diff options
| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-08-18 09:33:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-08-18 09:33:25 -0700 |
| commit | 844d6c48be7f11592d287a9fe2183007c4ebfbbb (patch) | |
| tree | c5df0cb0520a0537b49db5708af288c7991e5f82 /arch/ppc | |
| parent | 0894910cce8d9105e5d8457fd8686fe96dc958eb (diff) | |
| parent | 2b02d13996fe28478e45605de9bd8bdca25718de (diff) | |
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Fix invalid semicolon after if statement
[POWERPC] ps3: Fix no storage devices found
[POWERPC] Fix for assembler -g
[POWERPC] Fix small race in 44x tlbie function
[POWERPC] Remove unused code causing a compile warning
[POWERPC] cell: Fix errno for modular spufs_create with invalid neighbour
Diffstat (limited to 'arch/ppc')
| -rw-r--r-- | arch/ppc/kernel/misc.S | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/ppc/kernel/misc.S b/arch/ppc/kernel/misc.S index 0da55368655..a22e1f4d94c 100644 --- a/arch/ppc/kernel/misc.S +++ b/arch/ppc/kernel/misc.S @@ -237,9 +237,19 @@ _GLOBAL(_tlbie) mfspr r4,SPRN_MMUCR mfspr r5,SPRN_PID /* Get PID */ rlwimi r4,r5,0,24,31 /* Set TID */ - mtspr SPRN_MMUCR,r4 + /* We have to run the search with interrupts disabled, even critical + * and debug interrupts (in fact the only critical exceptions we have + * are debug and machine check). Otherwise an interrupt which causes + * a TLB miss can clobber the MMUCR between the mtspr and the tlbsx. */ + mfmsr r5 + lis r6,(MSR_EE|MSR_CE|MSR_ME|MSR_DE)@ha + addi r6,r6,(MSR_EE|MSR_CE|MSR_ME|MSR_DE)@l + andc r6,r5,r6 + mtmsr r6 + mtspr SPRN_MMUCR,r4 tlbsx. r3, 0, r3 + mtmsr r5 bne 10f sync /* There are only 64 TLB entries, so r3 < 64, |