diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-06-16 11:23:36 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-16 11:23:36 +0200 |
| commit | 766d02786ecd22932beeb9ca8bad6d8c5a552ef9 (patch) | |
| tree | f6f2df0e35bbea914d1f4d12be6d02f128c73575 /include/asm-x86/page.h | |
| parent | 906d882cacecd37ad2fdd03ed2a9b232bcb9507e (diff) | |
| parent | 066519068ad2fbe98c7f45552b1f592903a9c8c8 (diff) | |
Merge branch 'linus' into core/rcutip-core-rcu-2008-06-16_09.23_Mon
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 |