Messages in this thread | | | Date | Thu, 26 Jan 2017 16:53:07 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH 5/7] x86/fpu: Change fpu->fpregs_active users to fpu->fpstate_active |
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* Rik van Riel <riel@redhat.com> wrote:
> Let me go totally reimplement this whole project in a different way...
Note that I can still be convinced about complicating the FPU state machine as well if that ends up being the best approach for KVM - but it appears to me (from a very superficial look) that turning vCPU threads into no-FPU kthreads or representing the guest FPU state directly with the host FPU context would be even more beneficial, from the simplicity and KVM performance POV?
> At least I found some good FPU bugs and cleanups along the way.
Absolutely, and your efforts are much appreciated! This ptrace state handling madness that bit you on SkyLake was something I missed entirely.
Thanks,
Ingo
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