path: root/arch
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authorMichael Ellerman <michael@ellerman.id.au>2011-04-07 21:22:23 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-04-27 14:18:48 +1000
commita7b8ad405862fb10e496ce839d423dfc94ac821b (patch)
tree555b32f7672568650556a81fcc34d3ef27a52e3c /arch
parentb91e136cdf88e19e998dbf4631ead266de4b80b5 (diff)
powerpc/book3e: Fix extlb size
The calculation of the size for the exception save area of the TLB miss handler is wrong, luckily it's too big not too small. Rework it to make it a bit clearer, and also correct. We want 3 save areas, each EX_TLB_SIZE _bytes_. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index f6da4f517fc..65c13c48db4 100644
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -106,7 +106,8 @@ struct paca_struct {
pgd_t *pgd; /* Current PGD */
pgd_t *kernel_pgd; /* Kernel PGD */
u64 exgen[8] __attribute__((aligned(0x80)));
- u64 extlb[EX_TLB_SIZE*3] __attribute__((aligned(0x80)));
+ /* We can have up to 3 levels of reentrancy in the TLB miss handler */
+ u64 extlb[3][EX_TLB_SIZE / sizeof(u64)] __attribute__((aligned(0x80)));
u64 exmc[8]; /* used for machine checks */
u64 excrit[8]; /* used for crit interrupts */
u64 exdbg[8]; /* used for debug interrupts */