diff options
| author | Michael Neuling <mikey@neuling.org> | 2007-12-06 09:24:48 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-12-11 05:45:56 +0300 |
| commit | 584f8b71a2e8abdaeb4b6f4fddaf542b61392453 (patch) | |
| tree | c14f26334e3a3524046f0790f96564a4a4f22d92 /arch/powerpc/mm/slb_low.S | |
| parent | 44ef339073f67d4abcc62ae52a5fbc069d7a4d29 (diff) | |
| download | linux-584f8b71a2e8abdaeb4b6f4fddaf542b61392453.tar.xz | |
[POWERPC] Use SLB size from the device tree
Currently we hardwire the number of SLBs to 64, but PAPR says we
should use the ibm,slb-size property to obtain the number of SLB
entries. This uses this property instead of assuming 64. If no
property is found, we assume 64 entries as before.
This soft patches the SLB handler, so it shouldn't change performance
at all.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/mm/slb_low.S')
| -rw-r--r-- | arch/powerpc/mm/slb_low.S | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S index 1328a81a84aa..657f6b37e9df 100644 --- a/arch/powerpc/mm/slb_low.S +++ b/arch/powerpc/mm/slb_low.S @@ -227,8 +227,9 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES) 7: ld r10,PACASTABRR(r13) addi r10,r10,1 - /* use a cpu feature mask if we ever change our slb size */ - cmpldi r10,SLB_NUM_ENTRIES + /* This gets soft patched on boot. */ +_GLOBAL(slb_compare_rr_to_size) + cmpldi r10,0 blt+ 4f li r10,SLB_NUM_BOLTED |