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Commit 81c386cc authored by Scott Wood's avatar Scott Wood Committed by Benjamin Herrenschmidt
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powerpc: Fix pfn_valid() when memory starts at a non-zero address 



max_mapnr is a pfn, not an index innto mem_map[].  So don't add
ARCH_PFN_OFFSET a second time.

Signed-off-by: default avatarScott Wood <scottwood@freescale.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 8dbdea84

arch/powerpc/include/asm/page.h

+1 −1
Original line number Diff line number Diff line
@@ -101,7 +101,7 @@ extern phys_addr_t kernstart_addr; 


#ifdef CONFIG_FLATMEM

#define ARCH_PFN_OFFSET		(MEMORY_START >> PAGE_SHIFT)

#define pfn_valid(pfn)		((pfn) >= ARCH_PFN_OFFSET && (pfn) < (ARCH_PFN_OFFSET + max_mapnr))

#define pfn_valid(pfn)		((pfn) >= ARCH_PFN_OFFSET && (pfn) < max_mapnr)

#endif



#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)