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bh=3L2a3aC20CctGW8ViDBa0q+vliGznxxAh2017onu7KA=; b=NaCGXGwuCu/N4pGh/AowBm8m++lJP712T7HBJgfzB1i58dIFeskEYTtosGd5G8w2Gz+JAW eljoRRtHfywI+skgV0Pll4f8p0U3DDgUdsNNpqlzPwPVyQiSDwj/RTEd3b02lLyoLDislF xlv0Pn9OvD/07U766lW4JHG3ayyu14M= X-MC-Unique: 56Ysltt5N_2ia6ZWh77rxg-1 From: Cindy Lu To: lulu@redhat.com, mst@redhat.com, jasowang@redhat.com, kraxel@redhat.com, dgilbert@redhat.com, stefanha@redhat.com, arei.gonglei@huawei.com, marcandre.lureau@redhat.com Subject: [PATCH v9 09/10] virtio-mmio: add support for configure interrupt Date: Thu, 30 Sep 2021 10:33:47 +0800 Message-Id: <20210930023348.17770-10-lulu@redhat.com> In-Reply-To: <20210930023348.17770-1-lulu@redhat.com> References: <20210930023348.17770-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 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: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H2=-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: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1632969732608100001 Content-Type: text/plain; charset="utf-8" Add configure interrupt support for virtio-mmio bus. This interrupt will be working while the backend is vhost-vdpa Signed-off-by: Cindy Lu --- hw/virtio/virtio-mmio.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c index 1af48a1b04..695fd31f9d 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -673,7 +673,30 @@ static int virtio_mmio_set_guest_notifier(DeviceState = *d, int n, bool assign, =20 return 0; } +static int virtio_mmio_set_config_guest_notifier(DeviceState *d, bool assi= gn) +{ + VirtIOMMIOProxy *proxy =3D VIRTIO_MMIO(d); + VirtIODevice *vdev =3D virtio_bus_get_device(&proxy->bus); + VirtioDeviceClass *vdc =3D VIRTIO_DEVICE_GET_CLASS(vdev); + bool with_irqfd =3D false; + EventNotifier *notifier =3D virtio_config_get_guest_notifier(vdev); + int r =3D 0; =20 + if (assign) { + r =3D event_notifier_init(notifier, 0); + if (r < 0) { + return r; + } + virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irq= fd); + } else { + virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irq= fd); + event_notifier_cleanup(notifier); + } + if (vdc->guest_notifier_mask && vdev->use_guest_notifier_mask) { + vdc->guest_notifier_mask(vdev, VIRTIO_CONFIG_IRQ_IDX, !assign); + } + return r; +} static int virtio_mmio_set_guest_notifiers(DeviceState *d, int nvqs, bool assign) { @@ -695,6 +718,10 @@ static int virtio_mmio_set_guest_notifiers(DeviceState= *d, int nvqs, goto assign_error; } } + r =3D virtio_mmio_set_config_guest_notifier(d, assign); + if (r < 0) { + goto assign_error; + } =20 return 0; =20 --=20 2.21.3