KVM: PPC: BOOKE: Add one reg interface for DBSR

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

arch/powerpc/include/uapi/asm/kvm.h

@@ -557,6 +557,7 @@ struct kvm_get_htab_header {
 #define KVM_REG_PPC_DABRX	(KVM_REG_PPC | KVM_REG_SIZE_U32 | 0xb8)
 #define KVM_REG_PPC_WORT	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xb9)
 #define KVM_REG_PPC_SPRG9	(KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xba)
+#define KVM_REG_PPC_DBSR	(KVM_REG_PPC | KVM_REG_SIZE_U32 | 0xbb)
 
 /* Transactional Memory checkpointed state:
  * This is all GPRs, all VSX regs and a subset of SPRs

arch/powerpc/kvm/booke.c

@@ -1494,6 +1494,9 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
 	case KVM_REG_PPC_DAC2:
 		val = get_reg_val(reg->id, vcpu->arch.dbg_reg.dac2);
 		break;
+	case KVM_REG_PPC_DBSR:
+		val = get_reg_val(reg->id, vcpu->arch.dbsr);
+		break;
 	case KVM_REG_PPC_EPR: {
 		u32 epr = kvmppc_get_epr(vcpu);
 		val = get_reg_val(reg->id, epr);
@@ -1564,6 +1567,9 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
 	case KVM_REG_PPC_DAC2:
 		vcpu->arch.dbg_reg.dac2 = set_reg_val(reg->id, val);
 		break;
+	case KVM_REG_PPC_DBSR:
+		vcpu->arch.dbsr = set_reg_val(reg->id, val);
+		break;
 	case KVM_REG_PPC_EPR: {
 		u32 new_epr = set_reg_val(reg->id, val);
 		kvmppc_set_epr(vcpu, new_epr);