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

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 <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
needcaffeine · Apr 7, 2010 · 43b5fef · 43b5fef
1 parent 6fe9d1f
commit 43b5fef
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/arch/powerpc/include/asm/pgtable-ppc32.h b/arch/powerpc/include/asm/pgtable-ppc32.h
@@ -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))