diff options
| author |   Wanpeng Li <wanpeng.li@hotmail.com> | 2017-07-13 18:30:41 -0700 |
|---|---|---|
| committer |   Radim Krčmář <rkrcmar@redhat.com> | 2017-07-14 14:26:16 +0200 |
| commit | adfe20fb48785dd73af3bf91407196eb5403c8cf (patch) | |
| tree | fb89b189418b350f609c08203f7b5b24f7f193ce /arch/x86/kvm/x86.c | |
| parent | KVM: async_pf: Add L1 guest async_pf #PF vmexit handler (diff) | |
| download | linux-dev-adfe20fb48785dd73af3bf91407196eb5403c8cf.tar.xz linux-dev-adfe20fb48785dd73af3bf91407196eb5403c8cf.zip | |
KVM: async_pf: Force a nested vmexit if the injected #PF is async_pf
Add an nested_apf field to vcpu->arch.exception to identify an async page
fault, and constructs the expected vm-exit information fields. Force a
nested VM exit from nested_vmx_check_exception() if the injected #PF is
async page fault.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/x86.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index e149c92476f1..f3f10154c133 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -450,7 +450,12 @@ EXPORT_SYMBOL_GPL(kvm_complete_insn_gp); void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault) { ++vcpu->stat.pf_guest; - vcpu->arch.cr2 = fault->address; + vcpu->arch.exception.nested_apf = + is_guest_mode(vcpu) && fault->async_page_fault; + if (vcpu->arch.exception.nested_apf) + vcpu->arch.apf.nested_apf_token = fault->address; + else + vcpu->arch.cr2 = fault->address; kvm_queue_exception_e(vcpu, PF_VECTOR, fault->error_code); } EXPORT_SYMBOL_GPL(kvm_inject_page_fault); @@ -8582,6 +8587,7 @@ void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, fault.error_code = 0; fault.nested_page_fault = false; fault.address = work->arch.token; + fault.async_page_fault = true; kvm_inject_page_fault(vcpu, &fault); } } @@ -8604,6 +8610,7 @@ void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, fault.error_code = 0; fault.nested_page_fault = false; fault.address = work->arch.token; + fault.async_page_fault = true; kvm_inject_page_fault(vcpu, &fault); } vcpu->arch.apf.halted = false; |