KVM: s390: protvirt: Support cmd 5 operation state (7c36a3fc) · Commits · 戴 / test

Code 5 for the set cpu state UV call tells the UV to load a PSW from the SE header (first IPL) or from guest location 0x0 (diag 308 subcode 0/1). Also it sets the cpu into operating state afterwards, so we can start it. Signed-off-by:

Janosch Frank <frankja@linux.ibm.com> Reviewed-by:

David Hildenbrand <david@redhat.com> Reviewed-by:

Cornelia Huck <cohuck@redhat.com> [borntraeger@de.ibm.com: patch merging, splitting, fixing] Signed-off-by:

Christian Borntraeger <borntraeger@de.ibm.com>

arch/s390/include/asm/uv.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -169,6 +169,7 @@ struct uv_cb_unp {
		#define PV_CPU_STATE_OPR 1
		#define PV_CPU_STATE_STP 2
		#define PV_CPU_STATE_CHKSTP 3
		#define PV_CPU_STATE_OPR_LOAD 5

		struct uv_cb_cpu_set_state {
		struct uv_cb_header header;

arch/s390/kvm/kvm-s390.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -3736,6 +3736,12 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
		rc = kvm_s390_vcpu_start(vcpu);
		break;
		case KVM_MP_STATE_LOAD:
		if (!kvm_s390_pv_cpu_is_protected(vcpu)) {
		rc = -ENXIO;
		break;
		}
		rc = kvm_s390_pv_set_cpu_state(vcpu, PV_CPU_STATE_OPR_LOAD);
		break;
		case KVM_MP_STATE_CHECK_STOP:
		/* fall through - CHECK_STOP and LOAD are not supported yet */
		default:

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