commit afa45ff521130cee79a50b565693388be8c8c9c2
author Christian Borntraeger <borntraeger@de.ibm.com> Mon Feb 10 15:39:23 2014 +0100
committer Christian Borntraeger <borntraeger@de.ibm.com> Tue Mar 04 10:41:01 2014 +0100
tree 0e445ab6a4d8eecc0c78d422143ff9dddef19e34
parent 672550fb682e9935e1a318bf4ac3f611a057dee1

KVM: s390: expose gbea register to userspace

For migration/reset we want to expose the guest breaking event
address register to userspace. Lets use ONE_REG for that purpose.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>

arch/s390/include/uapi/asm/kvm.h

diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi/asm/kvm.h
index 7663244..2f0ade2 100644
--- a/arch/s390/include/uapi/asm/kvm.h
+++ b/arch/s390/include/uapi/asm/kvm.h
@@ -77,4 +77,5 @@
 #define KVM_REG_S390_PFCOMPARE	(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x6)
 #define KVM_REG_S390_PFSELECT	(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x7)
 #define KVM_REG_S390_PP		(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x8)
+#define KVM_REG_S390_GBEA	(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x9)
 #endif

arch/s390/kvm/kvm-s390.c

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 0262936..a3e4c07 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -576,6 +576,10 @@
 		r = put_user(vcpu->arch.sie_block->pp,
 			     (u64 __user *)reg->addr);
 		break;
+	case KVM_REG_S390_GBEA:
+		r = put_user(vcpu->arch.sie_block->gbea,
+			     (u64 __user *)reg->addr);
+		break;
 	default:
 		break;
 	}
@@ -621,6 +625,10 @@
 		r = get_user(vcpu->arch.sie_block->pp,
 			     (u64 __user *)reg->addr);
 		break;
+	case KVM_REG_S390_GBEA:
+		r = get_user(vcpu->arch.sie_block->gbea,
+			     (u64 __user *)reg->addr);
+		break;
 	default:
 		break;
 	}