diff mbox series

[v7,13/13] s390x: topology: activating CPU topology

Message ID 20220420115745.13696-14-pmorel@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series s390x: CPU Topology | expand

Commit Message

Pierre Morel April 20, 2022, 11:57 a.m. UTC 
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
 target/s390x/kvm/kvm.c | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index 17f426864b..cae37cddc3 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -366,6 +366,7 @@  int kvm_arch_init(MachineState *ms, KVMState *s)
     kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
     kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
     kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
+    kvm_vm_enable_cap(s, KVM_CAP_S390_CPU_TOPOLOGY, 0);
     if (ri_allowed()) {
         if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
             cap_ri = 1;
@@ -2460,6 +2461,14 @@  void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
         set_bit(S390_FEAT_UNPACK, model->features);
     }
 
+    /*
+     * If we have the CPU Topology implemented in KVM activate
+     * the CPU TOPOLOGY feature.
+     */
+    if (kvm_check_extension(kvm_state, KVM_CAP_S390_CPU_TOPOLOGY)) {
+        set_bit(S390_FEAT_CONFIGURATION_TOPOLOGY, model->features);
+    }
+
     /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
     set_bit(S390_FEAT_ZPCI, model->features);
     set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);