Commit afa45ff5 authored by Christian Borntraeger's avatar Christian Borntraeger
Browse files

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: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: default avatarJason J. Herne <jjherne@linux.vnet.ibm.com>
parent 672550fb

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

+1 −0
Original line number Diff line number Diff line
@@ -77,4 +77,5 @@ struct kvm_sync_regs { 
#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

+8 −0
Original line number Diff line number Diff line
@@ -576,6 +576,10 @@ static int kvm_arch_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, 
		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 @@ static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, 
		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;

	}