[PATCH 5/6] crypto: x86/aria - add missing vzeroupper in AVX-512 code

[Eric Biggers <ebiggers@kernel.org>]

Since the AVX-512 optimized ARIA code uses ZMM registers, execute
vzeroupper before returning from it.  This is needed to avoid degrading
the performance of any later SSE code that may happen to be executed.

Fixes: c970d42001f2 ("crypto: x86/aria - implement aria-avx512")
Cc: stable@vger.kernel.org
Cc: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
---
 arch/x86/crypto/aria-gfni-avx512-asm_64.S | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/crypto/aria-gfni-avx512-asm_64.S b/arch/x86/crypto/aria-gfni-avx512-asm_64.S
index 860887e5d02e..ca83eb126e06 100644
--- a/arch/x86/crypto/aria-gfni-avx512-asm_64.S
+++ b/arch/x86/crypto/aria-gfni-avx512-asm_64.S
@@ -800,6 +800,7 @@ SYM_TYPED_FUNC_START(aria_gfni_avx512_encrypt_64way)
 		     %zmm9, %zmm8, %zmm11, %zmm10, %zmm12, %zmm13, %zmm14,
 		     %zmm15, %rax);
 
+	vzeroupper;
 	FRAME_END
 	RET;
 SYM_FUNC_END(aria_gfni_avx512_encrypt_64way)
@@ -825,6 +826,7 @@ SYM_TYPED_FUNC_START(aria_gfni_avx512_decrypt_64way)
 		     %zmm9, %zmm8, %zmm11, %zmm10, %zmm12, %zmm13, %zmm14,
 		     %zmm15, %rax);
 
+	vzeroupper;
 	FRAME_END
 	RET;
 SYM_FUNC_END(aria_gfni_avx512_decrypt_64way)
@@ -966,6 +968,7 @@ SYM_TYPED_FUNC_START(aria_gfni_avx512_ctr_crypt_64way)
 		     %zmm9, %zmm8, %zmm11, %zmm10, %zmm12, %zmm13, %zmm14,
 		     %zmm15, %r10);
 
+	vzeroupper;
 	FRAME_END
 	RET;
 SYM_FUNC_END(aria_gfni_avx512_ctr_crypt_64way)
-- 
2.55.0