KVM: s390: Add support for machine checks.

Add support for injecting machine checks (only repressible
conditions for now).

This is a bit more involved than I/O interrupts, for these reasons:

- Machine checks come in both floating and cpu varieties.
- We don't have a bit for machine checks enabling, but have to use
  a roundabout approach with trapping PSW changing instructions and
  watching for opened machine checks.

Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 54540bdd3340..80bb3b801116 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -397,6 +397,7 @@ struct kvm_s390_psw {
 #define KVM_S390_PROGRAM_INT            0xfffe0001u
 #define KVM_S390_SIGP_SET_PREFIX        0xfffe0002u
 #define KVM_S390_RESTART                0xfffe0003u
+#define KVM_S390_MCHK                   0xfffe1000u
 #define KVM_S390_INT_VIRTIO             0xffff2603u
 #define KVM_S390_INT_SERVICE            0xffff2401u
 #define KVM_S390_INT_EMERGENCY          0xffff1201u