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>
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@ -55,4 +55,6 @@ struct kvm_sync_regs {
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#define KVM_REG_S390_TODPR (KVM_REG_S390 | KVM_REG_SIZE_U32 | 0x1)
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#define KVM_REG_S390_TODPR (KVM_REG_S390 | KVM_REG_SIZE_U32 | 0x1)
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#define KVM_REG_S390_EPOCHDIFF (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2)
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#define KVM_REG_S390_EPOCHDIFF (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2)
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#define KVM_REG_S390_CPU_TIMER (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3)
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#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4)
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#endif
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#endif
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@ -454,6 +454,14 @@ static int kvm_arch_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu,
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r = put_user(vcpu->arch.sie_block->epoch,
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r = put_user(vcpu->arch.sie_block->epoch,
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(u64 __user *)reg->addr);
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(u64 __user *)reg->addr);
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break;
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break;
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case KVM_REG_S390_CPU_TIMER:
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r = put_user(vcpu->arch.sie_block->cputm,
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(u64 __user *)reg->addr);
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break;
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case KVM_REG_S390_CLOCK_COMP:
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r = put_user(vcpu->arch.sie_block->ckc,
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(u64 __user *)reg->addr);
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break;
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default:
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default:
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break;
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break;
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}
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}
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@ -475,6 +483,14 @@ static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu,
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r = get_user(vcpu->arch.sie_block->epoch,
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r = get_user(vcpu->arch.sie_block->epoch,
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(u64 __user *)reg->addr);
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(u64 __user *)reg->addr);
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break;
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break;
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case KVM_REG_S390_CPU_TIMER:
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r = get_user(vcpu->arch.sie_block->cputm,
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(u64 __user *)reg->addr);
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break;
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case KVM_REG_S390_CLOCK_COMP:
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r = get_user(vcpu->arch.sie_block->ckc,
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(u64 __user *)reg->addr);
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break;
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default:
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default:
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break;
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break;
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}
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}
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