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xen-devel
Re: [Xen-devel] [PATCH 2/2] hvm: allow pass-through of new CPUID feature
Ian Jackson wrote:
Andre Przywara writes ("[Xen-devel] [PATCH 2/2] hvm: allow pass-through of new CPUID
features"):
there are some new CPUID features that are safe for guests to see, as
they don't require OS awareness (FPU/ALU related instructions only).
Among features for new AMD CPUs there is also the PCLMULQDQ bit, which
Intel CPU have already for quite a while.
This would seem to be a new feature.
I agree to some point, although (at least in respect to PCLMULQDQ) I'd
consider this more as "forgotten enablement".
> We are currently in feature freeze.
Can you make a justification for a freeze exception ?
If you can make me believe that it does not take another year until this
shows up in an official release, then I am totally fine with skipping 4.1.0.
What is the policy regarding the 4.1.x releases? Have features like
those a chance of being applied?
Regards,
Andre.
--
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
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