diff options
Diffstat (limited to 'include/asm-arm/arch-sa1100/mmzone.h')
| -rw-r--r-- | include/asm-arm/arch-sa1100/mmzone.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/include/asm-arm/arch-sa1100/mmzone.h b/include/asm-arm/arch-sa1100/mmzone.h index 09e90be62..c35fdfcee 100644 --- a/include/asm-arm/arch-sa1100/mmzone.h +++ b/include/asm-arm/arch-sa1100/mmzone.h @@ -41,11 +41,11 @@ extern pg_data_t sa1100_node_data[]; * Given a kernel address, find the home node of the underlying memory. */ #define KVADDR_TO_NID(addr) \ - (((unsigned long)(addr) & 0x18000000) >> 27) + (((unsigned long)(addr) - 0xc0000000) >> 27) /* * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory - * and returns the the mem_map of that node. + * and returns the mem_map of that node. */ #define ADDR_TO_MAPBASE(kaddr) \ NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr))) @@ -66,7 +66,12 @@ extern pg_data_t sa1100_node_data[]; (ADDR_TO_MAPBASE(kaddr) + LOCAL_MAP_NR(kaddr)) /* - * Didn't find the best way to validate a page pointer yet... + * VALID_PAGE returns a non-zero value if given page pointer is valid. + * This assumes all node's mem_maps are stored within the node they refer to. */ +#define VALID_PAGE(page) \ +({ unsigned int node = KVADDR_TO_NID(page); \ + ( (node < 4) && \ + ((unsigned)((page) - NODE_MEM_MAP(node)) < NODE_DATA(node)->node_size) ); \ +}) -#define VALID_PAGE(page) (1) |