Il 05/06/2014 18:24, Alexander Graf ha scritto:
On 05.06.14 18:12, Eduardo Habkost wrote:
This implements GET_SUPPORTED_CPUID support using an explicit option
for it:
"allow-emulation". We don't want any emulated feature to be enabled by
accident,
so they will be enabled only if the user explicitly wants to allow them.
So is this an all-or-nothing approach? I would really prefer to override
individual bits.
You can still disable them with "cpu foo,-movbe,allow-emulation".
Also, I don't think the line "emulated" is the right one to draw. We
"emulate" SVM or VMX too, but still enable them by default as soon as we
think they're ready enough.
Well, I disagreed with the whole KVM_GET_EMULATED_CPUID concept for
MOVBE too for example. It seemed overengineered to me, sooner or later
we might graduate MOVBE out of KVM_GET_EMULATED_CPUID as well.
However, for MONITOR/MWAIT it makes some sense.
Paolo
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