Re: [PATCH] lib/crypto: x86/blake2s: Drop redundant checks for AVX and AVX512F

[Eric Biggers <ebiggers@kernel.org>]

On Wed, Nov 11, 2026 at 12:14:36PM -0800, Eric Biggers wrote:
> X86_FEATURE_AVX2 implies X86_FEATURE_AVX.  Similarly,
> X86_FEATURE_AVX512VL implies X86_FEATURE_AVX512F (and X86_FEATURE_AVX).
> 
> Simplify blake2s_mod_init_arch() accordingly.  Also nest these checks
> under the block that sets the static key for blake2s_use_ssse3,
> mirroring the code that uses these static keys.
> 
> (Note: as usual, arch/x86/kernel/cpu/cpuid-deps.c is non-enforcing: if a
> dependency isn't met, it warns and doesn't prevent booting.  However,
> that case doesn't occur in real CPUs and is unsupported.)
> 
> Signed-off-by: Eric Biggers <ebiggers@kernel.org>
> ---
>  lib/crypto/x86/blake2s.h | 12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git/log/?h=libcrypto-next

- Eric