crypto: x86/sha256-avx2 - add missing vzeroupper

Since sha256_transform_rorx() uses ymm registers, execute vzeroupper before returning from it. This is necessary to avoid reducing the performance of SSE code. Fixes: d34a460 ("crypto: sha256 - Optimized sha256 x86_64 routine using AVX2's RORX instructions") Signed-off-by: Eric Biggers <[email protected]> Acked-by: Tim Chen <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
ddstreet · Apr 12, 2024 · 57ce8a4 · 57ce8a4
1 parent 4ad096c
commit 57ce8a4
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/arch/x86/crypto/sha256-avx2-asm.S b/arch/x86/crypto/sha256-avx2-asm.S
@@ -716,6 +716,7 @@ SYM_TYPED_FUNC_START(sha256_transform_rorx)
 	popq	%r13
 	popq	%r12
 	popq	%rbx
+	vzeroupper
 	RET
 SYM_FUNC_END(sha256_transform_rorx)