5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Eric Biggers <ebiggers@xxxxxxxxxx> [ 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@xxxxxxxxxx> Acked-by: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx> Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- arch/x86/crypto/sha512-avx2-asm.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/crypto/sha512-avx2-asm.S b/arch/x86/crypto/sha512-avx2-asm.S index 5cdaab7d69015..1c4e5d88e167e 100644 --- a/arch/x86/crypto/sha512-avx2-asm.S +++ b/arch/x86/crypto/sha512-avx2-asm.S @@ -679,6 +679,7 @@ done_hash: pop %r12 pop %rbx + vzeroupper RET SYM_FUNC_END(sha512_transform_rorx) -- 2.43.0