diff options
| author | Stuart Menefy <stuart.menefy@st.com> | 2006-11-23 21:42:24 -0500 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2006-12-05 20:45:38 -0500 |
| commit | 9b3a53ab76771e3669e50086c131e1574fe25847 (patch) | |
| tree | 07dab1cd3972c7b82ddd5b7ad1e28628d7756dbb /include | |
| parent | 9daa0c257d6c200b58092e0bfc32b77c4618a8af (diff) | |
sh: TLB miss fast-path optimizations.
Handle simple TLB miss faults which can be resolved completely
from the page table in assembler.
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-sh/pgtable.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-sh/pgtable.h b/include/asm-sh/pgtable.h index b1f21e765640..fa625245051d 100644 --- a/include/asm-sh/pgtable.h +++ b/include/asm-sh/pgtable.h | |||
| @@ -43,12 +43,12 @@ extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]; | |||
| 43 | /* PGD bits */ | 43 | /* PGD bits */ |
| 44 | #define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS) | 44 | #define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS) |
| 45 | #define PGDIR_BITS (32 - PGDIR_SHIFT) | 45 | #define PGDIR_BITS (32 - PGDIR_SHIFT) |
| 46 | #define PGDIR_SIZE (1UL << PGDIR_SHIFT) | 46 | #define PGDIR_SIZE (1 << PGDIR_SHIFT) |
| 47 | #define PGDIR_MASK (~(PGDIR_SIZE-1)) | 47 | #define PGDIR_MASK (~(PGDIR_SIZE-1)) |
| 48 | 48 | ||
| 49 | /* Entries per level */ | 49 | /* Entries per level */ |
| 50 | #define PTRS_PER_PTE (1UL << PTE_BITS) | 50 | #define PTRS_PER_PTE (1 << PTE_BITS) |
| 51 | #define PTRS_PER_PGD (1UL << PGDIR_BITS) | 51 | #define PTRS_PER_PGD (1 << PGDIR_BITS) |
| 52 | 52 | ||
| 53 | #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) | 53 | #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) |
| 54 | #define FIRST_USER_ADDRESS 0 | 54 | #define FIRST_USER_ADDRESS 0 |