aboutsummaryrefslogtreecommitdiff
path: root/arch/s390/kvm
diff options
context:
space:
mode:
authorJason J. herne <jjherne@us.ibm.com>2012-05-15 14:15:28 +0200
committerMarcelo Tosatti <mtosatti@redhat.com>2012-05-17 21:06:03 -0300
commit46a6dd1c87c4ff17202574127daf70cc0bb38d6d (patch)
treeaa32b99750a38106918894e7e6e6164779a0d90e /arch/s390/kvm
parent29b7c71b5ecf2caaa4c2105ecc0094826db8a8a8 (diff)
downloadlinux-linaro-stable-46a6dd1c87c4ff17202574127daf70cc0bb38d6d.tar.gz
KVM: s390: onereg for timer related registers
Enhance the KVM ONE_REG capability within S390 to allow getting/setting the following special cpu registers: clock comparator and the cpu timer. These are needed for migration. Signed-off-by: Jason J. herne <jjherne@us.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/kvm-s390.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index cc4c01322ce4..664766d0c83c 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -454,6 +454,14 @@ static int kvm_arch_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu,
r = put_user(vcpu->arch.sie_block->epoch,
(u64 __user *)reg->addr);
break;
+ case KVM_REG_S390_CPU_TIMER:
+ r = put_user(vcpu->arch.sie_block->cputm,
+ (u64 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_CLOCK_COMP:
+ r = put_user(vcpu->arch.sie_block->ckc,
+ (u64 __user *)reg->addr);
+ break;
default:
break;
}
@@ -475,6 +483,14 @@ static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu,
r = get_user(vcpu->arch.sie_block->epoch,
(u64 __user *)reg->addr);
break;
+ case KVM_REG_S390_CPU_TIMER:
+ r = get_user(vcpu->arch.sie_block->cputm,
+ (u64 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_CLOCK_COMP:
+ r = get_user(vcpu->arch.sie_block->ckc,
+ (u64 __user *)reg->addr);
+ break;
default:
break;
}