Re: AES leaks, cgd ciphers, and vector units in the kernel

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

> Date: Thu, 18 Jun 2020 09:37:36 -0700
> From: Brian Buhrow <buhrow%nfbcal.org@localhost>
> 
> 	hello.  I have what may be a silly question.  Does this change mean
> that I386 users won't have AES capabilities in the kernel at all going
> forward?  (I gather that's true for architectures like Sparc, but I'm
> assuming the AES code we did have didn't run very well on Sparc anyway.)
> However, it seems we still have a number of I386 users and I'm wondering
> where this leaves them?

No functionality is lost: there was, and there remains, a software
implementation of AES that can be used in cgd, ipsec, /dev/crypto with
swcrypto, &c., even if the CPU doesn't have AES instructions that we
can take advantage of.