diff options
Diffstat (limited to 'include/asm-mips/page.h')
| -rw-r--r-- | include/asm-mips/page.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h index 4035ec79ecd..3d262c01521 100644 --- a/include/asm-mips/page.h +++ b/include/asm-mips/page.h @@ -145,6 +145,25 @@ typedef struct { unsigned long pgprot; } pgprot_t; #endif #endif +#ifdef CONFIG_FLATMEM + +#define pfn_valid(pfn) ((pfn) < max_mapnr) + +#elif defined(CONFIG_NEED_MULTIPLE_NODES) + +#define pfn_valid(pfn) \ +({ \ + unsigned long __pfn = (pfn); \ + int __n = pfn_to_nid(__pfn); \ + ((__n >= 0) ? (__pfn < NODE_DATA(__n)->node_start_pfn + \ + NODE_DATA(__n)->node_spanned_pages) \ + : 0); \ +}) + +#else +#error Provide a definition of pfn_valid +#endif + #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) |