diff options
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 0c7efb1de29d..91f4f5288150 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -3305,21 +3305,17 @@ static int nested_vmx_check_exception(struct kvm_vcpu *vcpu, unsigned long *exit *exit_qual = has_payload ? payload : vcpu->arch.cr2; return 1; } - } else { - /* - * FIXME: we must not write DR6 when L1 intercepts an - * L2 #DB exception. - */ - if (vmcs12->exception_bitmap & (1u << nr)) { - if (nr == DB_VECTOR) { - *exit_qual = vcpu->arch.dr6; - *exit_qual &= ~(DR6_FIXED_1 | DR6_BT); - *exit_qual ^= DR6_RTM; - } else { - *exit_qual = 0; + } else if (vmcs12->exception_bitmap & (1u << nr)) { + if (nr == DB_VECTOR) { + if (!has_payload) { + payload = vcpu->arch.dr6; + payload &= ~(DR6_FIXED_1 | DR6_BT); + payload ^= DR6_RTM; } - return 1; - } + *exit_qual = payload; + } else + *exit_qual = 0; + return 1; } return 0; |