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powerpc/book3e: Fix extlb size

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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>
This commit is contained in:
Michael Ellerman 2011-04-07 21:22:23 +00:00 committed by Benjamin Herrenschmidt
parent b91e136cdf
commit a7b8ad4058
1 changed files with 2 additions and 1 deletions
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3
arch/powerpc/include/asm/paca.h
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@ -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 */