Re: [PATCH 05/22] kvm: mmu: Add functions to handle changed TDP SPTEs

From: Paolo Bonzini
Date: Mon Sep 28 2020 - 13:23:56 EST


On 26/09/20 02:39, Paolo Bonzini wrote:
>> + handle_changed_spte(kvm, as_id,
>> + gfn + (i * KVM_PAGES_PER_HPAGE(level - 1)),
>> + old_child_spte, 0, level - 1);
>> + }
> Is it worth returning a "flush" value to the caller, to avoid multiple
> kvm_flush_remote_tlbs_with_address when e.g. zapping a 3rd-level PTE?

Nevermind, this is not possible since you are freeing the page
immediately after kvm_flush_remote_tlbs_with_address.

Paolo