diff options
Diffstat (limited to 'arch/x86/kvm/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 17 |
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(¤t->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); |