From: Yinghai Lu <yinghai@kernel.org>
To: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
David Miller <davem@davemloft.net>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH 19/33] x86: Add sanitize_e820_map()
Date: Tue, 30 Mar 2010 19:17:04 -0700 [thread overview]
Message-ID: <1270001838-15857-20-git-send-email-yinghai@kernel.org> (raw)
In-Reply-To: <1270001838-15857-1-git-send-email-yinghai@kernel.org>
So We don't need to take e820.map with it.
Also change e820_saved to initdata to get some bytes memory back.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
arch/x86/include/asm/e820.h | 5 ++---
arch/x86/kernel/e820.c | 26 ++++++++++++++++++--------
arch/x86/kernel/efi.c | 2 +-
arch/x86/kernel/setup.c | 10 +++++-----
arch/x86/xen/setup.c | 4 +---
5 files changed, 27 insertions(+), 20 deletions(-)
diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index ec8a52d..0457c49 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -75,15 +75,14 @@ struct e820map {
#ifdef __KERNEL__
/* see comment in arch/x86/kernel/e820.c */
extern struct e820map e820;
-extern struct e820map e820_saved;
extern unsigned long pci_mem_start;
extern int e820_any_mapped(u64 start, u64 end, unsigned type);
extern int e820_all_mapped(u64 start, u64 end, unsigned type);
extern void e820_add_region(u64 start, u64 size, int type);
extern void e820_print_map(char *who);
-extern int
-sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, u32 *pnr_map);
+int sanitize_e820_map(void);
+void save_e820_map(void);
extern u64 e820_update_range(u64 start, u64 size, unsigned old_type,
unsigned new_type);
extern u64 e820_remove_range(u64 start, u64 size, unsigned old_type,
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 7bca3c6..14d0a1a 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -35,7 +35,7 @@
* next kernel with full memory.
*/
struct e820map e820;
-struct e820map e820_saved;
+static struct e820map __initdata e820_saved;
/* For PCI or other memory-mapped resources */
unsigned long pci_mem_start = 0xaeedbabe;
@@ -224,7 +224,7 @@ void __init e820_print_map(char *who)
* ______________________4_
*/
-int __init sanitize_e820_map(struct e820entry *biosmap, int max_nr_map,
+static int __init __sanitize_e820_map(struct e820entry *biosmap, int max_nr_map,
u32 *pnr_map)
{
struct change_member {
@@ -383,6 +383,11 @@ int __init sanitize_e820_map(struct e820entry *biosmap, int max_nr_map,
return 0;
}
+int __init sanitize_e820_map(void)
+{
+ return __sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+}
+
static int __init __append_e820_map(struct e820entry *biosmap, int nr_map)
{
while (nr_map) {
@@ -571,7 +576,7 @@ void __init update_e820(void)
u32 nr_map;
nr_map = e820.nr_map;
- if (sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &nr_map))
+ if (__sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &nr_map))
return;
e820.nr_map = nr_map;
printk(KERN_INFO "modified physical RAM map:\n");
@@ -582,7 +587,7 @@ static void __init update_e820_saved(void)
u32 nr_map;
nr_map = e820_saved.nr_map;
- if (sanitize_e820_map(e820_saved.map, ARRAY_SIZE(e820_saved.map), &nr_map))
+ if (__sanitize_e820_map(e820_saved.map, ARRAY_SIZE(e820_saved.map), &nr_map))
return;
e820_saved.nr_map = nr_map;
}
@@ -677,7 +682,7 @@ void __init parse_e820_ext(struct setup_data *sdata, unsigned long pa_data)
sdata = early_ioremap(pa_data, map_len);
extmap = (struct e820entry *)(sdata->data);
__append_e820_map(extmap, entries);
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map();
if (map_len > PAGE_SIZE)
early_iounmap(sdata, map_len);
printk(KERN_INFO "extended physical RAM map:\n");
@@ -1044,7 +1049,7 @@ void __init finish_e820_parsing(void)
if (userdef) {
u32 nr = e820.nr_map;
- if (sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &nr) < 0)
+ if (__sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &nr) < 0)
early_panic("Invalid user supplied memory map");
e820.nr_map = nr;
@@ -1174,7 +1179,7 @@ char *__init default_machine_specific_memory_setup(void)
* the next section from 1mb->appropriate_mem_k
*/
new_nr = boot_params.e820_entries;
- sanitize_e820_map(boot_params.e820_map,
+ __sanitize_e820_map(boot_params.e820_map,
ARRAY_SIZE(boot_params.e820_map),
&new_nr);
boot_params.e820_entries = new_nr;
@@ -1201,12 +1206,17 @@ char *__init default_machine_specific_memory_setup(void)
return who;
}
+void __init save_e820_map(void)
+{
+ memcpy(&e820_saved, &e820, sizeof(struct e820map));
+}
+
void __init setup_memory_map(void)
{
char *who;
who = x86_init.resources.memory_setup();
- memcpy(&e820_saved, &e820, sizeof(struct e820map));
+ save_e820_map();
printk(KERN_INFO "BIOS-provided physical RAM map:\n");
e820_print_map(who);
}
diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c
index c2fa9b8..299f03f 100644
--- a/arch/x86/kernel/efi.c
+++ b/arch/x86/kernel/efi.c
@@ -272,7 +272,7 @@ static void __init do_add_efi_memmap(void)
}
e820_add_region(start, size, e820_type);
}
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map();
}
void __init efi_reserve_early(void)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index d76e185..7ca6878 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -463,8 +463,8 @@ static void __init e820_reserve_setup_data(void)
if (!found)
return;
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
- memcpy(&e820_saved, &e820, sizeof(struct e820map));
+ sanitize_e820_map();
+ save_e820_map();
printk(KERN_INFO "extended physical RAM map:\n");
e820_print_map("reserve setup_data");
}
@@ -616,7 +616,7 @@ static int __init dmi_low_memory_corruption(const struct dmi_system_id *d)
d->ident);
e820_update_range(0, 0x10000, E820_RAM, E820_RESERVED);
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map();
return 0;
}
@@ -685,7 +685,7 @@ static void __init trim_bios_range(void)
* take them out.
*/
e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1);
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map();
}
/*
@@ -856,7 +856,7 @@ void __init setup_arch(char **cmdline_p)
if (ppro_with_ram_bug()) {
e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
E820_RESERVED);
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map();
printk(KERN_INFO "fixed physical RAM map:\n");
e820_print_map("bad_ppro");
}
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index ad0047f..3f2c411 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -43,8 +43,6 @@ char * __init xen_memory_setup(void)
max_pfn = min(MAX_DOMAIN_PAGES, max_pfn);
- e820.nr_map = 0;
-
e820_add_region(0, PFN_PHYS((u64)max_pfn), E820_RAM);
/*
@@ -65,7 +63,7 @@ char * __init xen_memory_setup(void)
__pa(xen_start_info->pt_base),
"XEN START INFO");
- sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ sanitize_e820_map();
return "Xen";
}
--
1.6.4.2
next prev parent reply other threads:[~2010-03-31 2:27 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-31 2:16 [PATCH -v11 00/33] use lmb with x86 Yinghai Lu
2010-03-31 2:16 ` [PATCH 01/33] x86: Make e820_remove_range() to handle all covered case Yinghai Lu
2010-03-31 2:16 ` [PATCH 02/33] lmb: Move lmb.c to mm/ Yinghai Lu
2010-03-31 2:16 ` [PATCH 03/33] lmb: Seperate region array from lmb_region struct Yinghai Lu
2010-03-31 2:16 ` [PATCH 04/33] lmb: Seperate __lmb_find_base() from __lmb_alloc_base() Yinghai Lu
2010-03-31 2:16 ` [PATCH 05/33] lmb: Add lmb_find_area() Yinghai Lu
2010-03-31 2:16 ` [PATCH 06/33] lmb: Add lmb_reserve_area/lmb_free_area Yinghai Lu
2010-04-07 23:35 ` Michael Ellerman
2010-04-07 23:36 ` Yinghai
2010-03-31 2:16 ` [PATCH 07/33] bootmem, x86: Add weak version of reserve_bootmem_generic Yinghai Lu
2010-03-31 2:16 ` [PATCH 08/33] lmb: Add lmb_to_bootmem() Yinghai Lu
2010-03-31 2:16 ` [PATCH 09/33] lmb: Add get_free_all_memory_range() Yinghai Lu
2010-03-31 2:16 ` [PATCH 10/33] lmb: Add lmb_register_active_regions() and lmb_hole_size() Yinghai Lu
2010-03-31 2:16 ` [PATCH 11/33] lmb: Prepare to include linux/lmb.h in core file Yinghai Lu
2010-03-31 2:16 ` [PATCH 12/33] lmb: Add find_memory_core_early() Yinghai Lu
2010-03-31 2:16 ` [PATCH 13/33] lmb: Add lmb_find_area_node() Yinghai Lu
2010-03-31 2:16 ` [PATCH 14/33] lmb: Add lmb_free_memory_size() Yinghai Lu
2010-03-31 2:17 ` [PATCH 15/33] lmb: Add lmb_memory_size() Yinghai Lu
2010-03-31 2:17 ` [PATCH 16/33] lmb: Add lmb_reserve_area_overlap_ok() Yinghai Lu
2010-03-31 2:17 ` [PATCH 17/33] lmb: Use lmb_debug to control debug message print out Yinghai Lu
2010-03-31 2:17 ` [PATCH 18/33] lmb: Add ARCH_DISCARD_LMB to put lmb code to .init Yinghai Lu
2010-03-31 2:17 ` Yinghai Lu [this message]
2010-03-31 2:17 ` [PATCH 20/33] x86, lmb: Add lmb_find_area_size() Yinghai Lu
2010-03-31 2:17 ` [PATCH 21/33] x86, lmb: Add x86 version of __lmb_find_area() Yinghai Lu
2010-03-31 2:17 ` [PATCH 22/33] x86: Use lmb to replace early_res Yinghai Lu
2010-03-31 2:17 ` [PATCH 23/33] x86: Replace e820_/_early string with lmb_ Yinghai Lu
2010-03-31 2:17 ` [PATCH 24/33] nobootmem: use lmb.default_alloc_limit in alloc_bootmem path Yinghai Lu
2010-03-31 2:17 ` [PATCH 25/33] x86, lmb: turn off ARCH_LMB_FIND_AREA Yinghai Lu
2010-04-07 23:38 ` Michael Ellerman
2010-04-07 23:40 ` Yinghai
2010-03-31 2:17 ` [PATCH 26/33] x86: Remove not used early_res code Yinghai Lu
2010-03-31 2:17 ` [PATCH 27/33] x86, lmb: Use lmb_memory_size()/lmb_free_memory_size() to get correct dma_reserve Yinghai Lu
2010-03-31 2:17 ` [PATCH 28/33] x86: Align e820 ram range to page Yinghai Lu
2010-03-31 2:17 ` [PATCH 29/33] x86: Use wake_system_ram_range instead of e820_any_mapped in agp path Yinghai Lu
2010-03-31 2:17 ` [PATCH 30/33] x86: Add get_centaur_ram_top() Yinghai Lu
2010-03-31 2:17 ` [PATCH 31/33] x86: Change e820_any_mapped() to __init Yinghai Lu
2010-03-31 2:17 ` [PATCH 32/33] x86: Use walk_system_ream_range() instead of referring e820.map directly for tboot Yinghai Lu
2010-03-31 2:17 ` [PATCH 33/33] x86: make e820 to be __initdata Yinghai Lu
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