000-C4FFF uncachable > [ 0.000000] C5000-C5FFF uncachable > [ 0.000000] C6000-C6FFF uncachable > [ 0.000000] C7000-C7FFF uncachable > [ 0.000000] C8000-C8FFF uncachable > [ 0.000000] C9000-C9FFF uncachable > [ 0.000000] CA000-CAFFF uncachable > [ 0.000000] CB000-CBFFF uncachable > [ 0.000000] CC000-CCFFF uncachable > [ 0.000000] CD000-CDFFF uncachable > [ 0.000000] CE000-CEFFF uncachable > [ 0.000000] CF000-CFFFF uncachable > [ 0.000000] D0000-D0FFF uncachable > [ 0.000000] D1000-D1FFF uncachable > [ 0.000000] D2000-D2FFF uncachable > [ 0.000000] D3000-D3FFF uncachable > [ 0.000000] D4000-D4FFF uncachable > [ 0.000000] D5000-D5FFF uncachable > [ 0.000000] D6000-D6FFF uncachable > [ 0.000000] D7000-D7FFF uncachable > [ 0.000000] D8000-D8FFF uncachable > [ 0.000000] D9000-D9FFF uncachable > [ 0.000000] DA000-DAFFF uncachable > [ 0.000000] DB000-DBFFF uncachable > [ 0.000000] DC000-DCFFF uncachable > [ 0.000000] DD000-DDFFF uncachable > [ 0.000000] DE000-DEFFF uncachable > [ 0.000000] DF000-DFFFF uncachable > [ 0.000000] E0000-E0FFF uncachable > [ 0.000000] E1000-E1FFF uncachable > [ 0.000000] E2000-E2FFF uncachable > [ 0.000000] E3000-E3FFF uncachable > [ 0.000000] E4000-E4FFF uncachable > [ 0.000000] E5000-E5FFF uncachable > [ 0.000000] E6000-E6FFF uncachable > [ 0.000000] E7000-E7FFF uncachable > [ 0.000000] E8000-E8FFF uncachable > [ 0.000000] E9000-E9FFF uncachable > [ 0.000000] EA000-EAFFF uncachable > [ 0.000000] EB000-EBFFF uncachable > [ 0.000000] EC000-ECFFF uncachable > [ 0.000000] ED000-EDFFF uncachable > [ 0.000000] EE000-EEFFF uncachable > [ 0.000000] EF000-EFFFF uncachable > [ 0.000000] F0000-F0FFF write-protect > [ 0.000000] F1000-F1FFF write-protect > [ 0.000000] F2000-F2FFF write-protect > [ 0.000000] F3000-F3FFF write-protect > [ 0.000000] F4000-F4FFF write-protect > [ 0.000000] F5000-F5FFF write-protect > [ 0.000000] F6000-F6FFF write-protect > [ 0.000000] F7000-F7FFF write-protect > [ 0.000000] F8000-F8FFF write-protect > [ 0.000000] F9000-F9FFF write-protect > [ 0.000000] FA000-FAFFF write-protect > [ 0.000000] FB000-FBFFF write-protect > [ 0.000000] FC000-FCFFF write-protect > [ 0.000000] FD000-FDFFF write-protect > [ 0.000000] FE000-FEFFF write-protect > [ 0.000000] FF000-FFFFF write-protect sent out other patch [PATCH] x86: print fixed mtrr out continuous part together it should reduce that to three lines. YH ^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [tip:x86/mtrr] x86: more MTRR debug printouts 2009-03-13 19:46 ` Yinghai Lu 2009-03-14 7:15 ` Jaswinder Singh Rajput @ 2009-03-14 11:18 ` Ingo Molnar 2009-03-14 11:30 ` Ingo Molnar 2009-03-14 11:39 ` [tip:x86/mtrr] x86: fix get_mtrr() warning about smp_processor_id() with CONFIG_PREEMPT=y Yinghai Lu 2 siblings, 1 reply; 19+ messages in thread From: Ingo Molnar @ 2009-03-14 11:18 UTC (permalink / raw) To: Yinghai Lu Cc: Jaswinder Singh Rajput, mingo, hpa, linux-kernel, tglx, linux-tip-commits * Yinghai Lu <yinghai@kernel.org> wrote: > + preempt_disable(); > + cpu = smp_processor_id(); in such cases it's better to use a get_cpu() / put_cpu() construct. Ingo ^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [tip:x86/mtrr] x86: more MTRR debug printouts 2009-03-14 11:18 ` Ingo Molnar @ 2009-03-14 11:30 ` Ingo Molnar 0 siblings, 0 replies; 19+ messages in thread From: Ingo Molnar @ 2009-03-14 11:30 UTC (permalink / raw) To: Yinghai Lu Cc: Jaswinder Singh Rajput, mingo, hpa, linux-kernel, tglx, linux-tip-commits * Ingo Molnar <mingo@elte.hu> wrote: > * Yinghai Lu <yinghai@kernel.org> wrote: > > > + preempt_disable(); > > + cpu = smp_processor_id(); > > in such cases it's better to use a get_cpu() / put_cpu() > construct. i've changed the code to do that. Ingo ^ permalink raw reply [flat|nested] 19+ messages in thread
* [tip:x86/mtrr] x86: fix get_mtrr() warning about smp_processor_id() with CONFIG_PREEMPT=y 2009-03-13 19:46 ` Yinghai Lu 2009-03-14 7:15 ` Jaswinder Singh Rajput 2009-03-14 11:18 ` Ingo Molnar @ 2009-03-14 11:39 ` Yinghai Lu 2 siblings, 0 replies; 19+ messages in thread From: Yinghai Lu @ 2009-03-14 11:39 UTC (permalink / raw) To: linux-tip-commits Cc: linux-kernel, hpa, mingo, yinghai, akpm, jaswinder, tglx, mingo Commit-ID: 63516ef6d6a8379ee5c32463efc6a75f9da8a309 Gitweb: http://git.kernel.org/tip/63516ef6d6a8379ee5c32463efc6a75f9da8a309 Author: Yinghai Lu <yinghai@kernel.org> AuthorDate: Fri, 13 Mar 2009 12:46:07 -0700 Commit: Ingo Molnar <mingo@elte.hu> CommitDate: Sat, 14 Mar 2009 12:27:06 +0100 x86: fix get_mtrr() warning about smp_processor_id() with CONFIG_PREEMPT=y Impact: fix debug warning Jaswinder noticed that there is a warning about smp_processor_id() in get_mtrr(). Fix it by wrapping the printout into a get/put_cpu() pair. Reported-by: Jaswinder Singh Rajput <jaswinder@kernel.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <49BAB7FF.4030107@kernel.org> [ changed to get/put_cpu(), cleaned up surrounding code a it. ] Signed-off-by: Ingo Molnar <mingo@elte.hu> --- arch/x86/kernel/cpu/mtrr/generic.c | 20 ++++++++++++++------ 1 files changed, 14 insertions(+), 6 deletions(-) diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c index 950c434..641ee35 100644 --- a/arch/x86/kernel/cpu/mtrr/generic.c +++ b/arch/x86/kernel/cpu/mtrr/generic.c @@ -381,11 +381,14 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base, { unsigned int mask_lo, mask_hi, base_lo, base_hi; unsigned int tmp, hi; + int cpu; /* * get_mtrr doesn't need to update mtrr_state, also it could be called * from any cpu, so try to print it out directly. */ + cpu = get_cpu(); + rdmsr(MTRRphysMask_MSR(reg), mask_lo, mask_hi); if ((mask_lo & 0x800) == 0) { @@ -393,15 +396,16 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base, *base = 0; *size = 0; *type = 0; - return; + goto out_put_cpu; } rdmsr(MTRRphysBase_MSR(reg), base_lo, base_hi); - /* Work out the shifted address mask. */ + /* Work out the shifted address mask: */ tmp = mask_hi << (32 - PAGE_SHIFT) | mask_lo >> PAGE_SHIFT; mask_lo = size_or_mask | tmp; - /* Expand tmp with high bits to all 1s*/ + + /* Expand tmp with high bits to all 1s: */ hi = fls(tmp); if (hi > 0) { tmp |= ~((1<<(hi - 1)) - 1); @@ -412,15 +416,19 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base, } } - /* This works correctly if size is a power of two, i.e. a - contiguous range. */ + /* + * This works correctly if size is a power of two, i.e. a + * contiguous range: + */ *size = -mask_lo; *base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT; *type = base_lo & 0xff; printk(KERN_DEBUG " get_mtrr: cpu%d reg%02d base=%010lx size=%010lx %s\n", - smp_processor_id(), reg, *base, *size, + cpu, reg, *base, *size, mtrr_attrib_to_str(*type & 0xff)); +out_put_cpu: + put_cpu(); } /** ^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH] x86: print out mtrr_range_state when user specify size 2009-03-13 1:40 ` [PATCH] x86: more debug print out with mtrr Ingo Molnar 2009-03-13 1:43 ` Yinghai Lu @ 2009-03-13 1:44 ` Yinghai Lu 2009-03-13 1:45 ` [PATCH] x86: seperate mtrr cleanup/mtrr_e820 trim to seperated file Yinghai Lu 2 siblings, 0 replies; 19+ messages in thread From: Yinghai Lu @ 2009-03-13 1:44 UTC (permalink / raw) To: Ingo Molnar, Thomas Gleixner, H. Peter Anvin; +Cc: linux-kernel@vger.kernel.org Impact: print more info so keep it consistent with autodetect version Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- arch/x86/kernel/cpu/mtrr/main.c | 2 ++ 1 file changed, 2 insertions(+) Index: linux-2.6/arch/x86/kernel/cpu/mtrr/main.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/main.c +++ linux-2.6/arch/x86/kernel/cpu/mtrr/main.c @@ -1424,6 +1424,8 @@ static int __init mtrr_cleanup(unsigned if (!result[i].bad) { set_var_mtrr_all(address_bits); + printk(KERN_DEBUG "New variable MTRRs\n"); + print_out_mtrr_range_state(); return 1; } printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, " ^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH] x86: seperate mtrr cleanup/mtrr_e820 trim to seperated file 2009-03-13 1:40 ` [PATCH] x86: more debug print out with mtrr Ingo Molnar 2009-03-13 1:43 ` Yinghai Lu 2009-03-13 1:44 ` [PATCH] x86: print out mtrr_range_state when user specify size Yinghai Lu @ 2009-03-13 1:45 ` Yinghai Lu 2 siblings, 0 replies; 19+ messages in thread From: Yinghai Lu @ 2009-03-13 1:45 UTC (permalink / raw) To: Ingo Molnar, Thomas Gleixner, H. Peter Anvin; +Cc: linux-kernel@vger.kernel.org Impact: cleanup mtrr main.c is too big, try to seperate mtrr cleanup and mtrr e820 trim code to another files Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- arch/x86/kernel/cpu/mtrr/Makefile | 2 arch/x86/kernel/cpu/mtrr/cleanup.c | 1089 +++++++++++++++++++++++++++++++++++++ arch/x86/kernel/cpu/mtrr/main.c | 1055 ----------------------------------- arch/x86/kernel/cpu/mtrr/mtrr.h | 3 4 files changed, 1094 insertions(+), 1055 deletions(-) Index: linux-2.6/arch/x86/kernel/cpu/mtrr/main.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/main.c +++ linux-2.6/arch/x86/kernel/cpu/mtrr/main.c @@ -610,1060 +610,7 @@ static struct sysdev_driver mtrr_sysdev_ .resume = mtrr_restore, }; -/* should be related to MTRR_VAR_RANGES nums */ -#define RANGE_NUM 256 - -struct res_range { - unsigned long start; - unsigned long end; -}; - -static int __init -add_range(struct res_range *range, int nr_range, unsigned long start, - unsigned long end) -{ - /* out of slots */ - if (nr_range >= RANGE_NUM) - return nr_range; - - range[nr_range].start = start; - range[nr_range].end = end; - - nr_range++; - - return nr_range; -} - -static int __init -add_range_with_merge(struct res_range *range, int nr_range, unsigned long start, - unsigned long end) -{ - int i; - - /* try to merge it with old one */ - for (i = 0; i < nr_range; i++) { - unsigned long final_start, final_end; - unsigned long common_start, common_end; - - if (!range[i].end) - continue; - - common_start = max(range[i].start, start); - common_end = min(range[i].end, end); - if (common_start > common_end + 1) - continue; - - final_start = min(range[i].start, start); - final_end = max(range[i].end, end); - - range[i].start = final_start; - range[i].end = final_end; - return nr_range; - } - - /* need to add that */ - return add_range(range, nr_range, start, end); -} - -static void __init -subtract_range(struct res_range *range, unsigned long start, unsigned long end) -{ - int i, j; - - for (j = 0; j < RANGE_NUM; j++) { - if (!range[j].end) - continue; - - if (start <= range[j].start && end >= range[j].end) { - range[j].start = 0; - range[j].end = 0; - continue; - } - - if (start <= range[j].start && end < range[j].end && - range[j].start < end + 1) { - range[j].start = end + 1; - continue; - } - - - if (start > range[j].start && end >= range[j].end && - range[j].end > start - 1) { - range[j].end = start - 1; - continue; - } - - if (start > range[j].start && end < range[j].end) { - /* find the new spare */ - for (i = 0; i < RANGE_NUM; i++) { - if (range[i].end == 0) - break; - } - if (i < RANGE_NUM) { - range[i].end = range[j].end; - range[i].start = end + 1; - } else { - printk(KERN_ERR "run of slot in ranges\n"); - } - range[j].end = start - 1; - continue; - } - } -} - -static int __init cmp_range(const void *x1, const void *x2) -{ - const struct res_range *r1 = x1; - const struct res_range *r2 = x2; - long start1, start2; - - start1 = r1->start; - start2 = r2->start; - - return start1 - start2; -} - -struct var_mtrr_range_state { - unsigned long base_pfn; - unsigned long size_pfn; - mtrr_type type; -}; - -static struct var_mtrr_range_state __initdata range_state[RANGE_NUM]; -static int __initdata debug_print; - -static int __init -x86_get_mtrr_mem_range(struct res_range *range, int nr_range, - unsigned long extra_remove_base, - unsigned long extra_remove_size) -{ - unsigned long i, base, size; - mtrr_type type; - - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type != MTRR_TYPE_WRBACK) - continue; - base = range_state[i].base_pfn; - size = range_state[i].size_pfn; - nr_range = add_range_with_merge(range, nr_range, base, - base + size - 1); - } - if (debug_print) { - printk(KERN_DEBUG "After WB checking\n"); - for (i = 0; i < nr_range; i++) - printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", - range[i].start, range[i].end + 1); - } - - /* take out UC ranges */ - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type != MTRR_TYPE_UNCACHABLE && - type != MTRR_TYPE_WRPROT) - continue; - size = range_state[i].size_pfn; - if (!size) - continue; - base = range_state[i].base_pfn; - subtract_range(range, base, base + size - 1); - } - if (extra_remove_size) - subtract_range(range, extra_remove_base, - extra_remove_base + extra_remove_size - 1); - - /* get new range num */ - nr_range = 0; - for (i = 0; i < RANGE_NUM; i++) { - if (!range[i].end) - continue; - nr_range++; - } - if (debug_print) { - printk(KERN_DEBUG "After UC checking\n"); - for (i = 0; i < nr_range; i++) - printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", - range[i].start, range[i].end + 1); - } - - /* sort the ranges */ - sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); - if (debug_print) { - printk(KERN_DEBUG "After sorting\n"); - for (i = 0; i < nr_range; i++) - printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", - range[i].start, range[i].end + 1); - } - - /* clear those is not used */ - for (i = nr_range; i < RANGE_NUM; i++) - memset(&range[i], 0, sizeof(range[i])); - - return nr_range; -} - -static struct res_range __initdata range[RANGE_NUM]; -static int __initdata nr_range; - -#ifdef CONFIG_MTRR_SANITIZER - -static unsigned long __init sum_ranges(struct res_range *range, int nr_range) -{ - unsigned long sum; - int i; - - sum = 0; - for (i = 0; i < nr_range; i++) - sum += range[i].end + 1 - range[i].start; - - return sum; -} - -static int enable_mtrr_cleanup __initdata = - CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT; - -static int __init disable_mtrr_cleanup_setup(char *str) -{ - enable_mtrr_cleanup = 0; - return 0; -} -early_param("disable_mtrr_cleanup", disable_mtrr_cleanup_setup); - -static int __init enable_mtrr_cleanup_setup(char *str) -{ - enable_mtrr_cleanup = 1; - return 0; -} -early_param("enable_mtrr_cleanup", enable_mtrr_cleanup_setup); - -static int __init mtrr_cleanup_debug_setup(char *str) -{ - debug_print = 1; - return 0; -} -early_param("mtrr_cleanup_debug", mtrr_cleanup_debug_setup); - -struct var_mtrr_state { - unsigned long range_startk; - unsigned long range_sizek; - unsigned long chunk_sizek; - unsigned long gran_sizek; - unsigned int reg; -}; - -static void __init -set_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, - unsigned char type, unsigned int address_bits) -{ - u32 base_lo, base_hi, mask_lo, mask_hi; - u64 base, mask; - - if (!sizek) { - fill_mtrr_var_range(reg, 0, 0, 0, 0); - return; - } - - mask = (1ULL << address_bits) - 1; - mask &= ~((((u64)sizek) << 10) - 1); - - base = ((u64)basek) << 10; - - base |= type; - mask |= 0x800; - - base_lo = base & ((1ULL<<32) - 1); - base_hi = base >> 32; - - mask_lo = mask & ((1ULL<<32) - 1); - mask_hi = mask >> 32; - - fill_mtrr_var_range(reg, base_lo, base_hi, mask_lo, mask_hi); -} - -static void __init -save_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, - unsigned char type) -{ - range_state[reg].base_pfn = basek >> (PAGE_SHIFT - 10); - range_state[reg].size_pfn = sizek >> (PAGE_SHIFT - 10); - range_state[reg].type = type; -} - -static void __init -set_var_mtrr_all(unsigned int address_bits) -{ - unsigned long basek, sizek; - unsigned char type; - unsigned int reg; - - for (reg = 0; reg < num_var_ranges; reg++) { - basek = range_state[reg].base_pfn << (PAGE_SHIFT - 10); - sizek = range_state[reg].size_pfn << (PAGE_SHIFT - 10); - type = range_state[reg].type; - - set_var_mtrr(reg, basek, sizek, type, address_bits); - } -} - -static unsigned long to_size_factor(unsigned long sizek, char *factorp) -{ - char factor; - unsigned long base = sizek; - - if (base & ((1<<10) - 1)) { - /* not MB alignment */ - factor = 'K'; - } else if (base & ((1<<20) - 1)){ - factor = 'M'; - base >>= 10; - } else { - factor = 'G'; - base >>= 20; - } - - *factorp = factor; - - return base; -} - -static unsigned int __init -range_to_mtrr(unsigned int reg, unsigned long range_startk, - unsigned long range_sizek, unsigned char type) -{ - if (!range_sizek || (reg >= num_var_ranges)) - return reg; - - while (range_sizek) { - unsigned long max_align, align; - unsigned long sizek; - - /* Compute the maximum size I can make a range */ - if (range_startk) - max_align = ffs(range_startk) - 1; - else - max_align = 32; - align = fls(range_sizek) - 1; - if (align > max_align) - align = max_align; - - sizek = 1 << align; - if (debug_print) { - char start_factor = 'K', size_factor = 'K'; - unsigned long start_base, size_base; - - start_base = to_size_factor(range_startk, &start_factor), - size_base = to_size_factor(sizek, &size_factor), - - printk(KERN_DEBUG "Setting variable MTRR %d, " - "base: %ld%cB, range: %ld%cB, type %s\n", - reg, start_base, start_factor, - size_base, size_factor, - (type == MTRR_TYPE_UNCACHABLE)?"UC": - ((type == MTRR_TYPE_WRBACK)?"WB":"Other") - ); - } - save_var_mtrr(reg++, range_startk, sizek, type); - range_startk += sizek; - range_sizek -= sizek; - if (reg >= num_var_ranges) - break; - } - return reg; -} - -static unsigned __init -range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek, - unsigned long sizek) -{ - unsigned long hole_basek, hole_sizek; - unsigned long second_basek, second_sizek; - unsigned long range0_basek, range0_sizek; - unsigned long range_basek, range_sizek; - unsigned long chunk_sizek; - unsigned long gran_sizek; - - hole_basek = 0; - hole_sizek = 0; - second_basek = 0; - second_sizek = 0; - chunk_sizek = state->chunk_sizek; - gran_sizek = state->gran_sizek; - - /* align with gran size, prevent small block used up MTRRs */ - range_basek = ALIGN(state->range_startk, gran_sizek); - if ((range_basek > basek) && basek) - return second_sizek; - state->range_sizek -= (range_basek - state->range_startk); - range_sizek = ALIGN(state->range_sizek, gran_sizek); - - while (range_sizek > state->range_sizek) { - range_sizek -= gran_sizek; - if (!range_sizek) - return 0; - } - state->range_sizek = range_sizek; - - /* try to append some small hole */ - range0_basek = state->range_startk; - range0_sizek = ALIGN(state->range_sizek, chunk_sizek); - - /* no increase */ - if (range0_sizek == state->range_sizek) { - if (debug_print) - printk(KERN_DEBUG "rangeX: %016lx - %016lx\n", - range0_basek<<10, - (range0_basek + state->range_sizek)<<10); - state->reg = range_to_mtrr(state->reg, range0_basek, - state->range_sizek, MTRR_TYPE_WRBACK); - return 0; - } - - /* only cut back, when it is not the last */ - if (sizek) { - while (range0_basek + range0_sizek > (basek + sizek)) { - if (range0_sizek >= chunk_sizek) - range0_sizek -= chunk_sizek; - else - range0_sizek = 0; - - if (!range0_sizek) - break; - } - } - -second_try: - range_basek = range0_basek + range0_sizek; - - /* one hole in the middle */ - if (range_basek > basek && range_basek <= (basek + sizek)) - second_sizek = range_basek - basek; - - if (range0_sizek > state->range_sizek) { - - /* one hole in middle or at end */ - hole_sizek = range0_sizek - state->range_sizek - second_sizek; - - /* hole size should be less than half of range0 size */ - if (hole_sizek >= (range0_sizek >> 1) && - range0_sizek >= chunk_sizek) { - range0_sizek -= chunk_sizek; - second_sizek = 0; - hole_sizek = 0; - - goto second_try; - } - } - - if (range0_sizek) { - if (debug_print) - printk(KERN_DEBUG "range0: %016lx - %016lx\n", - range0_basek<<10, - (range0_basek + range0_sizek)<<10); - state->reg = range_to_mtrr(state->reg, range0_basek, - range0_sizek, MTRR_TYPE_WRBACK); - } - - if (range0_sizek < state->range_sizek) { - /* need to handle left over */ - range_sizek = state->range_sizek - range0_sizek; - - if (debug_print) - printk(KERN_DEBUG "range: %016lx - %016lx\n", - range_basek<<10, - (range_basek + range_sizek)<<10); - state->reg = range_to_mtrr(state->reg, range_basek, - range_sizek, MTRR_TYPE_WRBACK); - } - - if (hole_sizek) { - hole_basek = range_basek - hole_sizek - second_sizek; - if (debug_print) - printk(KERN_DEBUG "hole: %016lx - %016lx\n", - hole_basek<<10, - (hole_basek + hole_sizek)<<10); - state->reg = range_to_mtrr(state->reg, hole_basek, - hole_sizek, MTRR_TYPE_UNCACHABLE); - } - - return second_sizek; -} - -static void __init -set_var_mtrr_range(struct var_mtrr_state *state, unsigned long base_pfn, - unsigned long size_pfn) -{ - unsigned long basek, sizek; - unsigned long second_sizek = 0; - - if (state->reg >= num_var_ranges) - return; - - basek = base_pfn << (PAGE_SHIFT - 10); - sizek = size_pfn << (PAGE_SHIFT - 10); - - /* See if I can merge with the last range */ - if ((basek <= 1024) || - (state->range_startk + state->range_sizek == basek)) { - unsigned long endk = basek + sizek; - state->range_sizek = endk - state->range_startk; - return; - } - /* Write the range mtrrs */ - if (state->range_sizek != 0) - second_sizek = range_to_mtrr_with_hole(state, basek, sizek); - - /* Allocate an msr */ - state->range_startk = basek + second_sizek; - state->range_sizek = sizek - second_sizek; -} - -/* mininum size of mtrr block that can take hole */ -static u64 mtrr_chunk_size __initdata = (256ULL<<20); - -static int __init parse_mtrr_chunk_size_opt(char *p) -{ - if (!p) - return -EINVAL; - mtrr_chunk_size = memparse(p, &p); - return 0; -} -early_param("mtrr_chunk_size", parse_mtrr_chunk_size_opt); - -/* granity of mtrr of block */ -static u64 mtrr_gran_size __initdata; - -static int __init parse_mtrr_gran_size_opt(char *p) -{ - if (!p) - return -EINVAL; - mtrr_gran_size = memparse(p, &p); - return 0; -} -early_param("mtrr_gran_size", parse_mtrr_gran_size_opt); - -static int nr_mtrr_spare_reg __initdata = - CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT; - -static int __init parse_mtrr_spare_reg(char *arg) -{ - if (arg) - nr_mtrr_spare_reg = simple_strtoul(arg, NULL, 0); - return 0; -} - -early_param("mtrr_spare_reg_nr", parse_mtrr_spare_reg); - -static int __init -x86_setup_var_mtrrs(struct res_range *range, int nr_range, - u64 chunk_size, u64 gran_size) -{ - struct var_mtrr_state var_state; - int i; - int num_reg; - - var_state.range_startk = 0; - var_state.range_sizek = 0; - var_state.reg = 0; - var_state.chunk_sizek = chunk_size >> 10; - var_state.gran_sizek = gran_size >> 10; - - memset(range_state, 0, sizeof(range_state)); - - /* Write the range etc */ - for (i = 0; i < nr_range; i++) - set_var_mtrr_range(&var_state, range[i].start, - range[i].end - range[i].start + 1); - - /* Write the last range */ - if (var_state.range_sizek != 0) - range_to_mtrr_with_hole(&var_state, 0, 0); - - num_reg = var_state.reg; - /* Clear out the extra MTRR's */ - while (var_state.reg < num_var_ranges) { - save_var_mtrr(var_state.reg, 0, 0, 0); - var_state.reg++; - } - - return num_reg; -} - -struct mtrr_cleanup_result { - unsigned long gran_sizek; - unsigned long chunk_sizek; - unsigned long lose_cover_sizek; - unsigned int num_reg; - int bad; -}; - -/* - * gran_size: 64K, 128K, 256K, 512K, 1M, 2M, ..., 2G - * chunk size: gran_size, ..., 2G - * so we need (1+16)*8 - */ -#define NUM_RESULT 136 -#define PSHIFT (PAGE_SHIFT - 10) - -static struct mtrr_cleanup_result __initdata result[NUM_RESULT]; -static unsigned long __initdata min_loss_pfn[RANGE_NUM]; - -static void __init print_out_mtrr_range_state(void) -{ - int i; - char start_factor = 'K', size_factor = 'K'; - unsigned long start_base, size_base; - mtrr_type type; - - for (i = 0; i < num_var_ranges; i++) { - - size_base = range_state[i].size_pfn << (PAGE_SHIFT - 10); - if (!size_base) - continue; - - size_base = to_size_factor(size_base, &size_factor), - start_base = range_state[i].base_pfn << (PAGE_SHIFT - 10); - start_base = to_size_factor(start_base, &start_factor), - type = range_state[i].type; - - printk(KERN_DEBUG "reg %d, base: %ld%cB, range: %ld%cB, type %s\n", - i, start_base, start_factor, - size_base, size_factor, - (type == MTRR_TYPE_UNCACHABLE) ? "UC" : - ((type == MTRR_TYPE_WRPROT) ? "WP" : - ((type == MTRR_TYPE_WRBACK) ? "WB" : "Other")) - ); - } -} - -static int __init mtrr_need_cleanup(void) -{ - int i; - mtrr_type type; - unsigned long size; - /* extra one for all 0 */ - int num[MTRR_NUM_TYPES + 1]; - - /* check entries number */ - memset(num, 0, sizeof(num)); - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - size = range_state[i].size_pfn; - if (type >= MTRR_NUM_TYPES) - continue; - if (!size) - type = MTRR_NUM_TYPES; - if (type == MTRR_TYPE_WRPROT) - type = MTRR_TYPE_UNCACHABLE; - num[type]++; - } - - /* check if we got UC entries */ - if (!num[MTRR_TYPE_UNCACHABLE]) - return 0; - - /* check if we only had WB and UC */ - if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != - num_var_ranges - num[MTRR_NUM_TYPES]) - return 0; - - return 1; -} - -static unsigned long __initdata range_sums; -static void __init mtrr_calc_range_state(u64 chunk_size, u64 gran_size, - unsigned long extra_remove_base, - unsigned long extra_remove_size, - int i) -{ - int num_reg; - static struct res_range range_new[RANGE_NUM]; - static int nr_range_new; - unsigned long range_sums_new; - - /* convert ranges to var ranges state */ - num_reg = x86_setup_var_mtrrs(range, nr_range, - chunk_size, gran_size); - - /* we got new setting in range_state, check it */ - memset(range_new, 0, sizeof(range_new)); - nr_range_new = x86_get_mtrr_mem_range(range_new, 0, - extra_remove_base, extra_remove_size); - range_sums_new = sum_ranges(range_new, nr_range_new); - - result[i].chunk_sizek = chunk_size >> 10; - result[i].gran_sizek = gran_size >> 10; - result[i].num_reg = num_reg; - if (range_sums < range_sums_new) { - result[i].lose_cover_sizek = - (range_sums_new - range_sums) << PSHIFT; - result[i].bad = 1; - } else - result[i].lose_cover_sizek = - (range_sums - range_sums_new) << PSHIFT; - - /* double check it */ - if (!result[i].bad && !result[i].lose_cover_sizek) { - if (nr_range_new != nr_range || - memcmp(range, range_new, sizeof(range))) - result[i].bad = 1; - } - - if (!result[i].bad && (range_sums - range_sums_new < - min_loss_pfn[num_reg])) { - min_loss_pfn[num_reg] = - range_sums - range_sums_new; - } -} - -static void __init mtrr_print_out_one_result(int i) -{ - char gran_factor, chunk_factor, lose_factor; - unsigned long gran_base, chunk_base, lose_base; - - gran_base = to_size_factor(result[i].gran_sizek, &gran_factor), - chunk_base = to_size_factor(result[i].chunk_sizek, &chunk_factor), - lose_base = to_size_factor(result[i].lose_cover_sizek, &lose_factor), - printk(KERN_INFO "%sgran_size: %ld%c \tchunk_size: %ld%c \t", - result[i].bad ? "*BAD*" : " ", - gran_base, gran_factor, chunk_base, chunk_factor); - printk(KERN_CONT "num_reg: %d \tlose cover RAM: %s%ld%c\n", - result[i].num_reg, result[i].bad ? "-" : "", - lose_base, lose_factor); -} - -static int __init mtrr_search_optimal_index(void) -{ - int i; - int num_reg_good; - int index_good; - - if (nr_mtrr_spare_reg >= num_var_ranges) - nr_mtrr_spare_reg = num_var_ranges - 1; - num_reg_good = -1; - for (i = num_var_ranges - nr_mtrr_spare_reg; i > 0; i--) { - if (!min_loss_pfn[i]) - num_reg_good = i; - } - - index_good = -1; - if (num_reg_good != -1) { - for (i = 0; i < NUM_RESULT; i++) { - if (!result[i].bad && - result[i].num_reg == num_reg_good && - !result[i].lose_cover_sizek) { - index_good = i; - break; - } - } - } - - return index_good; -} - - -static int __init mtrr_cleanup(unsigned address_bits) -{ - unsigned long extra_remove_base, extra_remove_size; - unsigned long base, size, def, dummy; - mtrr_type type; - u64 chunk_size, gran_size; - int index_good; - int i; - - if (!is_cpu(INTEL) || enable_mtrr_cleanup < 1) - return 0; - rdmsr(MTRRdefType_MSR, def, dummy); - def &= 0xff; - if (def != MTRR_TYPE_UNCACHABLE) - return 0; - - /* get it and store it aside */ - memset(range_state, 0, sizeof(range_state)); - for (i = 0; i < num_var_ranges; i++) { - mtrr_if->get(i, &base, &size, &type); - range_state[i].base_pfn = base; - range_state[i].size_pfn = size; - range_state[i].type = type; - } - - /* check if we need handle it and can handle it */ - if (!mtrr_need_cleanup()) - return 0; - - /* print original var MTRRs at first, for debugging: */ - printk(KERN_DEBUG "original variable MTRRs\n"); - print_out_mtrr_range_state(); - - memset(range, 0, sizeof(range)); - extra_remove_size = 0; - extra_remove_base = 1 << (32 - PAGE_SHIFT); - if (mtrr_tom2) - extra_remove_size = - (mtrr_tom2 >> PAGE_SHIFT) - extra_remove_base; - nr_range = x86_get_mtrr_mem_range(range, 0, extra_remove_base, - extra_remove_size); - /* - * [0, 1M) should always be coverred by var mtrr with WB - * and fixed mtrrs should take effective before var mtrr for it - */ - nr_range = add_range_with_merge(range, nr_range, 0, - (1ULL<<(20 - PAGE_SHIFT)) - 1); - /* sort the ranges */ - sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); - - range_sums = sum_ranges(range, nr_range); - printk(KERN_INFO "total RAM coverred: %ldM\n", - range_sums >> (20 - PAGE_SHIFT)); - - if (mtrr_chunk_size && mtrr_gran_size) { - i = 0; - mtrr_calc_range_state(mtrr_chunk_size, mtrr_gran_size, - extra_remove_base, extra_remove_size, i); - - mtrr_print_out_one_result(i); - - if (!result[i].bad) { - set_var_mtrr_all(address_bits); - printk(KERN_DEBUG "New variable MTRRs\n"); - print_out_mtrr_range_state(); - return 1; - } - printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, " - "will find optimal one\n"); - } - - i = 0; - memset(min_loss_pfn, 0xff, sizeof(min_loss_pfn)); - memset(result, 0, sizeof(result)); - for (gran_size = (1ULL<<16); gran_size < (1ULL<<32); gran_size <<= 1) { - - for (chunk_size = gran_size; chunk_size < (1ULL<<32); - chunk_size <<= 1) { - - if (i >= NUM_RESULT) - continue; - - mtrr_calc_range_state(chunk_size, gran_size, - extra_remove_base, extra_remove_size, i); - if (debug_print) { - mtrr_print_out_one_result(i); - printk(KERN_INFO "\n"); - } - - i++; - } - } - - /* try to find the optimal index */ - index_good = mtrr_search_optimal_index(); - - if (index_good != -1) { - printk(KERN_INFO "Found optimal setting for mtrr clean up\n"); - i = index_good; - mtrr_print_out_one_result(i); - - /* convert ranges to var ranges state */ - chunk_size = result[i].chunk_sizek; - chunk_size <<= 10; - gran_size = result[i].gran_sizek; - gran_size <<= 10; - x86_setup_var_mtrrs(range, nr_range, chunk_size, gran_size); - set_var_mtrr_all(address_bits); - printk(KERN_DEBUG "New variable MTRRs\n"); - print_out_mtrr_range_state(); - return 1; - } else { - /* print out all */ - for (i = 0; i < NUM_RESULT; i++) - mtrr_print_out_one_result(i); - } - - printk(KERN_INFO "mtrr_cleanup: can not find optimal value\n"); - printk(KERN_INFO "please specify mtrr_gran_size/mtrr_chunk_size\n"); - - return 0; -} -#else -static int __init mtrr_cleanup(unsigned address_bits) -{ - return 0; -} -#endif - -static int __initdata changed_by_mtrr_cleanup; - -static int disable_mtrr_trim; - -static int __init disable_mtrr_trim_setup(char *str) -{ - disable_mtrr_trim = 1; - return 0; -} -early_param("disable_mtrr_trim", disable_mtrr_trim_setup); - -/* - * Newer AMD K8s and later CPUs have a special magic MSR way to force WB - * for memory >4GB. Check for that here. - * Note this won't check if the MTRRs < 4GB where the magic bit doesn't - * apply to are wrong, but so far we don't know of any such case in the wild. - */ -#define Tom2Enabled (1U << 21) -#define Tom2ForceMemTypeWB (1U << 22) - -int __init amd_special_default_mtrr(void) -{ - u32 l, h; - - if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) - return 0; - if (boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x11) - return 0; - /* In case some hypervisor doesn't pass SYSCFG through */ - if (rdmsr_safe(MSR_K8_SYSCFG, &l, &h) < 0) - return 0; - /* - * Memory between 4GB and top of mem is forced WB by this magic bit. - * Reserved before K8RevF, but should be zero there. - */ - if ((l & (Tom2Enabled | Tom2ForceMemTypeWB)) == - (Tom2Enabled | Tom2ForceMemTypeWB)) - return 1; - return 0; -} - -static u64 __init real_trim_memory(unsigned long start_pfn, - unsigned long limit_pfn) -{ - u64 trim_start, trim_size; - trim_start = start_pfn; - trim_start <<= PAGE_SHIFT; - trim_size = limit_pfn; - trim_size <<= PAGE_SHIFT; - trim_size -= trim_start; - - return e820_update_range(trim_start, trim_size, E820_RAM, - E820_RESERVED); -} -/** - * mtrr_trim_uncached_memory - trim RAM not covered by MTRRs - * @end_pfn: ending page frame number - * - * Some buggy BIOSes don't setup the MTRRs properly for systems with certain - * memory configurations. This routine checks that the highest MTRR matches - * the end of memory, to make sure the MTRRs having a write back type cover - * all of the memory the kernel is intending to use. If not, it'll trim any - * memory off the end by adjusting end_pfn, removing it from the kernel's - * allocation pools, warning the user with an obnoxious message. - */ -int __init mtrr_trim_uncached_memory(unsigned long end_pfn) -{ - unsigned long i, base, size, highest_pfn = 0, def, dummy; - mtrr_type type; - u64 total_trim_size; - - /* extra one for all 0 */ - int num[MTRR_NUM_TYPES + 1]; - /* - * Make sure we only trim uncachable memory on machines that - * support the Intel MTRR architecture: - */ - if (!is_cpu(INTEL) || disable_mtrr_trim) - return 0; - rdmsr(MTRRdefType_MSR, def, dummy); - def &= 0xff; - if (def != MTRR_TYPE_UNCACHABLE) - return 0; - - /* get it and store it aside */ - memset(range_state, 0, sizeof(range_state)); - for (i = 0; i < num_var_ranges; i++) { - mtrr_if->get(i, &base, &size, &type); - range_state[i].base_pfn = base; - range_state[i].size_pfn = size; - range_state[i].type = type; - } - - /* Find highest cached pfn */ - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type != MTRR_TYPE_WRBACK) - continue; - base = range_state[i].base_pfn; - size = range_state[i].size_pfn; - if (highest_pfn < base + size) - highest_pfn = base + size; - } - - /* kvm/qemu doesn't have mtrr set right, don't trim them all */ - if (!highest_pfn) { - printk(KERN_INFO "CPU MTRRs all blank - virtualized system.\n"); - return 0; - } - - /* check entries number */ - memset(num, 0, sizeof(num)); - for (i = 0; i < num_var_ranges; i++) { - type = range_state[i].type; - if (type >= MTRR_NUM_TYPES) - continue; - size = range_state[i].size_pfn; - if (!size) - type = MTRR_NUM_TYPES; - num[type]++; - } - - /* no entry for WB? */ - if (!num[MTRR_TYPE_WRBACK]) - return 0; - - /* check if we only had WB and UC */ - if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != - num_var_ranges - num[MTRR_NUM_TYPES]) - return 0; - - memset(range, 0, sizeof(range)); - nr_range = 0; - if (mtrr_tom2) { - range[nr_range].start = (1ULL<<(32 - PAGE_SHIFT)); - range[nr_range].end = (mtrr_tom2 >> PAGE_SHIFT) - 1; - if (highest_pfn < range[nr_range].end + 1) - highest_pfn = range[nr_range].end + 1; - nr_range++; - } - nr_range = x86_get_mtrr_mem_range(range, nr_range, 0, 0); - - total_trim_size = 0; - /* check the head */ - if (range[0].start) - total_trim_size += real_trim_memory(0, range[0].start); - /* check the holes */ - for (i = 0; i < nr_range - 1; i++) { - if (range[i].end + 1 < range[i+1].start) - total_trim_size += real_trim_memory(range[i].end + 1, - range[i+1].start); - } - /* check the top */ - i = nr_range - 1; - if (range[i].end + 1 < end_pfn) - total_trim_size += real_trim_memory(range[i].end + 1, - end_pfn); - - if (total_trim_size) { - printk(KERN_WARNING "WARNING: BIOS bug: CPU MTRRs don't cover" - " all of memory, losing %lluMB of RAM.\n", - total_trim_size >> 20); - - if (!changed_by_mtrr_cleanup) - WARN_ON(1); - - printk(KERN_INFO "update e820 for mtrr\n"); - update_e820(); - - return 1; - } - - return 0; -} +int __initdata changed_by_mtrr_cleanup; /** * mtrr_bp_init - initialize mtrrs on the boot CPU Index: linux-2.6/arch/x86/kernel/cpu/mtrr/mtrr.h =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/mtrr.h +++ linux-2.6/arch/x86/kernel/cpu/mtrr/mtrr.h @@ -88,3 +88,6 @@ void mtrr_wrmsr(unsigned, unsigned, unsi int amd_init_mtrr(void); int cyrix_init_mtrr(void); int centaur_init_mtrr(void); + +extern int changed_by_mtrr_cleanup; +extern int mtrr_cleanup(unsigned address_bits); Index: linux-2.6/arch/x86/kernel/cpu/mtrr/Makefile =================================================================== --- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/Makefile +++ linux-2.6/arch/x86/kernel/cpu/mtrr/Makefile @@ -1,3 +1,3 @@ -obj-y := main.o if.o generic.o state.o +obj-y := main.o if.o generic.o state.o cleanup.o obj-$(CONFIG_X86_32) += amd.o cyrix.o centaur.o Index: linux-2.6/arch/x86/kernel/cpu/mtrr/cleanup.c =================================================================== --- /dev/null +++ linux-2.6/arch/x86/kernel/cpu/mtrr/cleanup.c @@ -0,0 +1,1089 @@ +/* MTRR (Memory Type Range Register) cleanup + + Copyright (C) 2009 Yinghai Lu + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/smp.h> +#include <linux/cpu.h> +#include <linux/mutex.h> +#include <linux/sort.h> + +#include <asm/e820.h> +#include <asm/mtrr.h> +#include <asm/uaccess.h> +#include <asm/processor.h> +#include <asm/msr.h> +#include <asm/kvm_para.h> +#include "mtrr.h" + +/* should be related to MTRR_VAR_RANGES nums */ +#define RANGE_NUM 256 + +struct res_range { + unsigned long start; + unsigned long end; +}; + +static int __init +add_range(struct res_range *range, int nr_range, unsigned long start, + unsigned long end) +{ + /* out of slots */ + if (nr_range >= RANGE_NUM) + return nr_range; + + range[nr_range].start = start; + range[nr_range].end = end; + + nr_range++; + + return nr_range; +} + +static int __init +add_range_with_merge(struct res_range *range, int nr_range, unsigned long start, + unsigned long end) +{ + int i; + + /* try to merge it with old one */ + for (i = 0; i < nr_range; i++) { + unsigned long final_start, final_end; + unsigned long common_start, common_end; + + if (!range[i].end) + continue; + + common_start = max(range[i].start, start); + common_end = min(range[i].end, end); + if (common_start > common_end + 1) + continue; + + final_start = min(range[i].start, start); + final_end = max(range[i].end, end); + + range[i].start = final_start; + range[i].end = final_end; + return nr_range; + } + + /* need to add that */ + return add_range(range, nr_range, start, end); +} + +static void __init +subtract_range(struct res_range *range, unsigned long start, unsigned long end) +{ + int i, j; + + for (j = 0; j < RANGE_NUM; j++) { + if (!range[j].end) + continue; + + if (start <= range[j].start && end >= range[j].end) { + range[j].start = 0; + range[j].end = 0; + continue; + } + + if (start <= range[j].start && end < range[j].end && + range[j].start < end + 1) { + range[j].start = end + 1; + continue; + } + + + if (start > range[j].start && end >= range[j].end && + range[j].end > start - 1) { + range[j].end = start - 1; + continue; + } + + if (start > range[j].start && end < range[j].end) { + /* find the new spare */ + for (i = 0; i < RANGE_NUM; i++) { + if (range[i].end == 0) + break; + } + if (i < RANGE_NUM) { + range[i].end = range[j].end; + range[i].start = end + 1; + } else { + printk(KERN_ERR "run of slot in ranges\n"); + } + range[j].end = start - 1; + continue; + } + } +} + +static int __init cmp_range(const void *x1, const void *x2) +{ + const struct res_range *r1 = x1; + const struct res_range *r2 = x2; + long start1, start2; + + start1 = r1->start; + start2 = r2->start; + + return start1 - start2; +} + +struct var_mtrr_range_state { + unsigned long base_pfn; + unsigned long size_pfn; + mtrr_type type; +}; + +static struct var_mtrr_range_state __initdata range_state[RANGE_NUM]; +static int __initdata debug_print; + +static int __init +x86_get_mtrr_mem_range(struct res_range *range, int nr_range, + unsigned long extra_remove_base, + unsigned long extra_remove_size) +{ + unsigned long i, base, size; + mtrr_type type; + + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type != MTRR_TYPE_WRBACK) + continue; + base = range_state[i].base_pfn; + size = range_state[i].size_pfn; + nr_range = add_range_with_merge(range, nr_range, base, + base + size - 1); + } + if (debug_print) { + printk(KERN_DEBUG "After WB checking\n"); + for (i = 0; i < nr_range; i++) + printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", + range[i].start, range[i].end + 1); + } + + /* take out UC ranges */ + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type != MTRR_TYPE_UNCACHABLE && + type != MTRR_TYPE_WRPROT) + continue; + size = range_state[i].size_pfn; + if (!size) + continue; + base = range_state[i].base_pfn; + subtract_range(range, base, base + size - 1); + } + if (extra_remove_size) + subtract_range(range, extra_remove_base, + extra_remove_base + extra_remove_size - 1); + + /* get new range num */ + nr_range = 0; + for (i = 0; i < RANGE_NUM; i++) { + if (!range[i].end) + continue; + nr_range++; + } + if (debug_print) { + printk(KERN_DEBUG "After UC checking\n"); + for (i = 0; i < nr_range; i++) + printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", + range[i].start, range[i].end + 1); + } + + /* sort the ranges */ + sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); + if (debug_print) { + printk(KERN_DEBUG "After sorting\n"); + for (i = 0; i < nr_range; i++) + printk(KERN_DEBUG "MTRR MAP PFN: %016lx - %016lx\n", + range[i].start, range[i].end + 1); + } + + /* clear those is not used */ + for (i = nr_range; i < RANGE_NUM; i++) + memset(&range[i], 0, sizeof(range[i])); + + return nr_range; +} + +static struct res_range __initdata range[RANGE_NUM]; +static int __initdata nr_range; + +#ifdef CONFIG_MTRR_SANITIZER + +static unsigned long __init sum_ranges(struct res_range *range, int nr_range) +{ + unsigned long sum; + int i; + + sum = 0; + for (i = 0; i < nr_range; i++) + sum += range[i].end + 1 - range[i].start; + + return sum; +} + +static int enable_mtrr_cleanup __initdata = + CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT; + +static int __init disable_mtrr_cleanup_setup(char *str) +{ + enable_mtrr_cleanup = 0; + return 0; +} +early_param("disable_mtrr_cleanup", disable_mtrr_cleanup_setup); + +static int __init enable_mtrr_cleanup_setup(char *str) +{ + enable_mtrr_cleanup = 1; + return 0; +} +early_param("enable_mtrr_cleanup", enable_mtrr_cleanup_setup); + +static int __init mtrr_cleanup_debug_setup(char *str) +{ + debug_print = 1; + return 0; +} +early_param("mtrr_cleanup_debug", mtrr_cleanup_debug_setup); + +struct var_mtrr_state { + unsigned long range_startk; + unsigned long range_sizek; + unsigned long chunk_sizek; + unsigned long gran_sizek; + unsigned int reg; +}; + +static void __init +set_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, + unsigned char type, unsigned int address_bits) +{ + u32 base_lo, base_hi, mask_lo, mask_hi; + u64 base, mask; + + if (!sizek) { + fill_mtrr_var_range(reg, 0, 0, 0, 0); + return; + } + + mask = (1ULL << address_bits) - 1; + mask &= ~((((u64)sizek) << 10) - 1); + + base = ((u64)basek) << 10; + + base |= type; + mask |= 0x800; + + base_lo = base & ((1ULL<<32) - 1); + base_hi = base >> 32; + + mask_lo = mask & ((1ULL<<32) - 1); + mask_hi = mask >> 32; + + fill_mtrr_var_range(reg, base_lo, base_hi, mask_lo, mask_hi); +} + +static void __init +save_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek, + unsigned char type) +{ + range_state[reg].base_pfn = basek >> (PAGE_SHIFT - 10); + range_state[reg].size_pfn = sizek >> (PAGE_SHIFT - 10); + range_state[reg].type = type; +} + +static void __init +set_var_mtrr_all(unsigned int address_bits) +{ + unsigned long basek, sizek; + unsigned char type; + unsigned int reg; + + for (reg = 0; reg < num_var_ranges; reg++) { + basek = range_state[reg].base_pfn << (PAGE_SHIFT - 10); + sizek = range_state[reg].size_pfn << (PAGE_SHIFT - 10); + type = range_state[reg].type; + + set_var_mtrr(reg, basek, sizek, type, address_bits); + } +} + +static unsigned long to_size_factor(unsigned long sizek, char *factorp) +{ + char factor; + unsigned long base = sizek; + + if (base & ((1<<10) - 1)) { + /* not MB alignment */ + factor = 'K'; + } else if (base & ((1<<20) - 1)) { + factor = 'M'; + base >>= 10; + } else { + factor = 'G'; + base >>= 20; + } + + *factorp = factor; + + return base; +} + +static unsigned int __init +range_to_mtrr(unsigned int reg, unsigned long range_startk, + unsigned long range_sizek, unsigned char type) +{ + if (!range_sizek || (reg >= num_var_ranges)) + return reg; + + while (range_sizek) { + unsigned long max_align, align; + unsigned long sizek; + + /* Compute the maximum size I can make a range */ + if (range_startk) + max_align = ffs(range_startk) - 1; + else + max_align = 32; + align = fls(range_sizek) - 1; + if (align > max_align) + align = max_align; + + sizek = 1 << align; + if (debug_print) { + char start_factor = 'K', size_factor = 'K'; + unsigned long start_base, size_base; + + start_base = to_size_factor(range_startk, + &start_factor), + size_base = to_size_factor(sizek, &size_factor), + + printk(KERN_DEBUG "Setting variable MTRR %d, " + "base: %ld%cB, range: %ld%cB, type %s\n", + reg, start_base, start_factor, + size_base, size_factor, + (type == MTRR_TYPE_UNCACHABLE) ? "UC" : + ((type == MTRR_TYPE_WRBACK) ? "WB" : "Other") + ); + } + save_var_mtrr(reg++, range_startk, sizek, type); + range_startk += sizek; + range_sizek -= sizek; + if (reg >= num_var_ranges) + break; + } + return reg; +} + +static unsigned __init +range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek, + unsigned long sizek) +{ + unsigned long hole_basek, hole_sizek; + unsigned long second_basek, second_sizek; + unsigned long range0_basek, range0_sizek; + unsigned long range_basek, range_sizek; + unsigned long chunk_sizek; + unsigned long gran_sizek; + + hole_basek = 0; + hole_sizek = 0; + second_basek = 0; + second_sizek = 0; + chunk_sizek = state->chunk_sizek; + gran_sizek = state->gran_sizek; + + /* align with gran size, prevent small block used up MTRRs */ + range_basek = ALIGN(state->range_startk, gran_sizek); + if ((range_basek > basek) && basek) + return second_sizek; + state->range_sizek -= (range_basek - state->range_startk); + range_sizek = ALIGN(state->range_sizek, gran_sizek); + + while (range_sizek > state->range_sizek) { + range_sizek -= gran_sizek; + if (!range_sizek) + return 0; + } + state->range_sizek = range_sizek; + + /* try to append some small hole */ + range0_basek = state->range_startk; + range0_sizek = ALIGN(state->range_sizek, chunk_sizek); + + /* no increase */ + if (range0_sizek == state->range_sizek) { + if (debug_print) + printk(KERN_DEBUG "rangeX: %016lx - %016lx\n", + range0_basek<<10, + (range0_basek + state->range_sizek)<<10); + state->reg = range_to_mtrr(state->reg, range0_basek, + state->range_sizek, MTRR_TYPE_WRBACK); + return 0; + } + + /* only cut back, when it is not the last */ + if (sizek) { + while (range0_basek + range0_sizek > (basek + sizek)) { + if (range0_sizek >= chunk_sizek) + range0_sizek -= chunk_sizek; + else + range0_sizek = 0; + + if (!range0_sizek) + break; + } + } + +second_try: + range_basek = range0_basek + range0_sizek; + + /* one hole in the middle */ + if (range_basek > basek && range_basek <= (basek + sizek)) + second_sizek = range_basek - basek; + + if (range0_sizek > state->range_sizek) { + + /* one hole in middle or at end */ + hole_sizek = range0_sizek - state->range_sizek - second_sizek; + + /* hole size should be less than half of range0 size */ + if (hole_sizek >= (range0_sizek >> 1) && + range0_sizek >= chunk_sizek) { + range0_sizek -= chunk_sizek; + second_sizek = 0; + hole_sizek = 0; + + goto second_try; + } + } + + if (range0_sizek) { + if (debug_print) + printk(KERN_DEBUG "range0: %016lx - %016lx\n", + range0_basek<<10, + (range0_basek + range0_sizek)<<10); + state->reg = range_to_mtrr(state->reg, range0_basek, + range0_sizek, MTRR_TYPE_WRBACK); + } + + if (range0_sizek < state->range_sizek) { + /* need to handle left over */ + range_sizek = state->range_sizek - range0_sizek; + + if (debug_print) + printk(KERN_DEBUG "range: %016lx - %016lx\n", + range_basek<<10, + (range_basek + range_sizek)<<10); + state->reg = range_to_mtrr(state->reg, range_basek, + range_sizek, MTRR_TYPE_WRBACK); + } + + if (hole_sizek) { + hole_basek = range_basek - hole_sizek - second_sizek; + if (debug_print) + printk(KERN_DEBUG "hole: %016lx - %016lx\n", + hole_basek<<10, + (hole_basek + hole_sizek)<<10); + state->reg = range_to_mtrr(state->reg, hole_basek, + hole_sizek, MTRR_TYPE_UNCACHABLE); + } + + return second_sizek; +} + +static void __init +set_var_mtrr_range(struct var_mtrr_state *state, unsigned long base_pfn, + unsigned long size_pfn) +{ + unsigned long basek, sizek; + unsigned long second_sizek = 0; + + if (state->reg >= num_var_ranges) + return; + + basek = base_pfn << (PAGE_SHIFT - 10); + sizek = size_pfn << (PAGE_SHIFT - 10); + + /* See if I can merge with the last range */ + if ((basek <= 1024) || + (state->range_startk + state->range_sizek == basek)) { + unsigned long endk = basek + sizek; + state->range_sizek = endk - state->range_startk; + return; + } + /* Write the range mtrrs */ + if (state->range_sizek != 0) + second_sizek = range_to_mtrr_with_hole(state, basek, sizek); + + /* Allocate an msr */ + state->range_startk = basek + second_sizek; + state->range_sizek = sizek - second_sizek; +} + +/* mininum size of mtrr block that can take hole */ +static u64 mtrr_chunk_size __initdata = (256ULL<<20); + +static int __init parse_mtrr_chunk_size_opt(char *p) +{ + if (!p) + return -EINVAL; + mtrr_chunk_size = memparse(p, &p); + return 0; +} +early_param("mtrr_chunk_size", parse_mtrr_chunk_size_opt); + +/* granity of mtrr of block */ +static u64 mtrr_gran_size __initdata; + +static int __init parse_mtrr_gran_size_opt(char *p) +{ + if (!p) + return -EINVAL; + mtrr_gran_size = memparse(p, &p); + return 0; +} +early_param("mtrr_gran_size", parse_mtrr_gran_size_opt); + +static int nr_mtrr_spare_reg __initdata = + CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT; + +static int __init parse_mtrr_spare_reg(char *arg) +{ + if (arg) + nr_mtrr_spare_reg = simple_strtoul(arg, NULL, 0); + return 0; +} + +early_param("mtrr_spare_reg_nr", parse_mtrr_spare_reg); + +static int __init +x86_setup_var_mtrrs(struct res_range *range, int nr_range, + u64 chunk_size, u64 gran_size) +{ + struct var_mtrr_state var_state; + int i; + int num_reg; + + var_state.range_startk = 0; + var_state.range_sizek = 0; + var_state.reg = 0; + var_state.chunk_sizek = chunk_size >> 10; + var_state.gran_sizek = gran_size >> 10; + + memset(range_state, 0, sizeof(range_state)); + + /* Write the range etc */ + for (i = 0; i < nr_range; i++) + set_var_mtrr_range(&var_state, range[i].start, + range[i].end - range[i].start + 1); + + /* Write the last range */ + if (var_state.range_sizek != 0) + range_to_mtrr_with_hole(&var_state, 0, 0); + + num_reg = var_state.reg; + /* Clear out the extra MTRR's */ + while (var_state.reg < num_var_ranges) { + save_var_mtrr(var_state.reg, 0, 0, 0); + var_state.reg++; + } + + return num_reg; +} + +struct mtrr_cleanup_result { + unsigned long gran_sizek; + unsigned long chunk_sizek; + unsigned long lose_cover_sizek; + unsigned int num_reg; + int bad; +}; + +/* + * gran_size: 64K, 128K, 256K, 512K, 1M, 2M, ..., 2G + * chunk size: gran_size, ..., 2G + * so we need (1+16)*8 + */ +#define NUM_RESULT 136 +#define PSHIFT (PAGE_SHIFT - 10) + +static struct mtrr_cleanup_result __initdata result[NUM_RESULT]; +static unsigned long __initdata min_loss_pfn[RANGE_NUM]; + +static void __init print_out_mtrr_range_state(void) +{ + int i; + char start_factor = 'K', size_factor = 'K'; + unsigned long start_base, size_base; + mtrr_type type; + + for (i = 0; i < num_var_ranges; i++) { + + size_base = range_state[i].size_pfn << (PAGE_SHIFT - 10); + if (!size_base) + continue; + + size_base = to_size_factor(size_base, &size_factor), + start_base = range_state[i].base_pfn << (PAGE_SHIFT - 10); + start_base = to_size_factor(start_base, &start_factor), + type = range_state[i].type; + + printk(KERN_DEBUG "reg %d, base: %ld%cB, range: %ld%cB, type %s\n", + i, start_base, start_factor, + size_base, size_factor, + (type == MTRR_TYPE_UNCACHABLE) ? "UC" : + ((type == MTRR_TYPE_WRPROT) ? "WP" : + ((type == MTRR_TYPE_WRBACK) ? "WB" : "Other")) + ); + } +} + +static int __init mtrr_need_cleanup(void) +{ + int i; + mtrr_type type; + unsigned long size; + /* extra one for all 0 */ + int num[MTRR_NUM_TYPES + 1]; + + /* check entries number */ + memset(num, 0, sizeof(num)); + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + size = range_state[i].size_pfn; + if (type >= MTRR_NUM_TYPES) + continue; + if (!size) + type = MTRR_NUM_TYPES; + if (type == MTRR_TYPE_WRPROT) + type = MTRR_TYPE_UNCACHABLE; + num[type]++; + } + + /* check if we got UC entries */ + if (!num[MTRR_TYPE_UNCACHABLE]) + return 0; + + /* check if we only had WB and UC */ + if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != + num_var_ranges - num[MTRR_NUM_TYPES]) + return 0; + + return 1; +} + +static unsigned long __initdata range_sums; +static void __init mtrr_calc_range_state(u64 chunk_size, u64 gran_size, + unsigned long extra_remove_base, + unsigned long extra_remove_size, + int i) +{ + int num_reg; + static struct res_range range_new[RANGE_NUM]; + static int nr_range_new; + unsigned long range_sums_new; + + /* convert ranges to var ranges state */ + num_reg = x86_setup_var_mtrrs(range, nr_range, + chunk_size, gran_size); + + /* we got new setting in range_state, check it */ + memset(range_new, 0, sizeof(range_new)); + nr_range_new = x86_get_mtrr_mem_range(range_new, 0, + extra_remove_base, extra_remove_size); + range_sums_new = sum_ranges(range_new, nr_range_new); + + result[i].chunk_sizek = chunk_size >> 10; + result[i].gran_sizek = gran_size >> 10; + result[i].num_reg = num_reg; + if (range_sums < range_sums_new) { + result[i].lose_cover_sizek = + (range_sums_new - range_sums) << PSHIFT; + result[i].bad = 1; + } else + result[i].lose_cover_sizek = + (range_sums - range_sums_new) << PSHIFT; + + /* double check it */ + if (!result[i].bad && !result[i].lose_cover_sizek) { + if (nr_range_new != nr_range || + memcmp(range, range_new, sizeof(range))) + result[i].bad = 1; + } + + if (!result[i].bad && (range_sums - range_sums_new < + min_loss_pfn[num_reg])) { + min_loss_pfn[num_reg] = + range_sums - range_sums_new; + } +} + +static void __init mtrr_print_out_one_result(int i) +{ + char gran_factor, chunk_factor, lose_factor; + unsigned long gran_base, chunk_base, lose_base; + + gran_base = to_size_factor(result[i].gran_sizek, &gran_factor), + chunk_base = to_size_factor(result[i].chunk_sizek, &chunk_factor), + lose_base = to_size_factor(result[i].lose_cover_sizek, &lose_factor), + printk(KERN_INFO "%sgran_size: %ld%c \tchunk_size: %ld%c \t", + result[i].bad ? "*BAD*" : " ", + gran_base, gran_factor, chunk_base, chunk_factor); + printk(KERN_CONT "num_reg: %d \tlose cover RAM: %s%ld%c\n", + result[i].num_reg, result[i].bad ? "-" : "", + lose_base, lose_factor); +} + +static int __init mtrr_search_optimal_index(void) +{ + int i; + int num_reg_good; + int index_good; + + if (nr_mtrr_spare_reg >= num_var_ranges) + nr_mtrr_spare_reg = num_var_ranges - 1; + num_reg_good = -1; + for (i = num_var_ranges - nr_mtrr_spare_reg; i > 0; i--) { + if (!min_loss_pfn[i]) + num_reg_good = i; + } + + index_good = -1; + if (num_reg_good != -1) { + for (i = 0; i < NUM_RESULT; i++) { + if (!result[i].bad && + result[i].num_reg == num_reg_good && + !result[i].lose_cover_sizek) { + index_good = i; + break; + } + } + } + + return index_good; +} + + +int __init mtrr_cleanup(unsigned address_bits) +{ + unsigned long extra_remove_base, extra_remove_size; + unsigned long base, size, def, dummy; + mtrr_type type; + u64 chunk_size, gran_size; + int index_good; + int i; + + if (!is_cpu(INTEL) || enable_mtrr_cleanup < 1) + return 0; + rdmsr(MTRRdefType_MSR, def, dummy); + def &= 0xff; + if (def != MTRR_TYPE_UNCACHABLE) + return 0; + + /* get it and store it aside */ + memset(range_state, 0, sizeof(range_state)); + for (i = 0; i < num_var_ranges; i++) { + mtrr_if->get(i, &base, &size, &type); + range_state[i].base_pfn = base; + range_state[i].size_pfn = size; + range_state[i].type = type; + } + + /* check if we need handle it and can handle it */ + if (!mtrr_need_cleanup()) + return 0; + + /* print original var MTRRs at first, for debugging: */ + printk(KERN_DEBUG "original variable MTRRs\n"); + print_out_mtrr_range_state(); + + memset(range, 0, sizeof(range)); + extra_remove_size = 0; + extra_remove_base = 1 << (32 - PAGE_SHIFT); + if (mtrr_tom2) + extra_remove_size = + (mtrr_tom2 >> PAGE_SHIFT) - extra_remove_base; + nr_range = x86_get_mtrr_mem_range(range, 0, extra_remove_base, + extra_remove_size); + /* + * [0, 1M) should always be coverred by var mtrr with WB + * and fixed mtrrs should take effective before var mtrr for it + */ + nr_range = add_range_with_merge(range, nr_range, 0, + (1ULL<<(20 - PAGE_SHIFT)) - 1); + /* sort the ranges */ + sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); + + range_sums = sum_ranges(range, nr_range); + printk(KERN_INFO "total RAM coverred: %ldM\n", + range_sums >> (20 - PAGE_SHIFT)); + + if (mtrr_chunk_size && mtrr_gran_size) { + i = 0; + mtrr_calc_range_state(mtrr_chunk_size, mtrr_gran_size, + extra_remove_base, extra_remove_size, i); + + mtrr_print_out_one_result(i); + + if (!result[i].bad) { + set_var_mtrr_all(address_bits); + printk(KERN_DEBUG "New variable MTRRs\n"); + print_out_mtrr_range_state(); + return 1; + } + printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, " + "will find optimal one\n"); + } + + i = 0; + memset(min_loss_pfn, 0xff, sizeof(min_loss_pfn)); + memset(result, 0, sizeof(result)); + for (gran_size = (1ULL<<16); gran_size < (1ULL<<32); gran_size <<= 1) { + + for (chunk_size = gran_size; chunk_size < (1ULL<<32); + chunk_size <<= 1) { + + if (i >= NUM_RESULT) + continue; + + mtrr_calc_range_state(chunk_size, gran_size, + extra_remove_base, extra_remove_size, i); + if (debug_print) { + mtrr_print_out_one_result(i); + printk(KERN_INFO "\n"); + } + + i++; + } + } + + /* try to find the optimal index */ + index_good = mtrr_search_optimal_index(); + + if (index_good != -1) { + printk(KERN_INFO "Found optimal setting for mtrr clean up\n"); + i = index_good; + mtrr_print_out_one_result(i); + + /* convert ranges to var ranges state */ + chunk_size = result[i].chunk_sizek; + chunk_size <<= 10; + gran_size = result[i].gran_sizek; + gran_size <<= 10; + x86_setup_var_mtrrs(range, nr_range, chunk_size, gran_size); + set_var_mtrr_all(address_bits); + printk(KERN_DEBUG "New variable MTRRs\n"); + print_out_mtrr_range_state(); + return 1; + } else { + /* print out all */ + for (i = 0; i < NUM_RESULT; i++) + mtrr_print_out_one_result(i); + } + + printk(KERN_INFO "mtrr_cleanup: can not find optimal value\n"); + printk(KERN_INFO "please specify mtrr_gran_size/mtrr_chunk_size\n"); + + return 0; +} +#else +int __init mtrr_cleanup(unsigned address_bits) +{ + return 0; +} +#endif + +static int disable_mtrr_trim; + +static int __init disable_mtrr_trim_setup(char *str) +{ + disable_mtrr_trim = 1; + return 0; +} +early_param("disable_mtrr_trim", disable_mtrr_trim_setup); + +/* + * Newer AMD K8s and later CPUs have a special magic MSR way to force WB + * for memory >4GB. Check for that here. + * Note this won't check if the MTRRs < 4GB where the magic bit doesn't + * apply to are wrong, but so far we don't know of any such case in the wild. + */ +#define Tom2Enabled (1U << 21) +#define Tom2ForceMemTypeWB (1U << 22) + +int __init amd_special_default_mtrr(void) +{ + u32 l, h; + + if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) + return 0; + if (boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x11) + return 0; + /* In case some hypervisor doesn't pass SYSCFG through */ + if (rdmsr_safe(MSR_K8_SYSCFG, &l, &h) < 0) + return 0; + /* + * Memory between 4GB and top of mem is forced WB by this magic bit. + * Reserved before K8RevF, but should be zero there. + */ + if ((l & (Tom2Enabled | Tom2ForceMemTypeWB)) == + (Tom2Enabled | Tom2ForceMemTypeWB)) + return 1; + return 0; +} + +static u64 __init real_trim_memory(unsigned long start_pfn, + unsigned long limit_pfn) +{ + u64 trim_start, trim_size; + trim_start = start_pfn; + trim_start <<= PAGE_SHIFT; + trim_size = limit_pfn; + trim_size <<= PAGE_SHIFT; + trim_size -= trim_start; + + return e820_update_range(trim_start, trim_size, E820_RAM, + E820_RESERVED); +} +/** + * mtrr_trim_uncached_memory - trim RAM not covered by MTRRs + * @end_pfn: ending page frame number + * + * Some buggy BIOSes don't setup the MTRRs properly for systems with certain + * memory configurations. This routine checks that the highest MTRR matches + * the end of memory, to make sure the MTRRs having a write back type cover + * all of the memory the kernel is intending to use. If not, it'll trim any + * memory off the end by adjusting end_pfn, removing it from the kernel's + * allocation pools, warning the user with an obnoxious message. + */ +int __init mtrr_trim_uncached_memory(unsigned long end_pfn) +{ + unsigned long i, base, size, highest_pfn = 0, def, dummy; + mtrr_type type; + u64 total_trim_size; + + /* extra one for all 0 */ + int num[MTRR_NUM_TYPES + 1]; + /* + * Make sure we only trim uncachable memory on machines that + * support the Intel MTRR architecture: + */ + if (!is_cpu(INTEL) || disable_mtrr_trim) + return 0; + rdmsr(MTRRdefType_MSR, def, dummy); + def &= 0xff; + if (def != MTRR_TYPE_UNCACHABLE) + return 0; + + /* get it and store it aside */ + memset(range_state, 0, sizeof(range_state)); + for (i = 0; i < num_var_ranges; i++) { + mtrr_if->get(i, &base, &size, &type); + range_state[i].base_pfn = base; + range_state[i].size_pfn = size; + range_state[i].type = type; + } + + /* Find highest cached pfn */ + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type != MTRR_TYPE_WRBACK) + continue; + base = range_state[i].base_pfn; + size = range_state[i].size_pfn; + if (highest_pfn < base + size) + highest_pfn = base + size; + } + + /* kvm/qemu doesn't have mtrr set right, don't trim them all */ + if (!highest_pfn) { + printk(KERN_INFO "CPU MTRRs all blank - virtualized system.\n"); + return 0; + } + + /* check entries number */ + memset(num, 0, sizeof(num)); + for (i = 0; i < num_var_ranges; i++) { + type = range_state[i].type; + if (type >= MTRR_NUM_TYPES) + continue; + size = range_state[i].size_pfn; + if (!size) + type = MTRR_NUM_TYPES; + num[type]++; + } + + /* no entry for WB? */ + if (!num[MTRR_TYPE_WRBACK]) + return 0; + + /* check if we only had WB and UC */ + if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] != + num_var_ranges - num[MTRR_NUM_TYPES]) + return 0; + + memset(range, 0, sizeof(range)); + nr_range = 0; + if (mtrr_tom2) { + range[nr_range].start = (1ULL<<(32 - PAGE_SHIFT)); + range[nr_range].end = (mtrr_tom2 >> PAGE_SHIFT) - 1; + if (highest_pfn < range[nr_range].end + 1) + highest_pfn = range[nr_range].end + 1; + nr_range++; + } + nr_range = x86_get_mtrr_mem_range(range, nr_range, 0, 0); + + total_trim_size = 0; + /* check the head */ + if (range[0].start) + total_trim_size += real_trim_memory(0, range[0].start); + /* check the holes */ + for (i = 0; i < nr_range - 1; i++) { + if (range[i].end + 1 < range[i+1].start) + total_trim_size += real_trim_memory(range[i].end + 1, + range[i+1].start); + } + /* check the top */ + i = nr_range - 1; + if (range[i].end + 1 < end_pfn) + total_trim_size += real_trim_memory(range[i].end + 1, + end_pfn); + + if (total_trim_size) { + printk(KERN_WARNING "WARNING: BIOS bug: CPU MTRRs don't cover" + " all of memory, losing %lluMB of RAM.\n", + total_trim_size >> 20); + + if (!changed_by_mtrr_cleanup) + WARN_ON(1); + + printk(KERN_INFO "update e820 for mtrr\n"); + update_e820(); + + return 1; + } + + return 0; +} + ^ permalink raw reply [flat|nested] 19+ messages in thread
end of thread, other threads:[~2009-03-14 11:41 UTC | newest] Thread overview: 19+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2009-03-12 3:05 [PATCH] x86: more debug print out with mtrr Yinghai Lu 2009-03-12 3:05 ` [PATCH] x86: print out mtrr_range_state when user specify size Yinghai Lu 2009-03-12 3:07 ` [PATCH] x86: seperate mtrr cleanup/mtrr_e820 trim to seperated file Yinghai Lu 2009-03-13 2:34 ` [tip:x86/mtrr] x86: separate mtrr cleanup/mtrr_e820 trim to separate file Yinghai Lu 2009-03-13 2:34 ` [tip:x86/mtrr] x86: print out mtrr_range_state when user specify size Yinghai Lu 2009-03-13 1:40 ` [PATCH] x86: more debug print out with mtrr Ingo Molnar 2009-03-13 1:43 ` Yinghai Lu 2009-03-13 2:34 ` [tip:x86/mtrr] x86: more MTRR debug printouts Yinghai Lu 2009-03-13 4:26 ` Jaswinder Singh Rajput 2009-03-13 15:33 ` Jaswinder Singh Rajput 2009-03-13 15:45 ` Jaswinder Singh Rajput 2009-03-13 19:46 ` Yinghai Lu 2009-03-14 7:15 ` Jaswinder Singh Rajput 2009-03-14 7:21 ` Yinghai Lu 2009-03-14 11:18 ` Ingo Molnar 2009-03-14 11:30 ` Ingo Molnar 2009-03-14 11:39 ` [tip:x86/mtrr] x86: fix get_mtrr() warning about smp_processor_id() with CONFIG_PREEMPT=y Yinghai Lu 2009-03-13 1:44 ` [PATCH] x86: print out mtrr_range_state when user specify size Yinghai Lu 2009-03-13 1:45 ` [PATCH] x86: seperate mtrr cleanup/mtrr_e820 trim to seperated file Yinghai Lu
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