Commit 924a158a authored Apr 26, 2009 by Russell King Committed by Russell King Apr 26, 2009

[ARM] Convert pmd_page() to be highmem safe



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>

parent 0c8454f5

arch/arm/include/asm/pgtable.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -342,7 +342,7 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd)
		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,