diff options
| author | Farhan Ali <alifm@linux.ibm.com> | 2020-05-05 14:57:54 +0200 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2020-06-18 12:13:54 +0200 |
| commit | 46ea3841edaff2a7657b8f6c7f474e5e3850cd62 (patch) | |
| tree | 4677779b12e978ec704fd3251889d93595b9c475 /hw/s390x/s390-ccw.c | |
| parent | 2a3b9cbaa7b25a4db4cdcfe1c65279c5464f2923 (diff) | |
vfio-ccw: Add support for the schib region
The schib region can be used to obtain the latest SCHIB from the host
passthrough subchannel. Since the guest SCHIB is virtualized,
we currently only update the path related information so that the
guest is aware of any path related changes when it issues the
'stsch' instruction.
Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200505125757.98209-4-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'hw/s390x/s390-ccw.c')
| -rw-r--r-- | hw/s390x/s390-ccw.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/hw/s390x/s390-ccw.c b/hw/s390x/s390-ccw.c index c48510f9e5..b497571863 100644 --- a/hw/s390x/s390-ccw.c +++ b/hw/s390x/s390-ccw.c @@ -51,6 +51,27 @@ int s390_ccw_clear(SubchDev *sch) return cdc->handle_clear(sch); } +IOInstEnding s390_ccw_store(SubchDev *sch) +{ + S390CCWDeviceClass *cdc = NULL; + int ret = IOINST_CC_EXPECTED; + + /* + * This code is called for both virtual and passthrough devices, + * but only applies to to the latter. This ugly check makes that + * distinction for us. + */ + if (object_dynamic_cast(OBJECT(sch->driver_data), TYPE_S390_CCW)) { + cdc = S390_CCW_DEVICE_GET_CLASS(sch->driver_data); + } + + if (cdc && cdc->handle_store) { + ret = cdc->handle_store(sch); + } + + return ret; +} + static void s390_ccw_get_dev_info(S390CCWDevice *cdev, char *sysfsdev, Error **errp) |