On Thu, 2015-10-29 at 09:19 -0700, Tim Chen wrote:
> On Thu, 2015-10-29 at 03:03 +0100, Stephan Mueller wrote:
> > Am Mittwoch, 28. Oktober 2015, 14:19:29 schrieb Tim Chen:
> >
> > Hi Tim,
> >
> > >+
> > >+ /* check for dependent cpu features */
> > >+ if (!cpu_has_aes) {
> > >+ pr_err("aes_cbc_mb_mod_init: no aes support\n");
> > >+ err = -ENODEV;
> > >+ goto err1;
> > >+ }
> >
> > In your post 0/5, you say that this mechanism needs AVX2. In the existing
> > AESNI glue code I find
> >
> > #ifdef CONFIG_X86_64
> > #ifdef CONFIG_AS_AVX2
> > if (boot_cpu_has(X86_FEATURE_AVX2)) {
> >
> > ...
> >
> > Why would that CPU check not be needed here?
>
> Good catch. Will add check for avx2.
Actually since we are using only XMM registers and SSE instructions,
checking for SSE support will be sufficient.
Tim
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