Anton Blanchard <an...@samba.org> writes:

> Hi Michael,
>
>> Is VEC_CRYPTO the right feature?
>> 
>> That's new power8 crypto stuff.
>
> The vpmsum* instructions are part of the same pipeline as the vcipher*
> instructions, introduced in POWER8.

OK.

>> I thought this only used VMX? (but I haven't looked closely)
>
> Yes, vcipher* and vpmsum* are VMX instructions.

Right. The confusion is that we have PPC_FEATURE_HAS_ALTIVEC, but that
doesn't mean we have *these* VMX instructions.

This is actually an arch/powerpc patch, so I'll merge it unless Herbert
objects.

cheers
--
To unsubscribe from this list: send the line "unsubscribe linux-crypto" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to