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[ARM] Convert pmd_page() to be highmem safe

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In the long run, we may want to place page tables in highmem.  However,
pmd_page() has traditionally been coded to convert the physical address
to a virtual one, which won't work with highmem pages.  Instead,
translate the physical address to a PFN, and then convert the PFN to a
struct page instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2009-04-26 13:14:52 +01:00
committed by Russell King
parent 0c8454f566
commit 924a158a12
1 changed files with 1 additions and 1 deletions
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arch/arm/include/asm/pgtable.h
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@@ -342,7 +342,7 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd)
return __va(ptr); return __va(ptr);
} }
#define pmd_page(pmd) virt_to_page(__va(pmd_val(pmd))) #define pmd_page(pmd) pfn_to_page(__phys_to_pfn(pmd_val(pmd)))
/* /*
* Conversion functions: convert a page and protection to a page entry, * Conversion functions: convert a page and protection to a page entry,