From 6b75aeedde1e8a8513393d3c1367bf81bc5b0c67 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Sat, 5 Nov 2005 17:25:53 +0100 Subject: [PATCH] [PATCH] x86_64: Don't apply __PHYSICAL_MASK to page frame numbers It is for physical addresses, not for PFNs. Pointed out by Tejun Heo. Cc: htejun@gmail.com Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/page.h | 2 +- include/asm-x86_64/pgtable.h | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h index e5ab4d2..06e489f 100644 --- a/include/asm-x86_64/page.h +++ b/include/asm-x86_64/page.h @@ -11,7 +11,7 @@ #define PAGE_SIZE (1UL << PAGE_SHIFT) #endif #define PAGE_MASK (~(PAGE_SIZE-1)) -#define PHYSICAL_PAGE_MASK (~(PAGE_SIZE-1) & (__PHYSICAL_MASK << PAGE_SHIFT)) +#define PHYSICAL_PAGE_MASK (~(PAGE_SIZE-1) & __PHYSICAL_MASK) #define THREAD_ORDER 1 #ifdef __ASSEMBLY__ diff --git a/include/asm-x86_64/pgtable.h b/include/asm-x86_64/pgtable.h index a204efb..f8e87a5 100644 --- a/include/asm-x86_64/pgtable.h +++ b/include/asm-x86_64/pgtable.h @@ -246,7 +246,7 @@ static inline unsigned long pud_bad(pud_t pud) #define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT)) /* FIXME: is this right? */ #define pte_page(x) pfn_to_page(pte_pfn(x)) -#define pte_pfn(x) ((pte_val(x) >> PAGE_SHIFT) & __PHYSICAL_MASK) +#define pte_pfn(x) ((pte_val(x) & __PHYSICAL_MASK) >> PAGE_SHIFT) static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot) { @@ -353,7 +353,7 @@ static inline pud_t *__pud_offset_k(pud_t *pud, unsigned long address) #define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0) #define pmd_bad(x) ((pmd_val(x) & (~PTE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE ) #define pfn_pmd(nr,prot) (__pmd(((nr) << PAGE_SHIFT) | pgprot_val(prot))) -#define pmd_pfn(x) ((pmd_val(x) >> PAGE_SHIFT) & __PHYSICAL_MASK) +#define pmd_pfn(x) ((pmd_val(x) & __PHYSICAL_MASK) >> PAGE_SHIFT) #define pte_to_pgoff(pte) ((pte_val(pte) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT) #define pgoff_to_pte(off) ((pte_t) { ((off) << PAGE_SHIFT) | _PAGE_FILE }) -- 2.7.4