From cc9f7a0ccf000d4db5fbdc7b0ae48eefea102f69 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Mon, 16 Jun 2008 16:11:08 -0700 Subject: [PATCH] x86: kill bad_ppro so don't punish all other cpus without that problem when init highmem Signed-off-by: Yinghai Lu Signed-off-by: Ingo Molnar --- arch/x86/kernel/setup_32.c | 9 +++++++++ arch/x86/mm/discontig_32.c | 4 ++-- arch/x86/mm/init_32.c | 43 ++++++++++++------------------------------- include/asm-x86/highmem.h | 2 +- include/asm-x86/numa_32.h | 2 +- 5 files changed, 25 insertions(+), 35 deletions(-) diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c index f3ddba5ed9a7..9692aeb8ecae 100644 --- a/arch/x86/kernel/setup_32.c +++ b/arch/x86/kernel/setup_32.c @@ -68,6 +68,7 @@ #include #include #include +#include /* This value is set up by the early boot code to point to the value immediately after the boot time page tables. It contains a *physical* @@ -764,6 +765,14 @@ void __init setup_arch(char **cmdline_p) if (efi_enabled) efi_init(); + 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); + printk(KERN_INFO "fixed physical RAM map:\n"); + e820_print_map("bad_ppro"); + } + e820_register_active_regions(0, 0, -1UL); /* * partially used pages are not usable - thus diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c index 7c4d0255f8d8..6216e43b6e95 100644 --- a/arch/x86/mm/discontig_32.c +++ b/arch/x86/mm/discontig_32.c @@ -427,7 +427,7 @@ void __init zone_sizes_init(void) return; } -void __init set_highmem_pages_init(int bad_ppro) +void __init set_highmem_pages_init(void) { #ifdef CONFIG_HIGHMEM struct zone *zone; @@ -447,7 +447,7 @@ void __init set_highmem_pages_init(int bad_ppro) zone->name, nid, zone_start_pfn, zone_end_pfn); add_highpages_with_active_regions(nid, zone_start_pfn, - zone_end_pfn, bad_ppro); + zone_end_pfn); } totalram_pages += totalhigh_pages; #endif diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index ba07a489230e..fb5694d788bf 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -220,13 +220,6 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base) } } -static inline int page_kills_ppro(unsigned long pagenr) -{ - if (pagenr >= 0x70000 && pagenr <= 0x7003F) - return 1; - return 0; -} - /* * devmem_is_allowed() checks to see if /dev/mem access to a certain address * is valid. The argument is a physical page number. @@ -287,22 +280,17 @@ static void __init permanent_kmaps_init(pgd_t *pgd_base) pkmap_page_table = pte; } -static void __init -add_one_highpage_init(struct page *page, int pfn, int bad_ppro) +static void __init add_one_highpage_init(struct page *page, int pfn) { - if (!(bad_ppro && page_kills_ppro(pfn))) { - ClearPageReserved(page); - init_page_count(page); - __free_page(page); - totalhigh_pages++; - } else - SetPageReserved(page); + ClearPageReserved(page); + init_page_count(page); + __free_page(page); + totalhigh_pages++; } struct add_highpages_data { unsigned long start_pfn; unsigned long end_pfn; - int bad_ppro; }; static void __init add_highpages_work_fn(unsigned long start_pfn, @@ -312,10 +300,8 @@ static void __init add_highpages_work_fn(unsigned long start_pfn, struct page *page; unsigned long final_start_pfn, final_end_pfn; struct add_highpages_data *data; - int bad_ppro; data = (struct add_highpages_data *)datax; - bad_ppro = data->bad_ppro; final_start_pfn = max(start_pfn, data->start_pfn); final_end_pfn = min(end_pfn, data->end_pfn); @@ -327,29 +313,26 @@ static void __init add_highpages_work_fn(unsigned long start_pfn, if (!pfn_valid(node_pfn)) continue; page = pfn_to_page(node_pfn); - add_one_highpage_init(page, node_pfn, bad_ppro); + add_one_highpage_init(page, node_pfn); } } void __init add_highpages_with_active_regions(int nid, unsigned long start_pfn, - unsigned long end_pfn, - int bad_ppro) + unsigned long end_pfn) { struct add_highpages_data data; data.start_pfn = start_pfn; data.end_pfn = end_pfn; - data.bad_ppro = bad_ppro; work_with_active_regions(nid, add_highpages_work_fn, &data); } #ifndef CONFIG_NUMA -static void __init set_highmem_pages_init(int bad_ppro) +static void __init set_highmem_pages_init(void) { - add_highpages_with_active_regions(0, highstart_pfn, highend_pfn, - bad_ppro); + add_highpages_with_active_regions(0, highstart_pfn, highend_pfn); totalram_pages += totalhigh_pages; } @@ -358,7 +341,7 @@ static void __init set_highmem_pages_init(int bad_ppro) #else # define kmap_init() do { } while (0) # define permanent_kmaps_init(pgd_base) do { } while (0) -# define set_highmem_pages_init(bad_ppro) do { } while (0) +# define set_highmem_pages_init() do { } while (0) #endif /* CONFIG_HIGHMEM */ pteval_t __PAGE_KERNEL = _PAGE_KERNEL; @@ -605,13 +588,11 @@ static struct kcore_list kcore_mem, kcore_vmalloc; void __init mem_init(void) { int codesize, reservedpages, datasize, initsize; - int tmp, bad_ppro; + int tmp; #ifdef CONFIG_FLATMEM BUG_ON(!mem_map); #endif - bad_ppro = ppro_with_ram_bug(); - #ifdef CONFIG_HIGHMEM /* check that fixmap and pkmap do not overlap */ if (PKMAP_BASE + LAST_PKMAP*PAGE_SIZE >= FIXADDR_START) { @@ -634,7 +615,7 @@ void __init mem_init(void) if (page_is_ram(tmp) && PageReserved(pfn_to_page(tmp))) reservedpages++; - set_highmem_pages_init(bad_ppro); + set_highmem_pages_init(); codesize = (unsigned long) &_etext - (unsigned long) &_text; datasize = (unsigned long) &_edata - (unsigned long) &_etext; diff --git a/include/asm-x86/highmem.h b/include/asm-x86/highmem.h index 85c4fea41ff6..4514b16cc723 100644 --- a/include/asm-x86/highmem.h +++ b/include/asm-x86/highmem.h @@ -75,7 +75,7 @@ struct page *kmap_atomic_to_page(void *ptr); #define flush_cache_kmaps() do { } while (0) extern void add_highpages_with_active_regions(int nid, unsigned long start_pfn, - unsigned long end_pfn, int bad_ppro); + unsigned long end_pfn); #endif /* __KERNEL__ */ diff --git a/include/asm-x86/numa_32.h b/include/asm-x86/numa_32.h index 03d0f7a9bf02..a02674f64869 100644 --- a/include/asm-x86/numa_32.h +++ b/include/asm-x86/numa_32.h @@ -5,7 +5,7 @@ extern int pxm_to_nid(int pxm); #ifdef CONFIG_NUMA extern void __init remap_numa_kva(void); -extern void set_highmem_pages_init(int); +extern void set_highmem_pages_init(void); #else static inline void remap_numa_kva(void) { -- 2.11.0