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| author | Ingo Molnar <mingo@elte.hu> | 2008-06-25 12:32:01 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-25 12:32:01 +0200 |
| commit | da7878d75b8520c9ae00d27dfbbce546a7bfdfbb (patch) | |
| tree | 547fd497a80818a60ac36831377d5df97868173c /include/asm-x86/page.h | |
| parent | 0e50a4c6ab94ffe7e5515b86b5df9e5abc8c6b13 (diff) | |
| parent | 543cf4cb3fe6f6cae3651ba918b9c56200b257d0 (diff) | |
Merge branch 'linus' into x86/pebstip-x86-pebs-2008-06-25_10.32_Wed
Diffstat (limited to 'include/asm-x86/page.h')
| -rw-r--r-- | include/asm-x86/page.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/include/asm-x86/page.h b/include/asm-x86/page.h index b381f4a5a0bd..dc936dddf161 100644 --- a/include/asm-x86/page.h +++ b/include/asm-x86/page.h @@ -10,8 +10,16 @@ #ifdef __KERNEL__ -#define PHYSICAL_PAGE_MASK (PAGE_MASK & __PHYSICAL_MASK) -#define PTE_MASK (_AT(long, PHYSICAL_PAGE_MASK)) +#define __PHYSICAL_MASK ((phys_addr_t)(1ULL << __PHYSICAL_MASK_SHIFT) - 1) +#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) + +/* Cast PAGE_MASK to a signed type so that it is sign-extended if + virtual addresses are 32-bits but physical addresses are larger + (ie, 32-bit PAE). */ +#define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) + +/* PTE_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */ +#define PTE_MASK ((pteval_t)PHYSICAL_PAGE_MASK) #define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) #define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) @@ -24,9 +32,6 @@ /* to align the pointer to the (next) page boundary */ #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) -#define __PHYSICAL_MASK _AT(phys_addr_t, (_AC(1,ULL) << __PHYSICAL_MASK_SHIFT) - 1) -#define __VIRTUAL_MASK ((_AC(1,UL) << __VIRTUAL_MASK_SHIFT) - 1) - #ifndef __ASSEMBLY__ #include <linux/types.h> #endif |