crypto: ghash-clmulni-intel - use C implementation for setkey()

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commit 8ceee72808 upstream.

The GHASH setkey() function uses SSE registers but fails to call
kernel_fpu_begin()/kernel_fpu_end(). Instead of adding these calls, and
then having to deal with the restriction that they cannot be called from
interrupt context, move the setkey() implementation to the C domain.

Note that setkey() does not use any particular SSE features and is not
expected to become a performance bottleneck.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Fixes: 0e1227d356 (crypto: ghash - Add PCLMULQDQ accelerated implementation)
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Ard Biesheuvel 2014-03-27 18:14:40 +01:00 • committed by Greg Kroah-Hartman

parent 3006275665

commit cf0983a4a1

2 changed files with 11 additions and 32 deletions

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29

arch/x86/crypto/ghash-clmulni-intel_asm.S

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14

arch/x86/crypto/ghash-clmulni-intel_glue.c

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