powerpc/ppc32: Fixup pmd_page to work when ARCH_PFN_OFFSET is non-zero
authorJason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tue, 9 Mar 2010 09:35:00 +0000 (09:35 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Wed, 7 Apr 2010 08:00:30 +0000 (18:00 +1000)
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>
arch/powerpc/include/asm/pgtable-ppc32.h

index 55646adfa843f604019fe5c35d9da6425b2d0e6e..a7db96f2b5c38dfb4257974aace3739aa11361c7 100644 (file)
@@ -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))