Re: [Xen-devel] [PATCH v2 2/2] x86/hvm: add support for pcommit instruction

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Zhang, Haozhong
> Sent: Tuesday, January 05, 2016 3:15 PM
> 
> On 01/05/16 15:08, Tian, Kevin wrote:
> > > From: Zhang, Haozhong
> > > Sent: Wednesday, December 30, 2015 7:49 PM
> > >
> > > Pass PCOMMIT CPU feature into HMV domain. Currently, we do not intercept
> > > pcommit instruction for L1 guest, and allow L1 to intercept pcommit
> > > instruction for L2 guest.
> >
> > Could you elaborate why different policies are used for L1/L2? And better
> > add a comment in code (at least for vvmx) to describe the intention.
> >
> > Thanks
> > Kevin
> 
> The intention is that we completely expose pcommit (both the
> instruction and VMEXIT caused by pcommit) to L1.
> 
> Haozhong

My question is why pcommit can't not be directly in L2 w/o interception?

Thanks
Kevin


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel