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| author |   Janosch Frank <frankja@linux.ibm.com> | 2019-05-15 13:24:30 +0200 |
|---|---|---|
| committer |   Christian Borntraeger <borntraeger@de.ibm.com> | 2020-02-27 19:47:12 +0100 |
| commit | fe28c7868f68b82e4517efb1dc3c22e2297df340 (patch) | |
| tree | 4bb74a1c85657764d000e5232e38699120ac7bc4 /arch/s390/kvm/pv.c | |
| parent | KVM: s390: protvirt: UV calls in support of diag308 0, 1 (diff) | |
| download | linux-dev-fe28c7868f68b82e4517efb1dc3c22e2297df340.tar.xz linux-dev-fe28c7868f68b82e4517efb1dc3c22e2297df340.zip | |
KVM: s390: protvirt: Report CPU state to Ultravisor
VCPU states have to be reported to the ultravisor for SIGP
interpretation, kdump, kexec and reboot.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
[borntraeger@de.ibm.com: patch merging, splitting, fixing]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/pv.c')
| -rw-r--r-- | arch/s390/kvm/pv.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/s390/kvm/pv.c b/arch/s390/kvm/pv.c index 13a41533eacf..63e330109b63 100644 --- a/arch/s390/kvm/pv.c +++ b/arch/s390/kvm/pv.c @@ -283,3 +283,21 @@ int kvm_s390_pv_unpack(struct kvm *kvm, unsigned long addr, unsigned long size, KVM_UV_EVENT(kvm, 3, "%s", "PROTVIRT VM UNPACK: successful"); return ret; } + +int kvm_s390_pv_set_cpu_state(struct kvm_vcpu *vcpu, u8 state) +{ + struct uv_cb_cpu_set_state uvcb = { + .header.cmd = UVC_CMD_CPU_SET_STATE, + .header.len = sizeof(uvcb), + .cpu_handle = kvm_s390_pv_cpu_get_handle(vcpu), + .state = state, + }; + int cc; + + cc = uv_call(0, (u64)&uvcb); + KVM_UV_EVENT(vcpu->kvm, 3, "PROTVIRT SET CPU %d STATE %d rc %x rrc %x", + vcpu->vcpu_id, state, uvcb.header.rc, uvcb.header.rrc); + if (cc) + return -EINVAL; + return 0; +} |