Re: [Qemu-devel] [PATCH STABLE 0/3] Backport kvm cpuid feature trimming to stable

[Glauber Costa]

On Tue, May 19, 2009 at 07:18:13PM +0300, Avi Kivity wrote:
> (restored cc list)
> 
> Glauber Costa wrote:
> >On Tue, May 19, 2009 at 2:02 AM, Avi Kivity <address@hidden> wrote:
> >  
> >>Glauber Costa wrote:
> >>    
> >>>subject self explanatory
> >>>
> >>>      
> >>Right, so you have free space here to provide the motivation for the
> >>backport.  It's a large change and it isn't immediately obvious that it's
> >>stable branch material.
> >>
> >>    
> >
> >This does not introduce any new features.
> >Users expects the guest not to have any cpuid features that the host
> >cannot honnor. There has been multiple bug reports regarding this in
> >the past of Fedora users. I imagine other users have seen it too.
> >  
> 
> If it hits users then it's obviously important.  Note though that Mark 
> found some bugs there, so we need to either backport Mark's patches or 
> look for a simpler workaround.
I talked to mark , and I plan on backporting everything.