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| author | Eric Biggers <ebiggers@google.com> | 2024-04-05 20:26:10 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-30 09:44:05 +0200 |
| commit | 74737ae1310170ce16a6cd3b2d9de249187eefcb (patch) | |
| tree | 92597509348048debdb28bf6c12ef51b9b6903a1 | |
| parent | f23d6d4d8fcd2a5e50841b439cc6da9bb92f8008 (diff) | |
crypto: x86/sha512-avx2 - add missing vzeroupper
[ Upstream commit 6a24fdfe1edbafacdacd53516654d99068f20eec ]
Since sha512_transform_rorx() uses ymm registers, execute vzeroupper
before returning from it. This is necessary to avoid reducing the
performance of SSE code.
Fixes: e01d69cb0195 ("crypto: sha512 - Optimized SHA512 x86_64 assembly routine using AVX instructions.")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/x86/crypto/sha512-avx2-asm.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/crypto/sha512-avx2-asm.S b/arch/x86/crypto/sha512-avx2-asm.S index f08496cd6870..24973f42c43f 100644 --- a/arch/x86/crypto/sha512-avx2-asm.S +++ b/arch/x86/crypto/sha512-avx2-asm.S @@ -680,6 +680,7 @@ SYM_TYPED_FUNC_START(sha512_transform_rorx) pop %r12 pop %rbx + vzeroupper RET SYM_FUNC_END(sha512_transform_rorx) |