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
...@@ -101,7 +101,7 @@ extern phys_addr_t kernstart_addr; ...@@ -101,7 +101,7 @@ extern phys_addr_t kernstart_addr;
#ifdef CONFIG_FLATMEM #ifdef CONFIG_FLATMEM
#define ARCH_PFN_OFFSET (MEMORY_START >> PAGE_SHIFT) #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 #endif
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
......
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