diff options
Diffstat (limited to 'include/asm-powerpc/pgtable.h')
| -rw-r--r-- | include/asm-powerpc/pgtable.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/asm-powerpc/pgtable.h b/include/asm-powerpc/pgtable.h index 0303f57366c1..3518adb2cc18 100644 --- a/include/asm-powerpc/pgtable.h +++ b/include/asm-powerpc/pgtable.h @@ -58,6 +58,17 @@ struct mm_struct; #define IMALLOC_END (VMALLOC_START + PGTABLE_RANGE) /* + * Region IDs + */ +#define REGION_SHIFT 60UL +#define REGION_MASK (0xfUL << REGION_SHIFT) +#define REGION_ID(ea) (((unsigned long)(ea)) >> REGION_SHIFT) + +#define VMALLOC_REGION_ID (REGION_ID(VMALLOC_START)) +#define KERNEL_REGION_ID (REGION_ID(PAGE_OFFSET)) +#define USER_REGION_ID (0UL) + +/* * Common bits in a linux-style PTE. These match the bits in the * (hardware-defined) PowerPC PTE as closely as possible. Additional * bits may be defined in pgtable-*.h |