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crypto: x86/nh-avx2 - add missing vzeroupper

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BugLink: https://bugs.launchpad.net/bugs/2071621

[ Upstream commit 4ad096cca942959871d8ff73826d30f81f856f6e ]

Since nh_avx2() uses ymm registers, execute vzeroupper before returning
from it.  This is necessary to avoid reducing the performance of SSE
code.

Fixes: 0f961f9f67 ("crypto: x86/nhpoly1305 - add AVX2 accelerated NHPoly1305")
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>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Eric Biggers
2024-04-05 20:26:08 -04:00
committed by Stefan Bader
parent 4f6dd87355
commit 26824d3d25
1 changed files with 1 additions and 0 deletions
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arch/x86/crypto/nh-avx2-x86_64.S
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@@ -154,5 +154,6 @@ SYM_TYPED_FUNC_START(nh_avx2)
vpaddq T1, T0, T0
vpaddq T4, T0, T0
vmovdqu T0, (HASH)
vzeroupper
RET
SYM_FUNC_END(nh_avx2)