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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-12-18 19:13:38 +0000
committerPaul Mackerras <paulus@samba.org>2008-12-21 14:21:16 +1100
commitf048aace29e007f2b642097e2da8231e0e9cce2d (patch)
tree5e99b1d1d37817703132e97388994386a7bee8da /arch/powerpc/mm/mem.c
parent7c03d653cd257793dc40520c94e229b5fd0578e7 (diff)
powerpc/mm: Add SMP support to no-hash TLB handling
This commit moves the whole no-hash TLB handling out of line into a new tlb_nohash.c file, and implements some basic SMP support using IPIs and/or broadcast tlbivax instructions. Note that I'm using local invalidations for D->I cache coherency. At worst, if another processor is trying to execute the same and has the old entry in its TLB, it will just take a fault and re-do the TLB flush locally (it won't re-do the cache flush in any case). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/mm/mem.c')
-rw-r--r--arch/powerpc/mm/mem.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index b9e1a1da6e5..8fee696fb79 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -488,7 +488,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
* we invalidate the TLB here, thus avoiding dcbst
* misbehaviour.
*/
- _tlbie(address, 0 /* 8xx doesn't care about PID */);
+ _tlbil_va(address, 0 /* 8xx doesn't care about PID */);
#endif
/* The _PAGE_USER test should really be _PAGE_EXEC, but
* older glibc versions execute some code from no-exec