diff options
| author | David S. Miller <davem@davemloft.net> | 2006-01-31 18:33:49 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:11:26 -0800 |
| commit | 2f7ee7c63f08b7f883b710a29d91c1891b81b8e1 (patch) | |
| tree | c0539482cecfd3cbc0b983a23058315811dc8b55 /include/asm-sparc64/tsb.h | |
| parent | a8b900d801697609d1b56cc9c110148c64678068 (diff) | |
[SPARC64]: Increase swapper_tsb size to 32K.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc64/tsb.h')
| -rw-r--r-- | include/asm-sparc64/tsb.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/include/asm-sparc64/tsb.h b/include/asm-sparc64/tsb.h index 09ab3aaa8d2..1addd91d720 100644 --- a/include/asm-sparc64/tsb.h +++ b/include/asm-sparc64/tsb.h @@ -143,6 +143,14 @@ add REG1, (3 * 8), REG1; \ 99: + /* We use a 32K TSB for the whole kernel, this allows to + * handle about 16MB of modules and vmalloc mappings without + * incurring many hash conflicts. + */ +#define KERNEL_TSB_SIZE_BYTES (32 * 1024) +#define KERNEL_TSB_NENTRIES \ + (KERNEL_TSB_SIZE_BYTES / 16) + /* Do a kernel TSB lookup at tl>0 on VADDR+TAG, branch to OK_LABEL * on TSB hit. REG1, REG2, REG3, and REG4 are used as temporaries * and the found TTE will be left in REG1. REG3 and REG4 must @@ -150,12 +158,11 @@ * * VADDR and TAG will be preserved and not clobbered by this macro. */ - /* XXX non-8K base page size support... */ #define KERN_TSB_LOOKUP_TL1(VADDR, TAG, REG1, REG2, REG3, REG4, OK_LABEL) \ sethi %hi(swapper_tsb), REG1; \ or REG1, %lo(swapper_tsb), REG1; \ - srlx VADDR, 13, REG2; \ - and REG2, (512 - 1), REG2; \ + srlx VADDR, PAGE_SHIFT, REG2; \ + and REG2, (KERNEL_TSB_NENTRIES - 1), REG2; \ sllx REG2, 4, REG2; \ add REG1, REG2, REG2; \ ldda [REG2] ASI_NUCLEUS_QUAD_LDD, REG3; \ |