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authorChristian Borntraeger <borntraeger@de.ibm.com>2017-11-09 10:00:45 +0100
committerChristian Borntraeger <borntraeger@de.ibm.com>2017-11-09 16:48:51 +0100
commitda9a1446d248f673a8560ce46251ff620214ab7b (patch)
tree1ad9a5e7c71c4c31536e0a532339ec759a2ad0e8 /arch
parent4dd6f17eb913d3d23dd6c07950627ac2c3068dca (diff)
downloadlinux-da9a1446d248f673a8560ce46251ff620214ab7b.tar.bz2
KVM: s390: provide a capability for AIS state migration
The AIS capability was introduced in 4.12, while the interface to migrate the state was added in 4.13. Unfortunately it is not possible for userspace to detect the migration capability without creating a flic kvm device. As in QEMU the cpu model detection runs on the "none" machine this will result in cpu model issues regarding the "ais" capability. To get the "ais" capability properly let's add a new KVM capability that tells userspace that AIS states can be migrated. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kvm/kvm-s390.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index de6a5b790da0..8f4b655f65d7 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -395,6 +395,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_S390_USER_INSTR0:
case KVM_CAP_S390_CMMA_MIGRATION:
case KVM_CAP_S390_AIS:
+ case KVM_CAP_S390_AIS_MIGRATION:
r = 1;
break;
case KVM_CAP_S390_MEM_OP: