Re: [Xen-devel] Crash of guest with nested vmx with Unknown nested vmexit reason 80000021.

["Li, Liang Z" <liang.z.li@xxxxxxxxx>]

Hi All,

       I found a way to preproduce the bug very easy by using the 
apic->send_IPI_all(NMI_VECTOR)
 in L2 in a kernel module to trigger MNI. And I have verified that the bug can 
be fixed as Jan's
 suggestion, ' the second half of vmx_idtv_reinject() needs to be done without 
regard to
 nestedhvm_vcpu_in_guestmode(v)', I will send a patch later.

Liang

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxx] On Behalf Of Jeroen Groenewegen van der Weyden
> Sent: Wednesday, March 04, 2015 6:24 PM
> To: Jan Beulich
> Cc: Tian, Kevin; George Dunlap; Dong, Eddie; xen-devel@xxxxxxxxxxxxx;
> Nakajima, Jun; Zhang, Yang Z
> Subject: Re: [Xen-devel] Crash of guest with nested vmx with Unknown
> nested vmexit reason 80000021.
> 
> Hi Jan,
> 
> I am sorry, But  had the impression you were somehow the owner of these
> feature. My mistake.
> I understand the feature is in preview, But are you feeling intense presure
> when I ask for some status every 2 months? :-))
> 
> 
> BR,
> Jeroen
> 
> Jan Beulich schreef op 27-2-2015 om 09:08:
> >>>> On 26.02.15 at 19:56, <groen692@xxxxxxxxx> wrote:
> >> Anything planned concerning this?
> > Thanks for asking, but to be honest I don't understand why you're (not
> > the first time iirc) pinging me rather than the VMX maintainers who
> > had promised to do that work. All I can say is that I'm being told
> > it's still on their todo list, but no-one has found time yet. And
> > please remember that all of nested virt is still marked preview, i.e.
> > not fully supported - for reasons like the bug here.
> >
> > Jan
> >
> >> Jan Beulich schreef op 9-12-2014 om 10:17:
> >>>>>> On 09.12.14 at 10:09, <groen692@xxxxxxxxx> wrote:
> >>>> Did anyone find the time yet? I'm still more then willing testing
> >>>> any patches.
> >>> Just yesterday we were told by Intel that they still can't foresee
> >>> when they will find time.
> >>>
> >>> Jan
> >>>
> >>>
> >
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-devel
> >
> 
> 
> _______________________________________________
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> Xen-devel@xxxxxxxxxxxxx
> http://lists.xen.org/xen-devel

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