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author | Ingo Molnar <mingo@elte.hu> | 2009-06-17 10:52:15 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-06-17 10:56:49 (GMT) |
commit | eadb8a091b27a840de7450f84ecff5ef13476424 (patch) | |
tree | 58c3782d40def63baa8167f3d31e3048cb4c7660 /arch/x86/mm/init_32.c | |
parent | 73874005cd8800440be4299bd095387fff4b90ac (diff) | |
parent | 65795efbd380a832ae508b04dba8f8e53f0b84d9 (diff) | |
download | linux-fsl-qoriq-eadb8a091b27a840de7450f84ecff5ef13476424.tar.xz |
Merge branch 'linus' into tracing/hw-breakpoints
Conflicts:
arch/x86/Kconfig
arch/x86/kernel/traps.c
arch/x86/power/cpu.c
arch/x86/power/cpu_32.c
kernel/Makefile
Semantic conflict:
arch/x86/kernel/hw_breakpoint.c
Merge reason: Resolve the conflicts, move from put_cpu_no_sched() to
put_cpu() in arch/x86/kernel/hw_breakpoint.c.
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 | 73 |
1 files changed, 11 insertions, 62 deletions
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 749559e..3cd7711 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -49,12 +49,9 @@ #include <asm/paravirt.h> #include <asm/setup.h> #include <asm/cacheflush.h> +#include <asm/page_types.h> #include <asm/init.h> -unsigned long max_low_pfn_mapped; -unsigned long max_pfn_mapped; - -DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); unsigned long highstart_pfn, highend_pfn; static noinline int do_test_wp_bit(void); @@ -114,7 +111,7 @@ static pte_t * __init one_page_table_init(pmd_t *pmd) pte_t *page_table = NULL; if (after_bootmem) { -#ifdef CONFIG_DEBUG_PAGEALLOC +#if defined(CONFIG_DEBUG_PAGEALLOC) || defined(CONFIG_KMEMCHECK) page_table = (pte_t *) alloc_bootmem_pages(PAGE_SIZE); #endif if (!page_table) @@ -567,7 +564,7 @@ static inline void save_pg_dir(void) } #endif /* !CONFIG_ACPI_SLEEP */ -void zap_low_mappings(void) +void zap_low_mappings(bool early) { int i; @@ -584,64 +581,16 @@ void zap_low_mappings(void) set_pgd(swapper_pg_dir+i, __pgd(0)); #endif } - flush_tlb_all(); -} -int nx_enabled; + if (early) + __flush_tlb(); + else + flush_tlb_all(); +} pteval_t __supported_pte_mask __read_mostly = ~(_PAGE_NX | _PAGE_GLOBAL | _PAGE_IOMAP); EXPORT_SYMBOL_GPL(__supported_pte_mask); -#ifdef CONFIG_X86_PAE - -static int disable_nx __initdata; - -/* - * noexec = on|off - * - * Control non executable mappings. - * - * on Enable - * off Disable - */ -static int __init noexec_setup(char *str) -{ - if (!str || !strcmp(str, "on")) { - if (cpu_has_nx) { - __supported_pte_mask |= _PAGE_NX; - disable_nx = 0; - } - } else { - if (!strcmp(str, "off")) { - disable_nx = 1; - __supported_pte_mask &= ~_PAGE_NX; - } else { - return -EINVAL; - } - } - - return 0; -} -early_param("noexec", noexec_setup); - -void __init set_nx(void) -{ - unsigned int v[4], l, h; - - if (cpu_has_pae && (cpuid_eax(0x80000000) > 0x80000001)) { - cpuid(0x80000001, &v[0], &v[1], &v[2], &v[3]); - - if ((v[3] & (1 << 20)) && !disable_nx) { - rdmsr(MSR_EFER, l, h); - l |= EFER_NX; - wrmsr(MSR_EFER, l, h); - nx_enabled = 1; - __supported_pte_mask |= _PAGE_NX; - } - } -} -#endif - /* user-defined highmem size */ static unsigned int highmem_pages = -1; @@ -761,15 +710,15 @@ void __init initmem_init(unsigned long start_pfn, highstart_pfn = highend_pfn = max_pfn; if (max_pfn > max_low_pfn) highstart_pfn = max_low_pfn; - memory_present(0, 0, highend_pfn); e820_register_active_regions(0, 0, highend_pfn); + sparse_memory_present_with_active_regions(0); printk(KERN_NOTICE "%ldMB HIGHMEM available.\n", pages_to_mb(highend_pfn - highstart_pfn)); num_physpages = highend_pfn; high_memory = (void *) __va(highstart_pfn * PAGE_SIZE - 1) + 1; #else - memory_present(0, 0, max_low_pfn); e820_register_active_regions(0, 0, max_low_pfn); + sparse_memory_present_with_active_regions(0); num_physpages = max_low_pfn; high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1; #endif @@ -1011,7 +960,7 @@ void __init mem_init(void) test_wp_bit(); save_pg_dir(); - zap_low_mappings(); + zap_low_mappings(true); } #ifdef CONFIG_MEMORY_HOTPLUG |