Re: [PATCH] kvm_para_available() should check hypervisor bit before accessing hypervisor cpuid leaf.

[Gleb Natapov <gleb@xxxxxxxxxx>]

On Tue, May 01, 2012 at 03:50:44PM +0300, Avi Kivity wrote:
> On 04/30/2012 02:45 PM, Gleb Natapov wrote:
> > This couid range does not exist on real HW and Intel spec says that
> > "Information returned for highest basic information leaf" will be
> > returned. Not very well defined. 
> >
> 
> Correct in principle.  But IIRC some old qemus supported the kvm cpuid
> range without setting the hypervisor bit.
> 
How old?

--
			Gleb.
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