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crypto: camellia_aesni_avx - Fix CPU feature checks 

We need to explicitly check the AVX and AES CPU features, as we can't
infer them from the related XSAVE feature flags.  For example, the
Core i3 2310M passes the XSAVE feature test but does not implement
AES-NI.

Reported-and-tested-by: Stéphane Glondu <glondu@debian.org>
References: https://bugs.debian.org/800934
Fixes: ce4f5f9b65 ("x86/fpu, crypto x86/camellia_aesni_avx: Simplify...")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable <stable@vger.kernel.org> # 4.2
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ben Hutchings 2015-10-06 12:31:33 +01:00 committed by Herbert Xu
parent a66d7f724a
commit 92b279070d
1 changed files with 5 additions and 0 deletions
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5
arch/x86/crypto/camellia_aesni_avx_glue.c
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@ -554,6 +554,11 @@ static int __init camellia_aesni_init(void)
{
const char *feature_name;
if (!cpu_has_avx || !cpu_has_aes || !cpu_has_osxsave) {
pr_info("AVX or AES-NI instructions are not detected.\n");
return -ENODEV;
}
if (!cpu_has_xfeatures(XSTATE_SSE | XSTATE_YMM, &feature_name)) {
pr_info("CPU feature '%s' is not supported.\n", feature_name);
return -ENODEV;