Re: [Xen-devel] One question about the hypercall to translate gfn to mfn.

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

> From: Tian, Kevin
> Sent: Friday, December 12, 2014 2:30 PM
> >
> > Conclusion
> > ----------
> >
> > That's enough rambling from me -- time to come back down to earth.
> > While I think it's useful to think about all these things, we don't
> > want to get carried away. :)  And as I said, for some things we can
> > decide to trust XenGT to provide them, as long as we're clear about
> > what that means.
> >
> > I think that a reasonable minimum standard to expect is to enforce
> > levels 0 and 1 in Xen, and trust XenGT for levels 2 and 3.  And I
> > think we can do that without needing any huge engineering effort;
> > as I said, I think that's covered in my earlier reply.
> >
> 
> I agree the conclusion that "minimum standard to expect is to enforce
> levels 0 and 1 in Xen, and trust XenGT for levels 2 and 3", except the
> concern whether PVH Dom0 is a hard requirement or not. Having
> said that, I'm happy to discuss technical detail in another thread on
> how to support PVH Dom0.
> 

So after going through another mail, now I agree both level 0/1 can't
be enforced. :-)

Thanks
Kevin

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