KVM: x86/mmu: Use SHADOW_NONPRESENT_VALUE for atomic zap in TDP MMU

Use SHADOW_NONPRESENT_VALUE when zapping TDP MMU SPTEs with mmu_lock held
for read, tdp_mmu_zap_spte_atomic() was simply missed during the initial
development.

Fixes: 7f01cab84928 ("KVM: x86/mmu: Allow non-zero value for non-present SPTE and removed SPTE")
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
[sean: write changelog]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Kai Huang <kai.huang@intel.com>
Message-ID: <20240518000430.1118488-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 1259dd63defc8e92ed2eb49e291db5a96d7623c9..36539c1b36cd632f5fb32a263cc3c68632b2f1c9 100644 (file)
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -626,7 +626,7 @@ static inline int tdp_mmu_zap_spte_atomic(struct kvm *kvm,
         * SPTEs.
         */
        handle_changed_spte(kvm, iter->as_id, iter->gfn, iter->old_spte,
-                           0, iter->level, true);
+                           SHADOW_NONPRESENT_VALUE, iter->level, true);
 
        return 0;
 }