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authorAndi Kleen <ak@suse.de>2005-11-05 17:25:53 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-14 19:55:14 -0800
commit6b75aeedde1e8a8513393d3c1367bf81bc5b0c67 (patch)
treef8f25d30bf097a58e535adf3ac84b89b027b33e3 /include
parent[PATCH] x86_64: Unmap NULL during early bootup (diff)
downloadlinux-dev-6b75aeedde1e8a8513393d3c1367bf81bc5b0c67.tar.xz
linux-dev-6b75aeedde1e8a8513393d3c1367bf81bc5b0c67.zip
[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 <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86_64/page.h2
-rw-r--r--include/asm-x86_64/pgtable.h4
2 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h
index e5ab4d231f2c..06e489f32472 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 a204efb553dc..f8e87a57f3a7 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 })