On Tuesday 25 September 2007, Avi Kivity wrote:
> J. Mayer wrote:
> > On Tue, 2007-09-25 at 11:01 +0200, Avi Kivity wrote:
> >> Dan Kenigsberg wrote:
> >>> On Tue, Sep 25, 2007 at 03:28:24AM +0200, andrzej zaborowski wrote:
> >>>> Hi,
> >>>>
> >>>> On 24/09/2007, Dan Kenigsberg <[EMAIL PROTECTED]> wrote:
> >>>>> As with previous "Takes" of this patch, its purpose is to expose host
> >>>>> +{
> >>>>> + asm("cpuid"
> >>>>> + : "=a" (*ax),
> >>>>> + "=b" (*bx),
> >>>>> + "=c" (*cx),
> >>>>> + "=d" (*dx)
> >>>>> + : "a" (function));
> >>>>> +}
> >>>>
> Indeed for regular qemu this is useless. But it is useful for kqemu
> (for which there is support in mainline qemu), and for kvm (which we
> hope to merge one day).
And, as discussed before, it should be asking the hypervisor what features it
supports instead of trying to guess from the cpuid output.
Paul
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