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bh=uV3tN7/4T1lP1gT72DEsLwlmOWV8Y7jvuEpZJYHhelg=; b=FgITz8qgBxNKaD+KXlLccOfta3gdvlPjiEUO9M/dLQaErG4+cquCQ75s7Wt70nDeKp3SBR dbZrQMTfCRwKJAVdRWtYVmB236HHqN8UAMnO2tZZy/1zKOFhidvinMPmlqBq5cnFgDHRkM uRfNhSUBM2K3LZpoIJ4S5eWSUUrmkoA= X-MC-Unique: 4TIMKQggPKyXeJmZSH0r2g-1 From: Cindy Lu To: mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH v1 1/4] virtio:add support in configure interrupt Date: Wed, 13 Jan 2021 23:45:37 +0800 Message-Id: <20210113154540.24981-2-lulu@redhat.com> In-Reply-To: <20210113154540.24981-1-lulu@redhat.com> References: <20210113154540.24981-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lulu@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=216.205.24.124; envelope-from=lulu@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.25, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no 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: lulu@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" Add configure notifier and virtio_set_config_notifier_fd_handler in virtio Signed-off-by: Cindy Lu --- hw/virtio/virtio.c | 25 +++++++++++++++++++++++++ include/hw/virtio/virtio.h | 5 +++++ 2 files changed, 30 insertions(+) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index ceb58fda6c..66ed1daf95 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -3502,6 +3502,15 @@ static void virtio_queue_guest_notifier_read(EventNo= tifier *n) } } =20 +static void virtio_queue_config_read(EventNotifier *n) +{ + VirtIODevice *vdev =3D container_of(n, VirtIODevice, config_notifier); + + if (event_notifier_test_and_clear(n)) { + + virtio_notify_config(vdev); + } +} void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign, bool with_irqfd) { @@ -3518,6 +3527,17 @@ void virtio_queue_set_guest_notifier_fd_handler(Virt= Queue *vq, bool assign, } } =20 +void virtio_set_config_notifier_fd_handler(VirtIODevice *vdev, bool assign, + bool with_irqfd) +{ + if (assign && !with_irqfd) { + event_notifier_set_handler(&vdev->config_notifier, + virtio_queue_config_read); + } else { + event_notifier_set_handler(&vdev->config_notifier, NULL); + } +} + EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq) { return &vq->guest_notifier; @@ -3591,6 +3611,11 @@ EventNotifier *virtio_queue_get_host_notifier(VirtQu= eue *vq) return &vq->host_notifier; } =20 +EventNotifier *virtio_queue_get_config_notifier(VirtIODevice *vdev) +{ + return &vdev->config_notifier; + +} void virtio_queue_set_host_notifier_enabled(VirtQueue *vq, bool enabled) { vq->host_notifier_enabled =3D enabled; diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index b7ece7a6a8..38bd28242e 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -108,6 +108,7 @@ struct VirtIODevice bool use_guest_notifier_mask; AddressSpace *dma_as; QLIST_HEAD(, VirtQueue) *vector_queues; + EventNotifier config_notifier; }; =20 struct VirtioDeviceClass { @@ -310,11 +311,15 @@ uint16_t virtio_get_queue_index(VirtQueue *vq); EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq); void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign, bool with_irqfd); +void virtio_set_config_notifier_fd_handler(VirtIODevice *vdev, bool assign, + bool with_irqfd); + int virtio_device_start_ioeventfd(VirtIODevice *vdev); int virtio_device_grab_ioeventfd(VirtIODevice *vdev); void virtio_device_release_ioeventfd(VirtIODevice *vdev); bool virtio_device_ioeventfd_enabled(VirtIODevice *vdev); EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq); +EventNotifier *virtio_queue_get_config_notifier(VirtIODevice *vdev); void virtio_queue_set_host_notifier_enabled(VirtQueue *vq, bool enabled); void virtio_queue_host_notifier_read(EventNotifier *n); void virtio_queue_aio_set_host_notifier_handler(VirtQueue *vq, AioContext = *ctx, --=20 2.21.3