From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34633) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aV0IX-0006pI-KR for qemu-devel@nongnu.org; Sun, 14 Feb 2016 12:17:26 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aV0IU-000349-QC for qemu-devel@nongnu.org; Sun, 14 Feb 2016 12:17:25 -0500 Received: from mail-wm0-x242.google.com ([2a00:1450:400c:c09::242]:35979) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aV0IU-000345-Jv for qemu-devel@nongnu.org; Sun, 14 Feb 2016 12:17:22 -0500 Received: by mail-wm0-x242.google.com with SMTP id a4so6818646wme.3 for ; Sun, 14 Feb 2016 09:17:22 -0800 (PST) Sender: Paolo Bonzini From: Paolo Bonzini Date: Sun, 14 Feb 2016 18:17:05 +0100 Message-Id: <1455470231-5223-3-git-send-email-pbonzini@redhat.com> In-Reply-To: <1455470231-5223-1-git-send-email-pbonzini@redhat.com> References: <1455470231-5223-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PATCH 2/8] vring: make vring_enable_notification return void List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: stefanha@redhat.com, mst@redhat.com Make the API more similar to the regular virtqueue API. This will help when modifying the code to not use vring.c anymore. Signed-off-by: Paolo Bonzini --- hw/block/dataplane/virtio-blk.c | 3 ++- hw/virtio/dataplane/vring.c | 3 +-- include/hw/virtio/dataplane/vring.h | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/hw/block/dataplane/virtio-blk.c b/hw/block/dataplane/virtio-blk.c index 0d99781..03b81bc 100644 --- a/hw/block/dataplane/virtio-blk.c +++ b/hw/block/dataplane/virtio-blk.c @@ -128,7 +128,8 @@ static void handle_notify(EventNotifier *e) /* Re-enable guest->host notifies and stop processing the vring. * But if the guest has snuck in more descriptors, keep processing. */ - if (vring_enable_notification(s->vdev, &s->vring)) { + vring_enable_notification(s->vdev, &s->vring); + if (!vring_more_avail(s->vdev, &s->vring)) { break; } } else { /* fatal error */ diff --git a/hw/virtio/dataplane/vring.c b/hw/virtio/dataplane/vring.c index 4308d9f..157e8b8 100644 --- a/hw/virtio/dataplane/vring.c +++ b/hw/virtio/dataplane/vring.c @@ -175,7 +175,7 @@ void vring_disable_notification(VirtIODevice *vdev, Vring *vring) * * Return true if the vring is empty, false if there are more requests. */ -bool vring_enable_notification(VirtIODevice *vdev, Vring *vring) +void vring_enable_notification(VirtIODevice *vdev, Vring *vring) { if (virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { vring_avail_event(&vring->vr) = vring->vr.avail->idx; @@ -183,7 +183,6 @@ bool vring_enable_notification(VirtIODevice *vdev, Vring *vring) vring_clear_used_flags(vdev, vring, VRING_USED_F_NO_NOTIFY); } smp_mb(); /* ensure update is seen before reading avail_idx */ - return !vring_more_avail(vdev, vring); } /* This is stolen from linux/drivers/vhost/vhost.c:vhost_notify() */ diff --git a/include/hw/virtio/dataplane/vring.h b/include/hw/virtio/dataplane/vring.h index e80985e..e1c2a65 100644 --- a/include/hw/virtio/dataplane/vring.h +++ b/include/hw/virtio/dataplane/vring.h @@ -42,7 +42,7 @@ static inline void vring_set_broken(Vring *vring) bool vring_setup(Vring *vring, VirtIODevice *vdev, int n); void vring_teardown(Vring *vring, VirtIODevice *vdev, int n); void vring_disable_notification(VirtIODevice *vdev, Vring *vring); -bool vring_enable_notification(VirtIODevice *vdev, Vring *vring); +void vring_enable_notification(VirtIODevice *vdev, Vring *vring); bool vring_should_notify(VirtIODevice *vdev, Vring *vring); void *vring_pop(VirtIODevice *vdev, Vring *vring, size_t sz); void vring_push(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem, -- 1.8.3.1