diff options
| author | Taehee Yoo <ap420073@gmail.com> | 2023-02-10 18:15:41 +0000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-02-14 13:39:33 +0800 |
| commit | 8b84475318641c2b89320859332544cf187e1cbd (patch) | |
| tree | 89ade0f75b86903cdcd6c2617cbb86bf2caa8cc7 /Documentation/bpf/index.rst | |
| parent | eb33108858b64ebc0f79a582123731c2585ae63b (diff) | |
| download | lwn-8b84475318641c2b89320859332544cf187e1cbd.tar.gz lwn-8b84475318641c2b89320859332544cf187e1cbd.zip | |
crypto: x86/aria-avx - Do not use avx2 instructions
vpbroadcastb and vpbroadcastd are not AVX instructions.
But the aria-avx assembly code contains these instructions.
So, kernel panic will occur if the aria-avx works on AVX2 unsupported
CPU.
vbroadcastss, and vpshufb are used to avoid using vpbroadcastb in it.
Unfortunately, this change reduces performance by about 5%.
Also, vpbroadcastd is simply replaced by vmovdqa in it.
Fixes: ba3579e6e45c ("crypto: aria-avx - add AES-NI/AVX/x86_64/GFNI assembler implementation of aria cipher")
Reported-by: Herbert Xu <herbert@gondor.apana.org.au>
Reported-by: Erhard F. <erhard_f@mailbox.org>
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'Documentation/bpf/index.rst')
0 files changed, 0 insertions, 0 deletions