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KVM: PPC: Book3S PR: Expose TAR facility to guest

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POWER8 implements a new register called TAR. This register has to be
enabled in FSCR and then from KVM's point of view is mere storage.

This patch enables the guest to use TAR.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf
2014-04-22 12:26:58 +02:00
parent 616dff8602
commit e14e7a1e53
5 changed files with 28 additions and 6 deletions
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6
arch/powerpc/kvm/book3s.c
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@@ -634,6 +634,9 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
case KVM_REG_PPC_FSCR:
val = get_reg_val(reg->id, vcpu->arch.fscr);
break;
case KVM_REG_PPC_TAR:
val = get_reg_val(reg->id, vcpu->arch.tar);
break;
default:
r = -EINVAL;
break;
@@ -726,6 +729,9 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
case KVM_REG_PPC_FSCR:
vcpu->arch.fscr = set_reg_val(reg->id, val);
break;
case KVM_REG_PPC_TAR:
vcpu->arch.tar = set_reg_val(reg->id, val);
break;
default:
r = -EINVAL;
break;