KVM: s390: implement KVM_CAP_NR/MAX_VCPUS

Let userspace know the number of max and supported cpus for kvm on s390.
Return KVM_MAX_VCPUS (currently 64) for both values.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index fd98914a36f1..e5e3800b0125 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -136,6 +136,10 @@ int kvm_dev_ioctl_check_extension(long ext)
         case KVM_CAP_SYNC_REGS:
                 r = 1;
                 break;
+        case KVM_CAP_NR_VCPUS:
+        case KVM_CAP_MAX_VCPUS:
+                r = KVM_MAX_VCPUS;
+                break;
         default:
                 r = 0;
         }