Re: [PATCH v13 12/35] KVM: Prepare for handling only shared mappings in mmu_notifier events

[Paolo Bonzini]

On 11/2/23 06:59, Binbin Wu wrote:
> > Add flags to "struct kvm_gfn_range" to let notifier events target
> > only shared and only private mappings, and write up the existing
> > mmu_notifier events to be shared-only (private memory is never
> > associated with a userspace virtual address, i.e. can't be reached
> > via mmu_notifiers).
> >
> > Add two flags so that KVM can handle the three possibilities
> > (shared, private, and shared+private) without needing something
> > like a tri-state enum.
>
> I see the two flags are set/cleared in __kvm_handle_hva_range() in
> this patch and kvm_handle_gfn_range() from the later patch 13/35, but
> I didn't see they are used/read in this patch series if I didn't miss
> anything.  How are they supposed to be used in KVM?

They are going to be used by SNP/TDX patches.

Paolo