Messages in this thread Patch in this message | | | Date | Mon, 08 Mar 2010 01:43:22 -0800 | From | Yinghai Lu <> | Subject | [PATCH 2/4] x86: make e820 to be static |
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make sanitize_e820_map() not take e820.map directly.
and could change e820_saved to initdata
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
--- arch/x86/include/asm/e820.h | 7 ++----- arch/x86/kernel/e820.c | 28 +++++++++++++++++++--------- arch/x86/kernel/efi.c | 2 +- arch/x86/kernel/setup.c | 10 +++++----- arch/x86/xen/setup.c | 4 +--- 5 files changed, 28 insertions(+), 23 deletions(-)
Index: linux-2.6/arch/x86/kernel/e820.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/e820.c +++ linux-2.6/arch/x86/kernel/e820.c @@ -34,8 +34,8 @@ * user can e.g. boot the original kernel with mem=1G while still booting the * next kernel with full memory. */ -struct e820map e820; -struct e820map e820_saved; +static struct e820map e820; +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 e820 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) { @@ -555,7 +560,7 @@ 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"); @@ -566,7 +571,7 @@ static void __init update_e820_saved(voi 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; } @@ -661,7 +666,7 @@ void __init parse_e820_ext(struct setup_ 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"); @@ -1028,7 +1033,7 @@ 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; @@ -1158,7 +1163,7 @@ char *__init default_machine_specific_me * 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; @@ -1185,12 +1190,17 @@ char *__init default_machine_specific_me 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); } Index: linux-2.6/arch/x86/kernel/efi.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/efi.c +++ linux-2.6/arch/x86/kernel/efi.c @@ -272,7 +272,7 @@ static void __init do_add_efi_memmap(voi } 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) Index: linux-2.6/arch/x86/kernel/setup.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/setup.c +++ linux-2.6/arch/x86/kernel/setup.c @@ -461,8 +461,8 @@ static void __init e820_reserve_setup_da 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"); } @@ -614,7 +614,7 @@ static int __init dmi_low_memory_corrupt 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; } @@ -683,7 +683,7 @@ 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(); } /* @@ -854,7 +854,7 @@ 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"); } Index: linux-2.6/arch/x86/xen/setup.c =================================================================== --- linux-2.6.orig/arch/x86/xen/setup.c +++ linux-2.6/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"; } Index: linux-2.6/arch/x86/include/asm/e820.h =================================================================== --- linux-2.6.orig/arch/x86/include/asm/e820.h +++ linux-2.6/arch/x86/include/asm/e820.h @@ -68,9 +68,6 @@ struct e820map { #define BIOS_END 0x00100000 #ifdef __KERNEL__ -/* see comment in arch/x86/kernel/e820.c */ -extern struct e820map e820; -extern struct e820map e820_saved; #ifdef CONFIG_X86_OOSTORE extern int centaur_ram_top; @@ -86,8 +83,8 @@ extern int e820_any_mapped(u64 start, u6 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,
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