diff options
| author | Jason J. herne <jjherne@us.ibm.com> | 2012-05-15 14:15:28 +0200 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2012-05-17 21:06:03 -0300 |
| commit | 46a6dd1c87c4ff17202574127daf70cc0bb38d6d (patch) | |
| tree | aa32b99750a38106918894e7e6e6164779a0d90e | |
| parent | 29b7c71b5ecf2caaa4c2105ecc0094826db8a8a8 (diff) | |
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>
| -rw-r--r-- | arch/s390/include/asm/kvm.h | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 16 |
2 files changed, 18 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kvm.h b/arch/s390/include/asm/kvm.h index 53a53720830a..bdcbe0f8dd7b 100644 --- a/arch/s390/include/asm/kvm.h +++ b/arch/s390/include/asm/kvm.h @@ -55,4 +55,6 @@ struct kvm_sync_regs { #define KVM_REG_S390_TODPR (KVM_REG_S390 | KVM_REG_SIZE_U32 | 0x1) #define KVM_REG_S390_EPOCHDIFF (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2) +#define KVM_REG_S390_CPU_TIMER (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3) +#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4) #endif 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; } |