diff options
| author | Sean Christopherson <seanjc@google.com> | 2021-03-02 20:45:14 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-03-15 11:43:15 +0300 |
| commit | cb6a32c2b8777ad31a02e585584d869251a790e3 (patch) | |
| tree | ae3bf1dec3a2219aa8068cc0aaf733fbe35c1736 /arch/x86/kvm/lapic.c | |
| parent | 63129754178c5514f04bf6bdb891e33dfe58e58d (diff) | |
| download | linux-cb6a32c2b8777ad31a02e585584d869251a790e3.tar.xz | |
KVM: x86: Handle triple fault in L2 without killing L1
Synthesize a nested VM-Exit if L2 triggers an emulated triple fault
instead of exiting to userspace, which likely will kill L1. Any flow
that does KVM_REQ_TRIPLE_FAULT is suspect, but the most common scenario
for L2 killing L1 is if L0 (KVM) intercepts a contributory exception that
is _not_intercepted by L1. E.g. if KVM is intercepting #GPs for the
VMware backdoor, a #GP that occurs in L2 while vectoring an injected #DF
will cause KVM to emulate triple fault.
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Jim Mattson <jmattson@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210302174515.2812275-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/lapic.c')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index cc369b9ad8f1..0050f39e90d9 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -2869,7 +2869,7 @@ void kvm_apic_accept_events(struct kvm_vcpu *vcpu) return; if (is_guest_mode(vcpu)) { - r = kvm_x86_ops.nested_ops->check_events(vcpu); + r = kvm_check_nested_events(vcpu); if (r < 0) return; /* |