KVM: s390: ucontrol: announce capability for user controlled vms

This patch announces a new capability KVM_CAP_S390_UCONTROL that
indicates that kvm can now support virtual machines that are
controlled by userspace.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

2 files changed, 4 insertions, 0 deletions

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index abf784d8c680..a1061b361c43 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -129,6 +129,9 @@ int kvm_dev_ioctl_check_extension(long ext)
         case KVM_CAP_S390_PSW:
         case KVM_CAP_S390_GMAP:
         case KVM_CAP_SYNC_MMU:
+#ifdef CONFIG_KVM_S390_UCONTROL
+        case KVM_CAP_S390_UCONTROL:
+#endif
                 r = 1;
                 break;
         default:
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 778e748927b4..6cf048d9604b 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -569,6 +569,7 @@ struct kvm_ppc_pvinfo {
 #define KVM_CAP_PPC_PAPR 68
 #define KVM_CAP_S390_GMAP 71
 #define KVM_CAP_TSC_DEADLINE_TIMER 72
+#define KVM_CAP_S390_UCONTROL 73
 
 #ifdef KVM_CAP_IRQ_ROUTING