Re: [PATCH 05/21] KVM: VMX: Teach EPT violation helper about private mem

[Edgecombe, Rick P]

On Wed, 2024-09-11 at 16:52 +0800, Chao Gao wrote:
> > +       /*
> > +        * Don't rely on GFN's attribute tracking xarray to prevent EPT
> > violation
> > +        * loops.
> > +        */
> 
> The comment seems a bit odd to me. We cannot use the gfn attribute from the
> attribute xarray simply because here we need to determine if *this access* is
> to private memory, which may not match the gfn attribute. Even if there are
> other ways to prevent an infinite EPT violation loop, we still need to check
> the shared bit in the faulting GPA.

Yea this comment is not super informative. We can probably just drop it.