Re: [Xen-devel] [PATCH 13/14] Nested Virtualization: p2m infrastructure

[Christoph Egger <Christoph.Egger@xxxxxxx>]

Hi Yang,

we are about trying to reproduce this problem and will keep you up-to-date on 
our findings.
Can you also give us more detailed information, i.e. does this happen
with hap only or also with shadow paging ?

The changeset 
http://xenbits.xensource.com/staging/xen-unstable.hg/rev/e7afe98afd43
touches generic p2m code. The EPT code definitely needs an update in
respect to get EPT-on-EPT with nested virtualization.
Until further analysis is done, I can not say, there is no bug in the p2m
changes and I can say as well that you might need Eddies EPT update patch
as this may contain the fix you need.

Christoph


On Monday 23 August 2010 02:50:52 Zhang, Yang Z wrote:
> Hi chris
> We find this patch will cause SR-IOV fail. Guest will vf assigned cannot
> get ip and show " do_IRQ: 0.177 No irq handler for vector (irq -1)" in xm
> dmesg. Can you take a look at this patch and help to fixed the regression?
> Thanks :)
>
> best regards
> yang
>
> > -----Original Message-----
> > From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
> > [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Christoph
> > Egger Sent: Thursday, August 05, 2010 11:05 PM
> > To: xen-devel@xxxxxxxxxxxxxxxxxxx
> > Subject: [Xen-devel] [PATCH 13/14] Nested Virtualization: p2m
> > infrastructure
> >
> >
> > Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx>
> >
> > --
> > ---to satisfy European Law for business letters:
> > Advanced Micro Devices GmbH
> > Einsteinring 24, 85609 Dornach b. Muenchen
> > Geschaeftsfuehrer: Alberto Bozzo, Andrew Bowd
> > Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen Registergericht
> > Muenchen, HRB Nr. 43632



-- 
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Alberto Bozzo, Andrew Bowd
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632


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