From ac53977611428db3bc0b4ac0225e19c3e08ae50b Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Mon, 31 Aug 2026 14:17:15 -0700 Subject: [PATCH] crypto: x86/aria - add missing vzeroupper in AVX2 code Since the AVX2 optimized ARIA code uses YMM 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: 37d8d3ae7a58 ("crypto: x86/aria - implement aria-avx2") Cc: stable@vger.kernel.org Cc: Taehee Yoo Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu --- arch/x86/crypto/aria-aesni-avx2-asm_64.S | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/crypto/aria-aesni-avx2-asm_64.S b/arch/x86/crypto/aria-aesni-avx2-asm_64.S index ed53d4f46bd7..fda8cb8a99a8 100644 --- a/arch/x86/crypto/aria-aesni-avx2-asm_64.S +++ b/arch/x86/crypto/aria-aesni-avx2-asm_64.S @@ -982,6 +982,7 @@ SYM_TYPED_FUNC_START(aria_aesni_avx2_encrypt_32way) %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14, %ymm15, %rax); + vzeroupper; FRAME_END RET; SYM_FUNC_END(aria_aesni_avx2_encrypt_32way) @@ -1007,6 +1008,7 @@ SYM_TYPED_FUNC_START(aria_aesni_avx2_decrypt_32way) %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14, %ymm15, %rax); + vzeroupper; FRAME_END RET; SYM_FUNC_END(aria_aesni_avx2_decrypt_32way) @@ -1209,6 +1211,7 @@ SYM_TYPED_FUNC_START(aria_aesni_avx2_ctr_crypt_32way) %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14, %ymm15, %r10); + vzeroupper; FRAME_END RET; SYM_FUNC_END(aria_aesni_avx2_ctr_crypt_32way) @@ -1359,6 +1362,7 @@ SYM_TYPED_FUNC_START(aria_aesni_avx2_gfni_encrypt_32way) %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14, %ymm15, %rax); + vzeroupper; FRAME_END RET; SYM_FUNC_END(aria_aesni_avx2_gfni_encrypt_32way) @@ -1384,6 +1388,7 @@ SYM_TYPED_FUNC_START(aria_aesni_avx2_gfni_decrypt_32way) %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14, %ymm15, %rax); + vzeroupper; FRAME_END RET; SYM_FUNC_END(aria_aesni_avx2_gfni_decrypt_32way) @@ -1428,6 +1433,7 @@ SYM_TYPED_FUNC_START(aria_aesni_avx2_gfni_ctr_crypt_32way) %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14, %ymm15, %r10); + vzeroupper; FRAME_END RET; SYM_FUNC_END(aria_aesni_avx2_gfni_ctr_crypt_32way)