1 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index f385a4cf4bfd..0d094da49541 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -4387,8 +4387,10 @@ void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm)
          * The max value is MMIO_MAX_GEN - 1 since it is not called
          * when mark memslot invalid.
          */
-        if (unlikely(kvm_current_mmio_generation(kvm) >= (MMIO_MAX_GEN - 1)))
+        if (unlikely(kvm_current_mmio_generation(kvm) >= (MMIO_MAX_GEN - 1))) {
+                printk_ratelimited(KERN_INFO "kvm: zapping shadow pages for mmio generation wraparound\n");
                 kvm_mmu_invalidate_zap_all_pages(kvm);
+        }
 }
 
 static int mmu_shrink(struct shrinker *shrink, struct shrink_control *sc)