Re: [PATCH 0/2] KVM: x86: disable MPX if host did not enable MPX XSAVE features

From: Ingo Molnar
Date: Thu Mar 10 2016 - 12:35:45 EST

* Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:

> > Now, more and more features depend on eger xsave, e.g, fpu, mpx and
> > protection-key, maybe it is the time to rename eager-fpu to eager-xsave?
> Yeah, that could be possible. You can propose it to Ingo Molnar (CCed).
> If you change it in the general purpose kernel code, KVM will of course follow
> suit.

So we have this queued up for v4.6:

58122bf1d856 x86/fpu: Default eagerfpu=on on all CPUs

and if all goes fine with that then the plan for v4.7 is to remove the lazy FPU
restore code altogether.