[libvirt] xsave-related CPU features implementation

[Alexander Burluka]

On Fri, May 20, 2016 at 09:29:38AM +0200, Jiri Denemark wrote:
> On Thu, May 19, 2016 at 19:56:18 +0300, Alexander Burluka wrote:
> > Hello,
> > 
> > I would like to add support for the next CPU features which presents in
> > QEMU - xsaveopt, xsavec, xgetbv1, xsaves. These features were introduced
> > in QEMU commit 0bb0b2d2fe7f645ddaf1f0ff40ac669c9feb4aa1.
> > I was confused by comment in src/cpu/cpu_map.xml:
> > ...
> > <!-- We support only ecx 0x0 now as it's done by a workaround -->
> > ...
> > Is this comment is still actual? This feature set needs ecx 0x1.
> > I can see that it was a temporary solution in commit by Peter Krempa
> > 012f9b19ef3812884e207dc431571502de4cebce. Does these features addtion
> > require CPU detection improvement? Or can I simply put them into 
> > src/cpu/cpu_map.xml?
> 
> Yeah, the CPU detection code needs to be improved to support features
> which require more than just eax set when running CPUID instruction.
> 
> I'm currently working on adding more CPUID tests (and data) to libvirt
> and I'll take that as the opportunity to add support for these new
> features.
> 
> Jirka

Thank you, I will follow mailing list

-- 
Regards,
Alexander Burluka