path: root/arch/arm/mach-clps711x/ceiva.c
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authorHerbert Xu <herbert@gondor.apana.org.au>2012-02-05 15:09:28 +1100
committerHerbert Xu <herbert@gondor.apana.org.au>2012-02-05 15:09:28 +1100
commit3a92d687c8015860a19213e3c102cad6b722f83c (patch)
tree9f133af75426149336883da050848c4024ef2928 /arch/arm/mach-clps711x/ceiva.c
parent58d7d18b5268febb8b1391c6dffc8e2aaa751fcd (diff)
crypto: sha512 - Avoid stack bloat on i386
Unfortunately in reducing W from 80 to 16 we ended up unrolling the loop twice. As gcc has issues dealing with 64-bit ops on i386 this means that we end up using even more stack space (>1K). This patch solves the W reduction by moving LOAD_OP/BLEND_OP into the loop itself, thus avoiding the need to duplicate it. While the stack space still isn't great (>0.5K) it is at least in the same ball park as the amount of stack used for our C sha1 implementation. Note that this patch basically reverts to the original code so the diff looks bigger than it really is. Cc: stable@vger.kernel.org Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm/mach-clps711x/ceiva.c')
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