From: Janosch Frank Date: Mon, 2 Sep 2019 08:34:44 +0200 Subject: KVM: s390: protvirt: Support cmd 5 operation state Git-commit: 7c36a3fcf444ced8efc3da106cc7215227d60fde Patch-mainline: v5.7-rc1 References: jsc#SLE-7512 bsc#1165545 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 Reviewed-by: David Hildenbrand Reviewed-by: Cornelia Huck [borntraeger@de.ibm.com: patch merging, splitting, fixing] Signed-off-by: Christian Borntraeger Acked-by: Petr Tesarik --- arch/s390/include/asm/uv.h | 1 + arch/s390/kvm/kvm-s390.c | 6 ++++++ 2 files changed, 7 insertions(+) --- a/arch/s390/include/asm/uv.h +++ b/arch/s390/include/asm/uv.h @@ -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; --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -3743,6 +3743,12 @@ int kvm_arch_vcpu_ioctl_set_mpstate(stru 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: