Re: [Xen-devel] Xen 4.3 development update RC2 imminent

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, May 23, 2013 at 12:31:57PM +0200, Fabio Fantoni wrote:
> >>>
> >>Hmm, for testing, can we use cpuid to mask out SSE,
> >>and then try qxl ?
> >
> >That had occurred to me -- Andrew / Jan, do you know which flag
> >might disable this particular instruction?
> >
> >I guess we could try just disabling all the SSE instructions.
> >
> >Fabio: Can you do the following:
> >* On your host, do "cat /proc/cpuinfo".  Under "flags" there will
> >be a big list.  Look for all of the ones that have "sse" in them.
> >
> >On my AMD box, that includes sse, sse2, ssse3, sse4_1, and sse4_2.
> >
> >* In your xl.cfg, add a cpuid with each of those flags disabled.
> >
> >On my box, it looks like this:
> >
> >cpuid="host,sse=0,sse2=0,ssse3=0,sse4_1=0,sse4_2=0"
> >
> >Then run your system with Anthony's patch and see if you still get
> >the crash.
> >
> > -George
> Thanks, I tried it. On windows domU I get a blu screen with "stop
> 5d" (even without qxl set) and on linux domU the domU crashes
> without showing errors on qemu log.
>

And you tried with 32bit windows/linux guest VM ? 

-- Pasi



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