Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
virt/kvm/kvm_main.c | 20 +++++++++++++++-----
1 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 92f5c98..c10d117 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -341,6 +341,20 @@ static const struct mmu_notifier_ops kvm_mmu_notifier_ops = {
.change_pte = kvm_mmu_notifier_change_pte,
.release = kvm_mmu_notifier_release,
};
+
+static int kvm_init_mmu_notifier(struct kvm *kvm)
+{
+ kvm->mmu_notifier.ops = &kvm_mmu_notifier_ops;
+ return mmu_notifier_register(&kvm->mmu_notifier, current->mm);
+}
+
+#else /* !(CONFIG_MMU_NOTIFIER && KVM_ARCH_WANT_MMU_NOTIFIER) */
+
+static int kvm_init_mmu_notifier(struct kvm *kvm)
+{
+ return 0;
+}
+
#endif /* CONFIG_MMU_NOTIFIER && KVM_ARCH_WANT_MMU_NOTIFIER */
static struct kvm *kvm_create_vm(void)
@@ -373,11 +387,7 @@ static struct kvm *kvm_create_vm(void)
(struct kvm_coalesced_mmio_ring *)page_address(page);
#endif
-#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
- kvm->mmu_notifier.ops = &kvm_mmu_notifier_ops;
- r = mmu_notifier_register(&kvm->mmu_notifier, current->mm);
-#endif
-
+ r = kvm_init_mmu_notifier(kvm);
if (r) {
#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
put_page(page);
--
1.6.5.3
--
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