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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2017-11-09 10:00:45 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2017-11-09 16:48:51 +0100 |
| commit | da9a1446d248f673a8560ce46251ff620214ab7b (patch) | |
| tree | 1ad9a5e7c71c4c31536e0a532339ec759a2ad0e8 /arch | |
| parent | 4dd6f17eb913d3d23dd6c07950627ac2c3068dca (diff) | |
| download | linux-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.c | 1 |
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: |