[ARM] Add initial sparsemem support

[cascardo/linux.git] / include / asm-arm / memory.h

diff --git a/include/asm-arm/memory.h b/include/asm-arm/memory.h
index d9bfb39..9ba4d71 100644 (file)
--- a/include/asm-arm/memory.h
+++ b/include/asm-arm/memory.h
@@ -217,7 +217,10 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
 #ifndef CONFIG_DISCONTIGMEM
 
 #define ARCH_PFN_OFFSET                PHYS_PFN_OFFSET
+
+#ifndef CONFIG_SPARSEMEM
 #define pfn_valid(pfn)         ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
+#endif
 
 #define virt_to_page(kaddr)    pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
 #define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)