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-rw-r--r--virt/kvm/kvm_main.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index b299c0366320..5ce91254a793 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -461,12 +461,17 @@ static void kvm_mmu_notifier_change_pte(struct mmu_notifier *mn,
trace_kvm_set_spte_hva(address);
+ /*
+ * .change_pte() must be surrounded by .invalidate_range_{start,end}(),
+ * and so always runs with an elevated notifier count. This obviates
+ * the need to bump the sequence count.
+ */
+ WARN_ON_ONCE(!kvm->mmu_notifier_count);
+
idx = srcu_read_lock(&kvm->srcu);
KVM_MMU_LOCK(kvm);
- kvm->mmu_notifier_seq++;
-
if (kvm_set_spte_hva(kvm, address, pte))
kvm_flush_remote_tlbs(kvm);