diff options
| -rw-r--r-- | arch/x86/kvm/x86.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 30492f0..a066876 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -181,16 +181,22 @@ void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long addr, ++vcpu->stat.pf_guest; if (vcpu->arch.exception.pending) { - if (vcpu->arch.exception.nr == PF_VECTOR) { - printk(KERN_DEBUG "kvm: inject_page_fault:" - " double fault 0x%lx\n", addr); - vcpu->arch.exception.nr = DF_VECTOR; - vcpu->arch.exception.error_code = 0; - } else if (vcpu->arch.exception.nr == DF_VECTOR) { + switch(vcpu->arch.exception.nr) { + case DF_VECTOR: /* triple fault -> shutdown */ set_bit(KVM_REQ_TRIPLE_FAULT, &vcpu->requests); + return; + case PF_VECTOR: + vcpu->arch.exception.nr = DF_VECTOR; + vcpu->arch.exception.error_code = 0; + return; + default: + /* replace previous exception with a new one in a hope + that instruction re-execution will regenerate lost + exception */ + vcpu->arch.exception.pending = false; + break; } - return; } vcpu->arch.cr2 = addr; kvm_queue_exception_e(vcpu, PF_VECTOR, error_code); |