Re: [PATCH 1/1] virtio/s390: implement PM operations for virtio_ccw
On 07.12.2017 15:11, Christian Borntraeger wrote: > Suspend/Resume to/from disk currently fails. Let us wire > up the necessary callbacks. This is mostly just forwarding > the requests to the virtio drivers. The only thing that > has to be done in virtio_ccw itself is to re-set the > virtio revision. > > Suggested-by: Thomas Huth> Signed-off-by: Christian Borntraeger > --- > drivers/s390/virtio/virtio_ccw.c | 25 + > 1 file changed, 25 insertions(+) > > diff --git a/drivers/s390/virtio/virtio_ccw.c > b/drivers/s390/virtio/virtio_ccw.c > index b18fe201..330b3fa 100644 > --- a/drivers/s390/virtio/virtio_ccw.c > +++ b/drivers/s390/virtio/virtio_ccw.c > @@ -1300,6 +1300,9 @@ static int virtio_ccw_cio_notify(struct ccw_device > *cdev, int event) > vcdev->device_lost = true; > rc = NOTIFY_DONE; > break; > + case CIO_OPER: > + rc = NOTIFY_OK; > + break; > default: > rc = NOTIFY_DONE; > break; > @@ -1312,6 +1315,25 @@ static struct ccw_device_id virtio_ids[] = { > {}, > }; > > +static int virtio_ccw_freeze(struct ccw_device *cdev) > +{ > + struct virtio_ccw_device *vcdev = dev_get_drvdata(>dev); > + > + return virtio_device_freeze(>vdev); > +} > + > +static int virtio_ccw_restore(struct ccw_device *cdev) > +{ > + struct virtio_ccw_device *vcdev = dev_get_drvdata(>dev); > + int ret; > + > + ret = virtio_ccw_set_transport_rev(vcdev); > + if (ret) > + return ret; > + > + return virtio_device_restore(>vdev); > +} > + > static struct ccw_driver virtio_ccw_driver = { > .driver = { > .owner = THIS_MODULE, > @@ -1324,6 +1346,9 @@ static struct ccw_driver virtio_ccw_driver = { > .set_online = virtio_ccw_online, > .notify = virtio_ccw_cio_notify, > .int_class = IRQIO_VIR, > + .freeze = virtio_ccw_freeze, > + .thaw = virtio_ccw_restore, > + .restore = virtio_ccw_restore, > }; > > static int __init pure_hex(char **cp, unsigned int *val, int min_digit, > Really neat, hope we haven't forgotten to reinitialize anything. (guess if it works, we should be 99.9% fine) Reviewed-by: David Hildenbrand -- Thanks, David / dhildenb ___ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
Re: [PATCH 1/1] virtio/s390: implement PM operations for virtio_ccw
On Thu, 7 Dec 2017 15:11:02 +0100 Christian Borntraegerwrote: > Suspend/Resume to/from disk currently fails. Let us wire > up the necessary callbacks. This is mostly just forwarding > the requests to the virtio drivers. The only thing that > has to be done in virtio_ccw itself is to re-set the > virtio revision. > > Suggested-by: Thomas Huth > Signed-off-by: Christian Borntraeger > --- > drivers/s390/virtio/virtio_ccw.c | 25 + > 1 file changed, 25 insertions(+) Less work than I had expected :) This looks complete: The only thing we do in our online function not directly triggered by registering the virtio device is setting the revision. Will apply, but would not mind some R-bs/acks. ___ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
[PATCH 1/1] virtio/s390: implement PM operations for virtio_ccw
Suspend/Resume to/from disk currently fails. Let us wire up the necessary callbacks. This is mostly just forwarding the requests to the virtio drivers. The only thing that has to be done in virtio_ccw itself is to re-set the virtio revision. Suggested-by: Thomas HuthSigned-off-by: Christian Borntraeger --- drivers/s390/virtio/virtio_ccw.c | 25 + 1 file changed, 25 insertions(+) diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c index b18fe201..330b3fa 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -1300,6 +1300,9 @@ static int virtio_ccw_cio_notify(struct ccw_device *cdev, int event) vcdev->device_lost = true; rc = NOTIFY_DONE; break; + case CIO_OPER: + rc = NOTIFY_OK; + break; default: rc = NOTIFY_DONE; break; @@ -1312,6 +1315,25 @@ static struct ccw_device_id virtio_ids[] = { {}, }; +static int virtio_ccw_freeze(struct ccw_device *cdev) +{ + struct virtio_ccw_device *vcdev = dev_get_drvdata(>dev); + + return virtio_device_freeze(>vdev); +} + +static int virtio_ccw_restore(struct ccw_device *cdev) +{ + struct virtio_ccw_device *vcdev = dev_get_drvdata(>dev); + int ret; + + ret = virtio_ccw_set_transport_rev(vcdev); + if (ret) + return ret; + + return virtio_device_restore(>vdev); +} + static struct ccw_driver virtio_ccw_driver = { .driver = { .owner = THIS_MODULE, @@ -1324,6 +1346,9 @@ static struct ccw_driver virtio_ccw_driver = { .set_online = virtio_ccw_online, .notify = virtio_ccw_cio_notify, .int_class = IRQIO_VIR, + .freeze = virtio_ccw_freeze, + .thaw = virtio_ccw_restore, + .restore = virtio_ccw_restore, }; static int __init pure_hex(char **cp, unsigned int *val, int min_digit, -- 2.9.4 ___ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization