diff options
| author | Jagannathan Raman <jag.raman@oracle.com> | 2022-06-13 16:26:21 -0400 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2022-06-15 14:50:41 +0100 |
| commit | 217c7f01adaf2853951d4725e3527ae70c45fbfc (patch) | |
| tree | 6d98aab623149d74f19b1549cdb56d83e759b436 /softmmu/qdev-monitor.c | |
| parent | e2848bc574fe2715c694bf8fe9a1ba7f78a1125a (diff) | |
qdev: unplug blocker for devices
Add blocker to prevent hot-unplug of devices
TYPE_VFIO_USER_SERVER, which is introduced shortly, attaches itself to a
PCIDevice on which it depends. If the attached PCIDevice gets removed
while the server in use, it could cause it crash. To prevent this,
TYPE_VFIO_USER_SERVER adds an unplug blocker for the PCIDevice.
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: c41ef80b7cc063314d629737bed2159e5713f2e0.1655151679.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'softmmu/qdev-monitor.c')
| -rw-r--r-- | softmmu/qdev-monitor.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/softmmu/qdev-monitor.c b/softmmu/qdev-monitor.c index bb5897fc76..4b0ef65780 100644 --- a/softmmu/qdev-monitor.c +++ b/softmmu/qdev-monitor.c @@ -899,6 +899,10 @@ void qdev_unplug(DeviceState *dev, Error **errp) HotplugHandlerClass *hdc; Error *local_err = NULL; + if (qdev_unplug_blocked(dev, errp)) { + return; + } + if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) { error_setg(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); return; |