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bh=BfmnGnKUK5degPgxbByibkUkf3YY+gi07heNJgVgNjE=; b=cqXqo9cTgDuc56g8UTRvhT6d9oM/7tFTzQdJK/+xkXIAHuaYfMGP8MMC7UnObSGBXT9Rah fPUljS/CmkWne4uxGQc/7wPxzaoK9KU6Elp7wWw7A83nxwQ/TwXaWNhBAvsk4lmM/EgSYw Ezvc2REQq9hGyhkc2YpGa08zDn61JXU= X-MC-Unique: ytXt5WinPc2h42tX688nTg-1 From: Cindy Lu To: lulu@redhat.com, mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH v6 8/9] virtio: decouple virtqueue from set notifier fd handler Date: Tue, 27 Apr 2021 11:39:50 +0800 Message-Id: <20210427033951.29805-9-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" This patch will decouple virtqueue from virtio_queue_set_guest_notifier_fd_handler, here queue number -1 mean the configure interrupt. The funtion will set the config_notify_read as fd handler Signed-off-by: Cindy Lu --- hw/s390x/virtio-ccw.c | 6 +++--- hw/virtio/virtio-mmio.c | 8 ++++---- hw/virtio/virtio-pci.c | 9 +++++---- hw/virtio/virtio.c | 35 +++++++++++++++++------------------ include/hw/virtio/virtio.h | 4 +--- 5 files changed, 30 insertions(+), 32 deletions(-) diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 4582e94ae7..5d73c99d30 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -989,11 +989,11 @@ static int virtio_ccw_set_guest_notifier(VirtioCcwDev= ice *dev, int n, if (r < 0) { return r; } - virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); + virtio_set_notifier_fd_handler(vdev, n, true, with_irqfd); if (with_irqfd) { r =3D virtio_ccw_add_irqfd(dev, n); if (r) { - virtio_queue_set_guest_notifier_fd_handler(vq, false, + virtio_set_notifier_fd_handler(vdev, n, false, with_irqfd); return r; } @@ -1017,7 +1017,7 @@ static int virtio_ccw_set_guest_notifier(VirtioCcwDev= ice *dev, int n, if (with_irqfd) { virtio_ccw_remove_irqfd(dev, n); } - virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); + virtio_set_notifier_fd_handler(vdev, n, false, with_irqfd); event_notifier_cleanup(notifier); } return 0; diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c index d8cb368728..4ea55001be 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -620,9 +620,9 @@ static int virtio_mmio_set_guest_notifier(DeviceState *= d, int n, bool assign, if (r < 0) { return r; } - virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); + virtio_set_notifier_fd_handler(vdev, n, true, with_irqfd); } else { - virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); + virtio_set_notifier_fd_handler(vdev, n, false, with_irqfd); event_notifier_cleanup(notifier); } =20 @@ -642,9 +642,9 @@ static int virtio_mmio_set_config_notifier(DeviceState = *d, bool assign) int r =3D 0; if (assign) { r =3D event_notifier_init(notifier, 0); - virtio_set_config_notifier_fd_handler(vdev, true, false); + virtio_set_notifier_fd_handler(vdev, -1, true, false); } else { - virtio_set_config_notifier_fd_handler(vdev, false, false); + virtio_set_notifier_fd_handler(vdev, -1, false, false); event_notifier_cleanup(notifier); } if (vdc->guest_notifier_mask && vdev->use_guest_notifier_mask) { diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 07d28dd367..5033b3db4f 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -806,10 +806,10 @@ static int virtio_pci_set_config_notifier(DeviceState= *d, bool assign) int r =3D 0; if (assign) { r =3D event_notifier_init(notifier, 0); - virtio_set_config_notifier_fd_handler(vdev, true, true); + virtio_set_notifier_fd_handler(vdev, -1, true, true); kvm_virtio_pci_vector_config_use(proxy); } else { - virtio_set_config_notifier_fd_handler(vdev, false, true); + virtio_set_notifier_fd_handler(vdev, -1, false, true); kvm_virtio_pci_vector_config_release(proxy); event_notifier_cleanup(notifier); } @@ -1005,9 +1005,9 @@ static int virtio_pci_set_guest_notifier(DeviceState = *d, int n, bool assign, if (r < 0) { return r; } - virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); + virtio_set_notifier_fd_handler(vdev, n, true, with_irqfd); } else { - virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); + virtio_set_notifier_fd_handler(vdev, n, false, with_irqfd); event_notifier_cleanup(notifier); } =20 @@ -1049,6 +1049,7 @@ static int virtio_pci_set_guest_notifiers(DeviceState= *d, int nvqs, bool assign) msix_unset_vector_notifiers(&proxy->pci_dev); if (proxy->vector_irqfd) { kvm_virtio_pci_vector_release(proxy, nvqs); + kvm_virtio_pci_vector_config_release(proxy); g_free(proxy->vector_irqfd); proxy->vector_irqfd =3D NULL; } diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 5dff29c981..8f0087deac 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -3510,32 +3510,31 @@ static void virtio_config_read(EventNotifier *n) virtio_notify_config(vdev); } } -void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign, - bool with_irqfd) + +void virtio_set_notifier_fd_handler(VirtIODevice *vdev, int queue_no, + bool assign, bool with_irqfd) { - if (assign && !with_irqfd) { - event_notifier_set_handler(&vq->guest_notifier, - virtio_queue_guest_notifier_read); + EventNotifier *e ; + EventNotifierHandler *handler; + if (queue_no !=3D -1) { + VirtQueue *vq =3D virtio_get_queue(vdev, queue_no); + e =3D &vq->guest_notifier; + handler =3D virtio_queue_guest_notifier_read; + } else { + e =3D &vdev->config_notifier; + handler =3D virtio_config_read; + } + if (assign && !with_irqfd) { + event_notifier_set_handler(e, handler); } else { - event_notifier_set_handler(&vq->guest_notifier, NULL); + event_notifier_set_handler(e, NULL); } if (!assign) { /* Test and clear notifier before closing it, * in case poll callback didn't have time to run. */ - virtio_queue_guest_notifier_read(&vq->guest_notifier); + handler(e); } } -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_config_read); - } else { - event_notifier_set_handler(&vdev->config_notifier, NULL); - } -} - EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq) { return &vq->guest_notifier; diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index b0b714f6d4..d22f5a3e7e 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -309,9 +309,7 @@ void virtio_queue_update_used_idx(VirtIODevice *vdev, i= nt n); VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n); 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, +void virtio_set_notifier_fd_handler(VirtIODevice *vdev, int n, bool assign, bool with_irqfd); int virtio_device_start_ioeventfd(VirtIODevice *vdev); int virtio_device_grab_ioeventfd(VirtIODevice *vdev); --=20 2.21.3