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bh=I00C3iqB1b+7BcWt1JcqvSkjkrWhgvVsrJ0zhWw37TY=; b=VzFiL2NESBqPnOZNKxmAEzT7s9j80yjo/ZQaA+3BP5vn50tR232TXE71sRroMxsi+NwL4p O2zAQZZDgN2DBNsS++YT2VvT1ShJl9lhjtkz1STq31gDYyWEDJxpvHtB2tApwOUO5WRZHg xP8BuwVOfBjlZ8jAtm8FnlrNKzD9yEU= X-MC-Unique: nkTsQOodNRiaKvJeAlic2g-1 From: Cindy Lu To: lulu@redhat.com, mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH v6 6/9] virtio-mmio: add support for configure interrupt Date: Tue, 27 Apr 2021 11:39:48 +0800 Message-Id: <20210427033951.29805-7-lulu@redhat.com> In-Reply-To: <20210427033951.29805-1-lulu@redhat.com> References: <20210427033951.29805-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 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=170.10.133.124; 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=-0.219, 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_H4=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: , 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 interrupt support for virtio-mmio bus. This interrupt will working while backend is vhost-vdpa Signed-off-by: Cindy Lu --- hw/virtio/virtio-mmio.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c index e1b5c3b81e..d8cb368728 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -632,7 +632,26 @@ static int virtio_mmio_set_guest_notifier(DeviceState = *d, int n, bool assign, =20 return 0; } +static int virtio_mmio_set_config_notifier(DeviceState *d, bool assign) +{ + VirtIOMMIOProxy *proxy =3D VIRTIO_MMIO(d); + VirtIODevice *vdev =3D virtio_bus_get_device(&proxy->bus); + VirtioDeviceClass *vdc =3D VIRTIO_DEVICE_GET_CLASS(vdev); =20 + EventNotifier *notifier =3D virtio_get_config_notifier(vdev); + int r =3D 0; + if (assign) { + r =3D event_notifier_init(notifier, 0); + virtio_set_config_notifier_fd_handler(vdev, true, false); + } else { + virtio_set_config_notifier_fd_handler(vdev, false, false); + event_notifier_cleanup(notifier); + } + if (vdc->guest_notifier_mask && vdev->use_guest_notifier_mask) { + vdc->guest_notifier_mask(vdev, -1, !assign); + } + return r; +} static int virtio_mmio_set_guest_notifiers(DeviceState *d, int nvqs, bool assign) { @@ -654,8 +673,15 @@ static int virtio_mmio_set_guest_notifiers(DeviceState= *d, int nvqs, goto assign_error; } } + r =3D virtio_mmio_set_config_notifier(d, assign); + if (r < 0) { + goto config_assign_error; + } =20 return 0; +config_assign_error: + assert(assign); + r =3D virtio_mmio_set_config_notifier(d, false); =20 assign_error: /* We get here on assignment failure. Recover by undoing for VQs 0 .. = n. */ --=20 2.21.3