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author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-06-16 16:11:08 -0700 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 10:38:19 +0200 |
commit | cc9f7a0ccf000d4db5fbdc7b0ae48eefea102f69 (patch) | |
tree | 582125558bf4975446ae76f35b297bf4ce864bc1 /arch/x86/mm/init_32.c | |
parent | 41c094fd3ca54f1a71233049cf136ff94c91f4ae (diff) | |
download | op-kernel-dev-cc9f7a0ccf000d4db5fbdc7b0ae48eefea102f69.zip op-kernel-dev-cc9f7a0ccf000d4db5fbdc7b0ae48eefea102f69.tar.gz |
x86: kill bad_ppro
so don't punish all other cpus without that problem when init highmem
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/init_32.c')
-rw-r--r-- | arch/x86/mm/init_32.c | 43 |
1 files changed, 12 insertions, 31 deletions
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index ba07a48..fb5694d 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; |