diff options
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/init_32.c | 3 | ||||
| -rw-r--r-- | arch/x86/mm/init_64.c | 3 | ||||
| -rw-r--r-- | arch/x86/mm/ioremap.c | 33 |
3 files changed, 32 insertions, 7 deletions
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index c3789bb1930..bbe044dbe01 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -31,6 +31,7 @@ #include <linux/cpumask.h> #include <asm/asm.h> +#include <asm/bios_ebda.h> #include <asm/processor.h> #include <asm/system.h> #include <asm/uaccess.h> @@ -969,6 +970,8 @@ void __init mem_init(void) int codesize, reservedpages, datasize, initsize; int tmp; + start_periodic_check_for_corruption(); + #ifdef CONFIG_FLATMEM BUG_ON(!mem_map); #endif diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 83e13f2d53d..3e10054c573 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -31,6 +31,7 @@ #include <linux/nmi.h> #include <asm/processor.h> +#include <asm/bios_ebda.h> #include <asm/system.h> #include <asm/uaccess.h> #include <asm/pgtable.h> @@ -881,6 +882,8 @@ void __init mem_init(void) { long codesize, reservedpages, datasize, initsize; + start_periodic_check_for_corruption(); + pci_iommu_alloc(); /* clear_bss() already clear the empty_zero_page */ diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index 10b52309aef..8cbeda15cd2 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -24,18 +24,26 @@ #ifdef CONFIG_X86_64 -unsigned long __phys_addr(unsigned long x) +static inline int phys_addr_valid(unsigned long addr) { - if (x >= __START_KERNEL_map) - return x - __START_KERNEL_map + phys_base; - return x - PAGE_OFFSET; + return addr < (1UL << boot_cpu_data.x86_phys_bits); } -EXPORT_SYMBOL(__phys_addr); -static inline int phys_addr_valid(unsigned long addr) +unsigned long __phys_addr(unsigned long x) { - return addr < (1UL << boot_cpu_data.x86_phys_bits); + if (x >= __START_KERNEL_map) { + x -= __START_KERNEL_map; + VIRTUAL_BUG_ON(x >= KERNEL_IMAGE_SIZE); + x += phys_base; + } else { + VIRTUAL_BUG_ON(x < PAGE_OFFSET); + x -= PAGE_OFFSET; + VIRTUAL_BUG_ON(system_state == SYSTEM_BOOTING ? x > MAXMEM : + !phys_addr_valid(x)); + } + return x; } +EXPORT_SYMBOL(__phys_addr); #else @@ -44,6 +52,17 @@ static inline int phys_addr_valid(unsigned long addr) return 1; } +#ifdef CONFIG_DEBUG_VIRTUAL +unsigned long __phys_addr(unsigned long x) +{ + /* VMALLOC_* aren't constants; not available at the boot time */ + VIRTUAL_BUG_ON(x < PAGE_OFFSET || (system_state != SYSTEM_BOOTING && + is_vmalloc_addr((void *)x))); + return x - PAGE_OFFSET; +} +EXPORT_SYMBOL(__phys_addr); +#endif + #endif int page_is_ram(unsigned long pagenr) |