diff options
| -rw-r--r-- | arch/x86/kvm/mmu.c | 5 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 10 |
2 files changed, 6 insertions, 9 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 9e9285a..3a9493a 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -4390,11 +4390,8 @@ void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm) /* * The very rare case: if the generation-number is round, * zap all shadow pages. - * - * 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)) { printk_ratelimited(KERN_INFO "kvm: zapping shadow pages for mmio generation wraparound\n"); kvm_mmu_invalidate_zap_all_pages(kvm); } diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 9dd8799..7bea976 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7021,6 +7021,11 @@ out_free: void kvm_arch_memslots_updated(struct kvm *kvm) { + /* + * memslots->generation has been incremented. + * mmio generation may have reached its maximum value. + */ + kvm_mmu_invalidate_mmio_sptes(kvm); } int kvm_arch_prepare_memory_region(struct kvm *kvm, @@ -7083,11 +7088,6 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, */ if ((change != KVM_MR_DELETE) && (mem->flags & KVM_MEM_LOG_DIRTY_PAGES)) kvm_mmu_slot_remove_write_access(kvm, mem->slot); - /* - * If memory slot is created, or moved, we need to clear all - * mmio sptes. - */ - kvm_mmu_invalidate_mmio_sptes(kvm); } void kvm_arch_flush_shadow_all(struct kvm *kvm) |