Re: [PATCH] crypto: crc32c-vpmsum - Convert to CPU feature based module autoloading

Anton Blanchard [off-list ref] writes:

Hi Michael,

quoted

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.

quoted

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