--- arch/sparc/include/asm/page_32.h

+++ arch/sparc/include/asm/page_32.h

@@ -143,7 +143,7 @@ extern unsigned long pfn_base;

#define phys_to_virt __va

#define ARCH_PFN_OFFSET (pfn_base)

-#define virt_to_page(kaddr) (mem_map + ((((unsigned long)(kaddr)-PAGE_OFFSET)>>PAGE_SHIFT)))

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

#define pfn_valid(pfn) (((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr))

#define virt_addr_valid(kaddr) ((((unsigned long)(kaddr)-PAGE_OFFSET)>>PAGE_SHIFT) < max_mapnr)