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SubjectRe: [PATCH v4] kvm,x86: Exit to user space in case page fault error
On Tue, Oct 06, 2020 at 01:35:27PM -0400, Vivek Goyal wrote:
> On Tue, Oct 06, 2020 at 10:17:04AM -0700, Sean Christopherson wrote:
>
> [..]
> > > > Note, TDX doesn't allow injection exceptions, so reflecting a #PF back
> > > > into the guest is not an option.
> > >
> > > Not even #MC? So sad :-)
> >
> > Heh, #MC isn't allowed either, yet...
>
> If #MC is not allowd, logic related to hwpoison memory will not work
> as that seems to inject #MC.

Yep. Piggybacking #MC is undesirable for other reasons, e.g. adds a "hardware"
dependency for what is really a paravirt feature.

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