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Tue, 23 Jun 2020 08:10:29 +0000 (UTC) Date: Tue, 23 Jun 2020 10:10:26 +0200 From: Cornelia Huck To: Kirti Wankhede Subject: Re: [PATCH QEMU v25 06/17] vfio: Add migration state change notifier Message-ID: <20200623101026.1a1b6271.cohuck@redhat.com> In-Reply-To: <1592684486-18511-7-git-send-email-kwankhede@nvidia.com> References: <1592684486-18511-1-git-send-email-kwankhede@nvidia.com> <1592684486-18511-7-git-send-email-kwankhede@nvidia.com> Organization: Red Hat GmbH MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=cohuck@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=205.139.110.120; envelope-from=cohuck@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/23 01:53:54 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: cjia@nvidia.com, aik@ozlabs.ru, Zhengxiao.zx@Alibaba-inc.com, shuangtai.tst@alibaba-inc.com, qemu-devel@nongnu.org, peterx@redhat.com, eauger@redhat.com, yi.l.liu@intel.com, quintela@redhat.com, ziye.yang@intel.com, armbru@redhat.com, mlevitsk@redhat.com, pasic@linux.ibm.com, felipe@nutanix.com, zhi.a.wang@intel.com, kevin.tian@intel.com, yan.y.zhao@intel.com, dgilbert@redhat.com, alex.williamson@redhat.com, changpeng.liu@intel.com, eskultet@redhat.com, Ken.Xue@amd.com, jonathan.davies@nutanix.com, pbonzini@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Sun, 21 Jun 2020 01:51:15 +0530 Kirti Wankhede wrote: > Added migration state change notifier to get notification on migration state > change. These states are translated to VFIO device state and conveyed to vendor > driver. > > Signed-off-by: Kirti Wankhede > Reviewed-by: Neo Jia > Reviewed-by: Dr. David Alan Gilbert > --- > hw/vfio/migration.c | 29 +++++++++++++++++++++++++++++ > hw/vfio/trace-events | 5 +++-- > include/hw/vfio/vfio-common.h | 1 + > 3 files changed, 33 insertions(+), 2 deletions(-) > > diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c > index fcecc0bb0874..e30bd8768701 100644 > --- a/hw/vfio/migration.c > +++ b/hw/vfio/migration.c > @@ -154,6 +154,28 @@ static void vfio_vmstate_change(void *opaque, int running, RunState state) > } > } > > +static void vfio_migration_state_notifier(Notifier *notifier, void *data) > +{ > + MigrationState *s = data; > + VFIODevice *vbasedev = container_of(notifier, VFIODevice, migration_state); > + int ret; > + > + trace_vfio_migration_state_notifier(vbasedev->name, > + MigrationStatus_str(s->state)); > + > + switch (s->state) { > + case MIGRATION_STATUS_CANCELLING: > + case MIGRATION_STATUS_CANCELLED: > + case MIGRATION_STATUS_FAILED: > + ret = vfio_migration_set_state(vbasedev, > + ~(VFIO_DEVICE_STATE_SAVING | VFIO_DEVICE_STATE_RESUMING), > + VFIO_DEVICE_STATE_RUNNING); > + if (ret) { > + error_report("%s: Failed to set state RUNNING", vbasedev->name); Also see https://lore.kernel.org/qemu-devel/20200505124639.56531df8.cohuck@redhat.com/. > + } > + } > +} > + > static int vfio_migration_init(VFIODevice *vbasedev, > struct vfio_region_info *info) > {