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| author | David Gibson <dwg@au1.ibm.com> | 2005-08-31 14:34:05 +1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@evo.osdl.org> | 2005-09-01 10:48:20 -0700 |
| commit | 319e76a1ae835c34a2838c2bfebe3db4d5a6b387 (patch) | |
| tree | 7e4ce062242df4690c6711ae1274d76e8ef5fce9 /arch/ppc64 | |
| parent | 7eaa414ee86cda4c153002ed218b9a0ad17f7de1 (diff) | |
| download | op-kernel-dev-319e76a1ae835c34a2838c2bfebe3db4d5a6b387.zip op-kernel-dev-319e76a1ae835c34a2838c2bfebe3db4d5a6b387.tar.gz | |
[PATCH] Fix bug in ppc64 dynamic hugepage support
In adjusting the logic for SLB miss for the dynamic hugepage stuff, I
messed up the !CONFIG_HUGETLB_PAGE case, failing to set the SLB flags
properly.
This fixes it. It also streamlines the logic for the HUGETLB_PAGE case
(removing a couple of branches) while we're at it.
Booted, and roughly tested on POWER5 (with and without HUGETLB_PAGE),
iSeries/RS64 (no hugepage available), and G5 (with and without
HUGETLB_PAGE).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/ppc64')
| -rw-r--r-- | arch/ppc64/mm/slb_low.S | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/arch/ppc64/mm/slb_low.S b/arch/ppc64/mm/slb_low.S index bab2558..698d6b9 100644 --- a/arch/ppc64/mm/slb_low.S +++ b/arch/ppc64/mm/slb_low.S @@ -97,25 +97,21 @@ BEGIN_FTR_SECTION lhz r9,PACAHIGHHTLBAREAS(r13) srdi r11,r3,(HTLB_AREA_SHIFT-SID_SHIFT) srd r9,r9,r11 - andi. r9,r9,1 - bne 5f + lhz r11,PACALOWHTLBAREAS(r13) + srd r11,r11,r3 + or r9,r9,r11 +END_FTR_SECTION_IFSET(CPU_FTR_16M_PAGE) +#endif /* CONFIG_HUGETLB_PAGE */ li r11,SLB_VSID_USER - cmpldi r3,16 - bge 6f - - lhz r9,PACALOWHTLBAREAS(r13) - srd r9,r9,r3 - andi. r9,r9,1 - - beq 6f - -5: li r11,SLB_VSID_USER|SLB_VSID_L +#ifdef CONFIG_HUGETLB_PAGE +BEGIN_FTR_SECTION + rldimi r11,r9,8,55 /* shift masked bit into SLB_VSID_L */ END_FTR_SECTION_IFSET(CPU_FTR_16M_PAGE) #endif /* CONFIG_HUGETLB_PAGE */ -6: ld r9,PACACONTEXTID(r13) + ld r9,PACACONTEXTID(r13) rldimi r3,r9,USER_ESID_BITS,0 9: /* r3 = protovsid, r11 = flags, r10 = esid_data, cr7 = <>KERNELBASE */ |
