Re: [Xen-devel] [PATCH] svm: Avoid VINTR injection during NMI shadow

[Wei Wang2 <wei.wang2@xxxxxxx>]

Totally agree,  you are are right only NMI injection should be avoid.
I have tested that the new condition works well. Thanks.
Wei

On Friday 07 May 2010 18:56:32 Keir Fraser wrote:
> I think the if statement should be:
>  if ((vmcb->general1_intercepts & GENERAL1_INTERCEPT_IRET) &&
>      (intack.source == hvm_intsrc_nmi))
>      return;
>
> Which I think deals properly and specifically with this hang problem.
>
> What do you think?
>
>  -- Keir
>
> On 07/05/2010 15:41, "Wei Wang2" <wei.wang2@xxxxxxx> wrote:
> > Hi,
> > I had observed that if xen injects and intercepts VINTR during NMI
> > shadow, and if the xen injects NMI into guest at a very hight frequency,
> > guest vcpu will hang. Attached patch avoids VINTR injection when guest is
> > handling a NMI.
> >
> > Thanks,
> >
> > Wei
> > Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>
> > Reviewed-by: Wei Huang<wei.huang2@xxxxxxx>
> > --
> > Legal Information:
> > Advanced Micro Devices GmbH
> > Karl-Hammerschmidt-Str. 34
> > 85609 Dornach b. München
> >
> > Geschäftsführer: Andrew Bowd, Thomas M. McCoy, Giuliano Meroni
> > Sitz: Dornach, Gemeinde Aschheim, Landkreis München
> > Registergericht München, HRB Nr. 43632




_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel