diff options
Diffstat (limited to 'include/asm-x86_64/page.h')
| -rw-r--r-- | include/asm-x86_64/page.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h index 135ffaa0393..e5ab4d231f2 100644 --- a/include/asm-x86_64/page.h +++ b/include/asm-x86_64/page.h @@ -32,6 +32,8 @@ #ifdef __KERNEL__ #ifndef __ASSEMBLY__ +extern unsigned long end_pfn; + void clear_page(void *); void copy_page(void *, void *); @@ -111,7 +113,7 @@ typedef struct { unsigned long pgprot; } pgprot_t; #ifdef CONFIG_FLATMEM #define pfn_to_page(pfn) (mem_map + (pfn)) #define page_to_pfn(page) ((unsigned long)((page) - mem_map)) -#define pfn_valid(pfn) ((pfn) < max_mapnr) +#define pfn_valid(pfn) ((pfn) < end_pfn) #endif #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) |