diff options
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 59907c9a9d05..59b95b1a04dc 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -722,6 +722,12 @@ unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu) } EXPORT_SYMBOL_GPL(kvm_get_cr8); +static void kvm_update_dr6(struct kvm_vcpu *vcpu) +{ + if (!(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)) + kvm_x86_ops->set_dr6(vcpu, vcpu->arch.dr6); +} + static void kvm_update_dr7(struct kvm_vcpu *vcpu) { unsigned long dr7; @@ -750,6 +756,7 @@ static int __kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val) if (val & 0xffffffff00000000ULL) return -1; /* #GP */ vcpu->arch.dr6 = (val & DR6_VOLATILE) | DR6_FIXED_1; + kvm_update_dr6(vcpu); break; case 5: if (kvm_read_cr4_bits(vcpu, X86_CR4_DE)) @@ -791,7 +798,10 @@ static int _kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val) return 1; /* fall through */ case 6: - *val = vcpu->arch.dr6; + if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) + *val = vcpu->arch.dr6; + else + *val = kvm_x86_ops->get_dr6(vcpu); break; case 5: if (kvm_read_cr4_bits(vcpu, X86_CR4_DE)) @@ -2960,8 +2970,11 @@ static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu, static void kvm_vcpu_ioctl_x86_get_debugregs(struct kvm_vcpu *vcpu, struct kvm_debugregs *dbgregs) { + unsigned long val; + memcpy(dbgregs->db, vcpu->arch.db, sizeof(vcpu->arch.db)); - dbgregs->dr6 = vcpu->arch.dr6; + _kvm_get_dr(vcpu, 6, &val); + dbgregs->dr6 = val; dbgregs->dr7 = vcpu->arch.dr7; dbgregs->flags = 0; memset(&dbgregs->reserved, 0, sizeof(dbgregs->reserved)); @@ -2975,6 +2988,7 @@ static int kvm_vcpu_ioctl_x86_set_debugregs(struct kvm_vcpu *vcpu, memcpy(vcpu->arch.db, dbgregs->db, sizeof(vcpu->arch.db)); vcpu->arch.dr6 = dbgregs->dr6; + kvm_update_dr6(vcpu); vcpu->arch.dr7 = dbgregs->dr7; kvm_update_dr7(vcpu); @@ -6749,6 +6763,7 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu) memset(vcpu->arch.db, 0, sizeof(vcpu->arch.db)); vcpu->arch.dr6 = DR6_FIXED_1; + kvm_update_dr6(vcpu); vcpu->arch.dr7 = DR7_FIXED_1; kvm_update_dr7(vcpu); |