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Violators will be prosecuted; Fri, 10 Jun 2016 10:04:21 +0100 X-IBM-Helo: d06dlp01.portsmouth.uk.ibm.com X-IBM-MailFrom: cornelia.huck@de.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b06cxnps3074.portsmouth.uk.ibm.com (d06relay09.portsmouth.uk.ibm.com [9.149.109.194]) by d06dlp01.portsmouth.uk.ibm.com (Postfix) with ESMTP id 4464317D805F for ; Fri, 10 Jun 2016 10:05:31 +0100 (BST) Received: from d06av05.portsmouth.uk.ibm.com (d06av05.portsmouth.uk.ibm.com [9.149.37.229]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u5A94K8736241468 for ; Fri, 10 Jun 2016 09:04:20 GMT Received: from d06av05.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u5A94IaK018766 for ; Fri, 10 Jun 2016 03:04:19 -0600 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u5A94FZx018389 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA256 bits=256 verify=NO); Fri, 10 Jun 2016 03:04:17 -0600 From: Cornelia Huck To: qemu-devel@nongnu.org Date: Fri, 10 Jun 2016 11:04:10 +0200 X-Mailer: git-send-email 2.6.6 In-Reply-To: <1465549454-58809-1-git-send-email-cornelia.huck@de.ibm.com> References: <1465549454-58809-1-git-send-email-cornelia.huck@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16061009-0040-0000-0000-00000295B233 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16061009-0041-0000-0000-00001BD149BE Message-Id: <1465549454-58809-3-git-send-email-cornelia.huck@de.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-06-10_06:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1606100104 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH 2/6] virtio-bus: have callers tolerate new host notifier api X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: famz@redhat.com, mst@redhat.com, borntraeger@de.ibm.com, stefanha@redhat.com, Cornelia Huck , pbonzini@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Have vhost and dataplane use the new api for transports that have been converted. Signed-off-by: Cornelia Huck --- hw/block/dataplane/virtio-blk.c | 14 +++++++++++--- hw/scsi/virtio-scsi-dataplane.c | 20 +++++++++++++++----- hw/virtio/vhost.c | 20 ++++++++++++++++---- 3 files changed, 42 insertions(+), 12 deletions(-) diff --git a/hw/block/dataplane/virtio-blk.c b/hw/block/dataplane/virtio-blk.c index 2073f9a..fdf5fd1 100644 --- a/hw/block/dataplane/virtio-blk.c +++ b/hw/block/dataplane/virtio-blk.c @@ -79,7 +79,8 @@ void virtio_blk_data_plane_create(VirtIODevice *vdev, VirtIOBlkConf *conf, } /* Don't try if transport does not support notifiers. */ - if (!k->set_guest_notifiers || !k->set_host_notifier) { + if (!k->set_guest_notifiers || + (!k->set_host_notifier && !k->ioeventfd_started)) { error_setg(errp, "device is incompatible with dataplane " "(transport does not support notifiers)"); @@ -157,7 +158,10 @@ void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s) s->guest_notifier = virtio_queue_get_guest_notifier(s->vq); /* Set up virtqueue notify */ - r = k->set_host_notifier(qbus->parent, 0, true); + r = virtio_bus_set_host_notifier(VIRTIO_BUS(qbus), 0, true); + if (r == -ENOSYS) { + r = k->set_host_notifier(qbus->parent, 0, true); + } if (r != 0) { fprintf(stderr, "virtio-blk failed to set host notifier (%d)\n", r); goto fail_host_notifier; @@ -193,6 +197,7 @@ void virtio_blk_data_plane_stop(VirtIOBlockDataPlane *s) BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s->vdev))); VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); VirtIOBlock *vblk = VIRTIO_BLK(s->vdev); + int r; if (!vblk->dataplane_started || s->stopping) { return; @@ -217,7 +222,10 @@ void virtio_blk_data_plane_stop(VirtIOBlockDataPlane *s) aio_context_release(s->ctx); - k->set_host_notifier(qbus->parent, 0, false); + r = virtio_bus_set_host_notifier(VIRTIO_BUS(qbus), 0, false); + if (r == -ENOSYS) { + k->set_host_notifier(qbus->parent, 0, false); + } /* Clean up guest notifier (irq) */ k->set_guest_notifiers(qbus->parent, 1, false); diff --git a/hw/scsi/virtio-scsi-dataplane.c b/hw/scsi/virtio-scsi-dataplane.c index 1a49f1e..b9a5716 100644 --- a/hw/scsi/virtio-scsi-dataplane.c +++ b/hw/scsi/virtio-scsi-dataplane.c @@ -31,7 +31,8 @@ void virtio_scsi_set_iothread(VirtIOSCSI *s, IOThread *iothread) s->ctx = iothread_get_aio_context(vs->conf.iothread); /* Don't try if transport does not support notifiers. */ - if (!k->set_guest_notifiers || !k->set_host_notifier) { + if (!k->set_guest_notifiers || + (!k->set_host_notifier && !k->ioeventfd_started)) { fprintf(stderr, "virtio-scsi: Failed to set iothread " "(transport does not support notifiers)"); exit(1); @@ -73,7 +74,10 @@ static int virtio_scsi_vring_init(VirtIOSCSI *s, VirtQueue *vq, int n, int rc; /* Set up virtqueue notify */ - rc = k->set_host_notifier(qbus->parent, n, true); + rc = virtio_bus_set_host_notifier(VIRTIO_BUS(qbus), n, true); + if (rc == -ENOSYS) { + rc = k->set_host_notifier(qbus->parent, n, true); + } if (rc != 0) { fprintf(stderr, "virtio-scsi: Failed to set host notifier (%d)\n", rc); @@ -159,7 +163,10 @@ fail_vrings: virtio_scsi_clear_aio(s); aio_context_release(s->ctx); for (i = 0; i < vs->conf.num_queues + 2; i++) { - k->set_host_notifier(qbus->parent, i, false); + rc = virtio_bus_set_host_notifier(VIRTIO_BUS(qbus), i, false); + if (rc == -ENOSYS) { + k->set_host_notifier(qbus->parent, i, false); + } } k->set_guest_notifiers(qbus->parent, vs->conf.num_queues + 2, false); fail_guest_notifiers: @@ -174,7 +181,7 @@ void virtio_scsi_dataplane_stop(VirtIOSCSI *s) BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s))); VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s); - int i; + int i, rc; if (!s->dataplane_started || s->dataplane_stopping) { return; @@ -198,7 +205,10 @@ void virtio_scsi_dataplane_stop(VirtIOSCSI *s) aio_context_release(s->ctx); for (i = 0; i < vs->conf.num_queues + 2; i++) { - k->set_host_notifier(qbus->parent, i, false); + rc = virtio_bus_set_host_notifier(VIRTIO_BUS(qbus), i, false); + if (rc == -ENOSYS) { + k->set_host_notifier(qbus->parent, i, false); + } } /* Clean up guest notifier (irq) */ diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 81cc5b0..bce1b6e 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1110,14 +1110,18 @@ int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev) VirtioBusState *vbus = VIRTIO_BUS(qbus); VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus); int i, r, e; - if (!k->set_host_notifier) { + if (!k->set_host_notifier || !k->ioeventfd_started) { fprintf(stderr, "binding does not support host notifiers\n"); r = -ENOSYS; goto fail; } for (i = 0; i < hdev->nvqs; ++i) { - r = k->set_host_notifier(qbus->parent, hdev->vq_index + i, true); + r = virtio_bus_set_host_notifier(VIRTIO_BUS(qbus), hdev->vq_index + i, + true); + if (r == -ENOSYS) { + r = k->set_host_notifier(qbus->parent, hdev->vq_index + i, true); + } if (r < 0) { fprintf(stderr, "vhost VQ %d notifier binding failed: %d\n", i, -r); goto fail_vq; @@ -1127,7 +1131,11 @@ int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev) return 0; fail_vq: while (--i >= 0) { - e = k->set_host_notifier(qbus->parent, hdev->vq_index + i, false); + e = virtio_bus_set_host_notifier(VIRTIO_BUS(qbus), hdev->vq_index + i, + false); + if (e == -ENOSYS) { + e = k->set_host_notifier(qbus->parent, hdev->vq_index + i, false); + } if (e < 0) { fprintf(stderr, "vhost VQ %d notifier cleanup error: %d\n", i, -r); fflush(stderr); @@ -1151,7 +1159,11 @@ void vhost_dev_disable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev) int i, r; for (i = 0; i < hdev->nvqs; ++i) { - r = k->set_host_notifier(qbus->parent, hdev->vq_index + i, false); + r = virtio_bus_set_host_notifier(VIRTIO_BUS(qbus), hdev->vq_index + i, + false); + if (r == -ENOSYS) { + r = k->set_host_notifier(qbus->parent, hdev->vq_index + i, false); + } if (r < 0) { fprintf(stderr, "vhost VQ %d notifier cleanup failed: %d\n", i, -r); fflush(stderr);