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| author | Jiri Kosina <jkosina@suse.cz> | 2008-06-04 10:26:59 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2008-06-04 10:26:59 +0200 |
| commit | f38bb7de289f5c15e287386d35e9c325f1062c49 (patch) | |
| tree | 38e69a9ecea18243e3f66bcf51bc89cd7b8f0c94 /include/asm-x86/page.h | |
| parent | 2d4b3f37ded8998a362c8d0b4be02f583dd9a002 (diff) | |
| parent | c3b25b32e8bef526cca748e1ba023c6bdd705a99 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
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 b381f4a5a0b..dc936dddf16 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 |