Reviewed-by: Yan Zhao
On Fri, Mar 10, 2023 at 04:22:45PM -0800, Sean Christopherson wrote:
> Disallow moving memslots if the VM has external page-track users, i.e. if
> KVMGT is being used to expose a virtual GPU to the guest, as KVM doesn't
> correctly handle moving memory regions.
>
> Note,
On Wed, Mar 15, 2023 at 08:43:54AM -0700, Sean Christopherson wrote:
> > So, in theory, the new GFNs are not write tracked though the old ones are.
> >
> > Is that acceptable for the internal page-track user?
>
> It works because KVM zaps all SPTEs when a memslot is moved, i.e. the fact
> that
On Wed, Mar 15, 2023, Yan Zhao wrote:
> On Fri, Mar 10, 2023 at 04:22:45PM -0800, Sean Christopherson wrote:
> > Disallow moving memslots if the VM has external page-track users, i.e. if
> > KVMGT is being used to expose a virtual GPU to the guest, as KVM doesn't
> > correctly handle moving memory
On Fri, Mar 10, 2023 at 04:22:45PM -0800, Sean Christopherson wrote:
> Disallow moving memslots if the VM has external page-track users, i.e. if
> KVMGT is being used to expose a virtual GPU to the guest, as KVM doesn't
> correctly handle moving memory regions.
>
> Note, this is potential ABI
Disallow moving memslots if the VM has external page-track users, i.e. if
KVMGT is being used to expose a virtual GPU to the guest, as KVM doesn't
correctly handle moving memory regions.
Note, this is potential ABI breakage! E.g. userspace could move regions
that aren't shadowed by KVMGT without
