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

From: Sean Christopherson
Date: Mon Oct 30 2023 - 18:07:36 EST


On Mon, Oct 30, 2023, Paolo Bonzini wrote:
> On 10/27/23 20:21, Sean Christopherson wrote:
> > @@ -635,6 +635,13 @@ static __always_inline kvm_mn_ret_t __kvm_handle_hva_range(struct kvm *kvm,
> > * the second or later invocation of the handler).
> > */
> > gfn_range.arg = range->arg;
> > +
> > + /*
> > + * HVA-based notifications aren't relevant to private
> > + * mappings as they don't have a userspace mapping.
>
> It's confusing who "they" is. Maybe
>
> * HVA-based notifications provide a userspace address,
> * and as such are only relevant for shared mappings.

Works for me.