[git pull] x86 fixes

Ingo Molnar
2009-03-06T18:36:56Z

Linus,

Please pull the latest x86-fixes-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git x86-fixes-for-linus

Thanks,

Ingo

------------------>
Brian Maly (1):
x86: fix DMI on EFI

Daniel Glöckner (1):
x86, math-emu: fix init_fpu for task != current

Huang Ying (1):
x86: EFI: Back efi_ioremap with init_memory_mapping instead of FIX_MAP

Leann Ogasawara (1):
x86: add Dell XPS710 reboot quirk

Markus Metzger (2):
x86, bts: remove bad warning
x86, pebs: correct qualifier passed to ds_write_config() from ds_request_pebs()

arch/x86/include/asm/efi.h | 2 --
arch/x86/include/asm/fixmap_64.h | 4 ----
arch/x86/include/asm/i387.h | 8 +++++++-
arch/x86/kernel/ds.c | 3 +--
arch/x86/kernel/efi.c | 7 +++++--
arch/x86/kernel/efi_64.c | 21 ++++-----------------
arch/x86/kernel/i387.c | 2 +-
arch/x86/kernel/reboot.c | 8 ++++++++
arch/x86/kernel/setup.c | 5 +++--
arch/x86/math-emu/fpu_aux.c | 31 ++++++++++++++++++++-----------
10 files changed, 49 insertions(+), 42 deletions(-)

diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index ca5ffb2..edc90f2 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -37,8 +37,6 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...);

#else /* !CONFIG_X86_32 */

-#define MAX_EFI_IO_PAGES 100
-
extern u64 efi_call0(void *fp);
extern u64 efi_call1(void *fp, u64 arg1);
extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);
diff --git a/arch/x86/include/asm/fixmap_64.h b/arch/x86/include/asm/fixmap_64.h
index 00a30ab..8be7409 100644
--- a/arch/x86/include/asm/fixmap_64.h
+++ b/arch/x86/include/asm/fixmap_64.h
@@ -16,7 +16,6 @@
#include <asm/apicdef.h>
#include <asm/page.h>
#include <asm/vsyscall.h>
-#include <asm/efi.h>

/*
* Here we define all the compile-time 'special' virtual
@@ -43,9 +42,6 @@ enum fixed_addresses {
FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
FIX_IO_APIC_BASE_0,
FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1,
- FIX_EFI_IO_MAP_LAST_PAGE,
- FIX_EFI_IO_MAP_FIRST_PAGE = FIX_EFI_IO_MAP_LAST_PAGE
- + MAX_EFI_IO_PAGES - 1,
#ifdef CONFIG_PARAVIRT
FIX_PARAVIRT_BOOTMAP,
#endif
diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h
index 48f0004..71c9e51 100644
--- a/arch/x86/include/asm/i387.h
+++ b/arch/x86/include/asm/i387.h
@@ -172,7 +172,13 @@ static inline void __save_init_fpu(struct task_struct *tsk)

#else /* CONFIG_X86_32 */

-extern void finit(void);
+#ifdef CONFIG_MATH_EMULATION
+extern void finit_task(struct task_struct *tsk);
+#else
+static inline void finit_task(struct task_struct *tsk)
+{
+}
+#endif

static inline void tolerant_fwait(void)
{
diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c
index 169a120..87b67e3 100644
--- a/arch/x86/kernel/ds.c
+++ b/arch/x86/kernel/ds.c
@@ -729,7 +729,7 @@ struct pebs_tracer *ds_request_pebs(struct task_struct *task,

spin_unlock_irqrestore(&ds_lock, irq);

- ds_write_config(tracer->ds.context, &tracer->trace.ds, ds_bts);
+ ds_write_config(tracer->ds.context, &tracer->trace.ds, ds_pebs);
ds_resume_pebs(tracer);

return tracer;
@@ -1029,5 +1029,4 @@ void ds_copy_thread(struct task_struct *tsk, struct task_struct *father)

void ds_exit_thread(struct task_struct *tsk)
{
- WARN_ON(tsk->thread.ds_ctx);
}
diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c
index 1119d24..eb1ef3b 100644
--- a/arch/x86/kernel/efi.c
+++ b/arch/x86/kernel/efi.c
@@ -467,7 +467,7 @@ void __init efi_enter_virtual_mode(void)
efi_memory_desc_t *md;
efi_status_t status;
unsigned long size;
- u64 end, systab, addr, npages;
+ u64 end, systab, addr, npages, end_pfn;
void *p, *va;

efi.systab = NULL;
@@ -479,7 +479,10 @@ void __init efi_enter_virtual_mode(void)
size = md->num_pages << EFI_PAGE_SHIFT;
end = md->phys_addr + size;

- if (PFN_UP(end) <= max_low_pfn_mapped)
+ end_pfn = PFN_UP(end);
+ if (end_pfn <= max_low_pfn_mapped
+ || (end_pfn > (1UL << (32 - PAGE_SHIFT))
+ && end_pfn <= max_pfn_mapped))
va = __va(md->phys_addr);
else
va = efi_ioremap(md->phys_addr, size);
diff --git a/arch/x86/kernel/efi_64.c b/arch/x86/kernel/efi_64.c
index 652c528..cb783b9 100644
--- a/arch/x86/kernel/efi_64.c
+++ b/arch/x86/kernel/efi_64.c
@@ -99,24 +99,11 @@ void __init efi_call_phys_epilog(void)

void __iomem *__init efi_ioremap(unsigned long phys_addr, unsigned long size)
{
- static unsigned pages_mapped __initdata;
- unsigned i, pages;
- unsigned long offset;
+ unsigned long last_map_pfn;

- pages = PFN_UP(phys_addr + size) - PFN_DOWN(phys_addr);
- offset = phys_addr & ~PAGE_MASK;
- phys_addr &= PAGE_MASK;
-
- if (pages_mapped + pages > MAX_EFI_IO_PAGES)
+ last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size);
+ if ((last_map_pfn << PAGE_SHIFT) < phys_addr + size)
return NULL;

- for (i = 0; i < pages; i++) {
- __set_fixmap(FIX_EFI_IO_MAP_FIRST_PAGE - pages_mapped,
- phys_addr, PAGE_KERNEL);
- phys_addr += PAGE_SIZE;
- pages_mapped++;
- }
-
- return (void __iomem *)__fix_to_virt(FIX_EFI_IO_MAP_FIRST_PAGE - \
- (pages_mapped - pages)) + offset;
+ return (void __iomem *)__va(phys_addr);
}
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
index b0f61f0..f2f8540 100644
--- a/arch/x86/kernel/i387.c
+++ b/arch/x86/kernel/i387.c
@@ -136,7 +136,7 @@ int init_fpu(struct task_struct *tsk)
#ifdef CONFIG_X86_32
if (!HAVE_HWFP) {
memset(tsk->thread.xstate, 0, xstate_size);
- finit();
+ finit_task(tsk);
set_stopped_child_used_math(tsk);
return 0;
}
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 2b46eb4..4526b3a 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -217,6 +217,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq"),
},
},
+ { /* Handle problems with rebooting on Dell XPS710 */
+ .callback = set_bios_reboot,
+ .ident = "Dell XPS710",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Dell XPS710"),
+ },
+ },
{ }
};

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index c461f6d..6a8811a 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -770,6 +770,9 @@ void __init setup_arch(char **cmdline_p)

finish_e820_parsing();

+ if (efi_enabled)
+ efi_init();
+
dmi_scan_machine();

dmi_check_system(bad_bios_dmi_table);
@@ -789,8 +792,6 @@ void __init setup_arch(char **cmdline_p)
insert_resource(&iomem_resource, &data_resource);
insert_resource(&iomem_resource, &bss_resource);

- if (efi_enabled)
- efi_init();

#ifdef CONFIG_X86_32
if (ppro_with_ram_bug()) {
diff --git a/arch/x86/math-emu/fpu_aux.c b/arch/x86/math-emu/fpu_aux.c
index 491e737..aa09870 100644
--- a/arch/x86/math-emu/fpu_aux.c
+++ b/arch/x86/math-emu/fpu_aux.c
@@ -30,20 +30,29 @@ static void fclex(void)
}

/* Needs to be externally visible */
-void finit(void)
+void finit_task(struct task_struct *tsk)
{
- control_word = 0x037f;
- partial_status = 0;
- top = 0; /* We don't keep top in the status word internally. */
- fpu_tag_word = 0xffff;
+ struct i387_soft_struct *soft = &tsk->thread.xstate->soft;
+ struct address *oaddr, *iaddr;
+ soft->cwd = 0x037f;
+ soft->swd = 0;
+ soft->ftop = 0; /* We don't keep top in the status word internally. */
+ soft->twd = 0xffff;
/* The behaviour is different from that detailed in
Section 15.1.6 of the Intel manual */
- operand_address.offset = 0;
- operand_address.selector = 0;
- instruction_address.offset = 0;
- instruction_address.selector = 0;
- instruction_address.opcode = 0;
- no_ip_update = 1;
+ oaddr = (struct address *)&soft->foo;
+ oaddr->offset = 0;
+ oaddr->selector = 0;
+ iaddr = (struct address *)&soft->fip;
+ iaddr->offset = 0;
+ iaddr->selector = 0;
+ iaddr->opcode = 0;
+ soft->no_update = 1;
+}
+
+void finit(void)
+{
+ finit_task(current);
}

/*