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powerpc/ppc32: Fixup pmd_page to work when ARCH_PFN_OFFSET is non-zero

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Instead of referencing mem_map directly, use pfn_to_page. Otherwise
the kernel crashes when trying to start userspace if ARCH_PFN_OFFSET is
non-zero and CONFIG_BOOKE is not defined

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Jason Gunthorpe 2010-03-09 09:35:00 +00:00 • committed by Benjamin Herrenschmidt
parent 6fe9d1facb
commit 43b5fefc24
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/include/asm/pgtable-ppc32.h
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@ -287,7 +287,7 @@ static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry)
#define pmd_page_vaddr(pmd) \
((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
#define pmd_page(pmd) \
(mem_map + (pmd_val(pmd) >> PAGE_SHIFT))
pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT)
#else
#define pmd_page_vaddr(pmd) \
((unsigned long) (pmd_val(pmd) & PAGE_MASK))