Re: [PATCH 00/12] x86/crypto: Fix RBP usage in several crypto .S files

[Ingo Molnar]

* Eric Biggers <ebiggers3@xxxxxxxxx> wrote:

> On Thu, Sep 07, 2017 at 09:15:34AM +0200, Ingo Molnar wrote:
> > 
> > * Eric Biggers <ebiggers3@xxxxxxxxx> wrote:
> > 
> > > Thanks for fixing these!  I don't have time to review these in detail, but I ran
> > > the crypto self-tests on the affected algorithms, and they all pass.  I also
> > > benchmarked them before and after; the only noticable performance difference was
> > > that sha256-avx2 and sha512-avx2 became a few percent slower.  I don't suppose
> > > there is a way around that?  Otherwise it's probably not a big deal.
> > 
> > Which CPU model did you use for the test?
> > 
> > Thanks,
> > 
> > 	Ingo
> 
> This was on Haswell, "Intel(R) Xeon(R) CPU E5-1650 v3 @ 3.50GHz".

Any chance to test this with the latest microarchitecture - any Skylake derivative 
Intel CPU you have access to?

Thanks,

	Ingo