1 files changed, 8 insertions, 9 deletions

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index c2fd2b96144..4b55f462e2b 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -399,6 +399,14 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr,
         page = gfn_to_page(vcpu->kvm, walker.gfn);
         up_read(&current->mm->mmap_sem);
 
+        /* mmio */
+        if (is_error_page(page)) {
+                pgprintk("gfn %x is mmio\n", walker.gfn);
+                kvm_release_page_clean(page);
+                up_read(&vcpu->kvm->slots_lock);
+                return 1;
+        }
+
         spin_lock(&vcpu->kvm->mmu_lock);
         kvm_mmu_free_some_pages(vcpu);
         shadow_pte = FNAME(fetch)(vcpu, addr, &walker, user_fault, write_fault,
@@ -409,15 +417,6 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr,
         if (!write_pt)
                 vcpu->arch.last_pt_write_count = 0; /* reset fork detector */
 
-        /*
-         * mmio: emulate if accessible, otherwise its a guest fault.
-         */
-        if (shadow_pte && is_io_pte(*shadow_pte)) {
-                spin_unlock(&vcpu->kvm->mmu_lock);
-                up_read(&vcpu->kvm->slots_lock);
-                return 1;
-        }
-
         ++vcpu->stat.pf_fixed;
         kvm_mmu_audit(vcpu, "post page fault (fixed)");
         spin_unlock(&vcpu->kvm->mmu_lock);