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Mon, 22 Mar 2021 21:56:57 -0400 X-MC-Unique: Zl9LiY_NMgGqHIEueqWw3Q-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C65CC81744F for ; Tue, 23 Mar 2021 01:56:56 +0000 (UTC) Received: from laptop.redhat.com (ovpn-12-88.pek2.redhat.com [10.72.12.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id D4A3E62A6F; Tue, 23 Mar 2021 01:56:54 +0000 (UTC) From: Cindy Lu To: lulu@redhat.com, mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH v4 1/4] virtio:add support in configure interrupt Date: Tue, 23 Mar 2021 09:56:38 +0800 Message-Id: <20210323015641.10820-2-lulu@redhat.com> In-Reply-To: <20210323015641.10820-1-lulu@redhat.com> References: <20210323015641.10820-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 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 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_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+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Add configure notifier support in virtio and related driver When peer is vhost vdpa, setup the configure interrupt function vhost_net_start and release the resource when vhost_net_stop Signed-off-by: Cindy Lu --- hw/display/vhost-user-gpu.c | 14 +++++++---- hw/net/vhost_net.c | 16 +++++++++++-- hw/net/virtio-net.c | 24 +++++++++++++++---- hw/s390x/virtio-ccw.c | 6 ++--- hw/virtio/vhost-user-fs.c | 12 ++++++---- hw/virtio/vhost-vsock-common.c | 12 ++++++---- hw/virtio/vhost.c | 44 ++++++++++++++++++++++++++++++++-- hw/virtio/virtio-crypto.c | 13 ++++++---- hw/virtio/virtio.c | 28 ++++++++++++++++++++++ include/hw/virtio/vhost.h | 4 ++++ include/hw/virtio/virtio.h | 23 ++++++++++++++++-- include/net/vhost_net.h | 3 +++ 12 files changed, 169 insertions(+), 30 deletions(-) diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c index 51f1747c4a..959ad115b6 100644 --- a/hw/display/vhost-user-gpu.c +++ b/hw/display/vhost-user-gpu.c @@ -487,18 +487,24 @@ vhost_user_gpu_set_status(VirtIODevice *vdev, uint8_t val) } static bool -vhost_user_gpu_guest_notifier_pending(VirtIODevice *vdev, int idx) +vhost_user_gpu_guest_notifier_pending(VirtIODevice *vdev, int idx, + int type) { VhostUserGPU *g = VHOST_USER_GPU(vdev); - + if (type != VIRTIO_VQ_VECTOR) { + return false; + } return vhost_virtqueue_pending(&g->vhost->dev, idx); } static void -vhost_user_gpu_guest_notifier_mask(VirtIODevice *vdev, int idx, bool mask) +vhost_user_gpu_guest_notifier_mask(VirtIODevice *vdev, int idx, bool mask, + int type) { VhostUserGPU *g = VHOST_USER_GPU(vdev); - + if (type != VIRTIO_VQ_VECTOR) { + return; + } vhost_virtqueue_mask(&g->vhost->dev, vdev, idx, mask); } diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index 24d555e764..2ef8cc608e 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -339,7 +339,9 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, dev->use_guest_notifier_mask = false; } } - + if (ncs->peer && ncs->peer->info->type == NET_CLIENT_DRIVER_VHOST_VDPA) { + dev->use_config_notifier = VIRTIO_CONFIG_SUPPORT; + } r = k->set_guest_notifiers(qbus->parent, total_queues * 2, true); if (r < 0) { error_report("Error binding guest notifier: %d", -r); @@ -391,7 +393,6 @@ void vhost_net_stop(VirtIODevice *dev, NetClientState *ncs, for (i = 0; i < total_queues; i++) { vhost_net_stop_one(get_vhost_net(ncs[i].peer), dev); } - r = k->set_guest_notifiers(qbus->parent, total_queues * 2, false); if (r < 0) { fprintf(stderr, "vhost guest notifier cleanup failed: %d\n", r); @@ -426,6 +427,17 @@ void vhost_net_virtqueue_mask(VHostNetState *net, VirtIODevice *dev, vhost_virtqueue_mask(&net->dev, dev, idx, mask); } +bool vhost_net_config_pending(VHostNetState *net, int idx) +{ + return vhost_config_pending(&net->dev, idx); +} + +void vhost_net_config_mask(VHostNetState *net, VirtIODevice *dev, + bool mask) +{ + vhost_config_mask(&net->dev, dev, mask); +} + VHostNetState *get_vhost_net(NetClientState *nc) { VHostNetState *vhost_net = 0; diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 9179013ac4..b84427fe99 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3055,22 +3055,36 @@ static NetClientInfo net_virtio_info = { .announce = virtio_net_announce, }; -static bool virtio_net_guest_notifier_pending(VirtIODevice *vdev, int idx) + +static bool virtio_net_guest_notifier_pending(VirtIODevice *vdev, int idx, + int type) { VirtIONet *n = VIRTIO_NET(vdev); NetClientState *nc = qemu_get_subqueue(n->nic, vq2q(idx)); assert(n->vhost_started); - return vhost_net_virtqueue_pending(get_vhost_net(nc->peer), idx); + + if (type == VIRTIO_VQ_VECTOR) { + return vhost_net_virtqueue_pending(get_vhost_net(nc->peer), idx); + } + if (type == VIRTIO_CONFIG_VECTOR) { + return vhost_net_config_pending(get_vhost_net(nc->peer), idx); + } + return false; } static void virtio_net_guest_notifier_mask(VirtIODevice *vdev, int idx, - bool mask) + bool mask, int type) { VirtIONet *n = VIRTIO_NET(vdev); NetClientState *nc = qemu_get_subqueue(n->nic, vq2q(idx)); assert(n->vhost_started); - vhost_net_virtqueue_mask(get_vhost_net(nc->peer), - vdev, idx, mask); + + if (type == VIRTIO_VQ_VECTOR) { + vhost_net_virtqueue_mask(get_vhost_net(nc->peer), vdev, idx, mask); + } + if (type == VIRTIO_CONFIG_VECTOR) { + vhost_net_config_mask(get_vhost_net(nc->peer), vdev, mask); + } } static void virtio_net_set_config_size(VirtIONet *n, uint64_t host_features) diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 4582e94ae7..234f749548 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -1003,16 +1003,16 @@ static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n, * need to manually trigger any guest masking callbacks here. */ if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) { - k->guest_notifier_mask(vdev, n, false); + k->guest_notifier_mask(vdev, n, false, VIRTIO_VQ_VECTOR); } /* get lost events and re-inject */ if (k->guest_notifier_pending && - k->guest_notifier_pending(vdev, n)) { + k->guest_notifier_pending(vdev, n, VIRTIO_VQ_VECTOR)) { event_notifier_set(notifier); } } else { if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) { - k->guest_notifier_mask(vdev, n, true); + k->guest_notifier_mask(vdev, n, true, VIRTIO_VQ_VECTOR); } if (with_irqfd) { virtio_ccw_remove_irqfd(dev, n); diff --git a/hw/virtio/vhost-user-fs.c b/hw/virtio/vhost-user-fs.c index 1bc5d03a00..22358767f1 100644 --- a/hw/virtio/vhost-user-fs.c +++ b/hw/virtio/vhost-user-fs.c @@ -143,17 +143,21 @@ static void vuf_handle_output(VirtIODevice *vdev, VirtQueue *vq) } static void vuf_guest_notifier_mask(VirtIODevice *vdev, int idx, - bool mask) + bool mask, int type) { VHostUserFS *fs = VHOST_USER_FS(vdev); - + if (type != VIRTIO_VQ_VECTOR) { + return; + } vhost_virtqueue_mask(&fs->vhost_dev, vdev, idx, mask); } -static bool vuf_guest_notifier_pending(VirtIODevice *vdev, int idx) +static bool vuf_guest_notifier_pending(VirtIODevice *vdev, int idx, int type) { VHostUserFS *fs = VHOST_USER_FS(vdev); - + if (type != VIRTIO_VQ_VECTOR) { + return false; + } return vhost_virtqueue_pending(&fs->vhost_dev, idx); } diff --git a/hw/virtio/vhost-vsock-common.c b/hw/virtio/vhost-vsock-common.c index 5b2ebf3496..92c133c54c 100644 --- a/hw/virtio/vhost-vsock-common.c +++ b/hw/virtio/vhost-vsock-common.c @@ -97,18 +97,22 @@ static void vhost_vsock_common_handle_output(VirtIODevice *vdev, VirtQueue *vq) } static void vhost_vsock_common_guest_notifier_mask(VirtIODevice *vdev, int idx, - bool mask) + bool mask, int type) { VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); - + if (type != VIRTIO_VQ_VECTOR) { + return; + } vhost_virtqueue_mask(&vvc->vhost_dev, vdev, idx, mask); } static bool vhost_vsock_common_guest_notifier_pending(VirtIODevice *vdev, - int idx) + int idx, int type) { VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev); - + if (type != VIRTIO_VQ_VECTOR) { + return false; + } return vhost_virtqueue_pending(&vvc->vhost_dev, idx); } diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 614ccc2bcb..02e4d37dc0 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1255,8 +1255,8 @@ static int vhost_virtqueue_init(struct vhost_dev *dev, if (r < 0) { return r; } - file.fd = event_notifier_get_fd(&vq->masked_notifier); + r = dev->vhost_ops->vhost_set_vring_call(dev, &file); if (r) { VHOST_OPS_DEBUG("vhost_set_vring_call failed"); @@ -1313,6 +1313,10 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaque, goto fail; } } + r = event_notifier_init(&hdev->masked_config_notifier, 0); + if (r < 0) { + return r; + } if (busyloop_timeout) { for (i = 0; i < hdev->nvqs; ++i) { @@ -1405,6 +1409,8 @@ void vhost_dev_cleanup(struct vhost_dev *hdev) for (i = 0; i < hdev->nvqs; ++i) { vhost_virtqueue_cleanup(hdev->vqs + i); } + event_notifier_cleanup(&hdev->masked_config_notifier); + if (hdev->mem) { /* those are only safe after successful init */ memory_listener_unregister(&hdev->memory_listener); @@ -1498,6 +1504,10 @@ bool vhost_virtqueue_pending(struct vhost_dev *hdev, int n) return event_notifier_test_and_clear(&vq->masked_notifier); } +bool vhost_config_pending(struct vhost_dev *hdev, int n) +{ + return event_notifier_test_and_clear(&hdev->masked_config_notifier); +} /* Mask/unmask events from this vq. */ void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n, bool mask) @@ -1523,6 +1533,31 @@ void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n, } } +/* Mask/unmask events from this config. */ +void vhost_config_mask(struct vhost_dev *hdev, VirtIODevice *vdev, + bool mask) +{ + int fd; + int r; + EventNotifier *masked_config_notifier = &hdev->masked_config_notifier; + EventNotifier *config_notifier = &vdev->config_notifier; + if (vdev->use_config_notifier != VIRTIO_CONFIG_WORK) { + return; + } + /* should only be called after backend is connected */ + assert(hdev->vhost_ops); + if (mask) { + assert(vdev->use_guest_notifier_mask); + fd = event_notifier_get_fd(masked_config_notifier); + } else { + fd = event_notifier_get_fd(config_notifier); + } + r = hdev->vhost_ops->vhost_set_config_call(hdev, &fd); + if (r < 0) { + error_report("vhost_set_config_call failed"); + } +} + uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bits, uint64_t features) { @@ -1732,7 +1767,12 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev) goto fail_vq; } } - + if (vdev->use_config_notifier == VIRTIO_CONFIG_WORK) { + event_notifier_test_and_clear(&hdev->masked_config_notifier); + if (!vdev->use_guest_notifier_mask) { + vhost_config_mask(hdev, vdev, false); + } + } if (hdev->log_enabled) { uint64_t log_base; diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c index 54f9bbb789..ab7958465c 100644 --- a/hw/virtio/virtio-crypto.c +++ b/hw/virtio/virtio-crypto.c @@ -941,23 +941,28 @@ static void virtio_crypto_set_status(VirtIODevice *vdev, uint8_t status) } static void virtio_crypto_guest_notifier_mask(VirtIODevice *vdev, int idx, - bool mask) + bool mask, int type) { VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); int queue = virtio_crypto_vq2q(idx); assert(vcrypto->vhost_started); - + if (type != VIRTIO_VQ_VECTOR) { + return; + } cryptodev_vhost_virtqueue_mask(vdev, queue, idx, mask); } -static bool virtio_crypto_guest_notifier_pending(VirtIODevice *vdev, int idx) +static bool virtio_crypto_guest_notifier_pending(VirtIODevice *vdev, int idx, + int type) { VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); int queue = virtio_crypto_vq2q(idx); assert(vcrypto->vhost_started); - + if (type != VIRTIO_VQ_VECTOR) { + return false; + } return cryptodev_vhost_virtqueue_pending(vdev, queue, idx); } diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index ceb58fda6c..7d1a68c87a 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -3278,6 +3278,8 @@ void virtio_init(VirtIODevice *vdev, const char *name, virtio_vmstate_change, vdev); vdev->device_endian = virtio_default_endian(); vdev->use_guest_notifier_mask = true; + vdev->use_config_notifier = VIRTIO_CONFIG_STATUS_UNKNOWN; + } /* @@ -3502,6 +3504,16 @@ static void virtio_queue_guest_notifier_read(EventNotifier *n) } } +static void virtio_config_read(EventNotifier *n) +{ + VirtIODevice *vdev = container_of(n, VirtIODevice, config_notifier); + if (vdev->use_config_notifier != VIRTIO_CONFIG_WORK) { + return; + } + 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 +3530,17 @@ void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign, } } +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; @@ -3591,6 +3614,11 @@ EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq) return &vq->host_notifier; } +EventNotifier *virtio_get_config_notifier(VirtIODevice *vdev) +{ + return &vdev->config_notifier; + +} void virtio_queue_set_host_notifier_enabled(VirtQueue *vq, bool enabled) { vq->host_notifier_enabled = enabled; diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index 4a8bc75415..75bbc1a4fa 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -91,6 +91,8 @@ struct vhost_dev { QLIST_HEAD(, vhost_iommu) iommu_list; IOMMUNotifier n; const VhostDevConfigOps *config_ops; + EventNotifier masked_config_notifier; + }; struct vhost_net { @@ -108,6 +110,8 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev); void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev); int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev); void vhost_dev_disable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev); +bool vhost_config_pending(struct vhost_dev *hdev, int n); +void vhost_config_mask(struct vhost_dev *hdev, VirtIODevice *vdev, bool mask); /* Test and clear masked event pending status. * Should be called after unmask to avoid losing events. diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index b7ece7a6a8..24e5bfae61 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -67,6 +67,19 @@ typedef struct VirtQueueElement #define VIRTIO_NO_VECTOR 0xffff +enum virtio_vector_type { + VIRTIO_VQ_VECTOR, + VIRTIO_CONFIG_VECTOR, + VIRTIO_VECTOR_UNKNOWN, +}; + +enum virtio_config_status { + VIRTIO_CONFIG_SUPPORT, + VIRTIO_CONFIG_WORK, + VIRTIO_CONFIG_STOP, + VIRTIO_CONFIG_STATUS_UNKNOWN, +}; + #define TYPE_VIRTIO_DEVICE "virtio-device" OBJECT_DECLARE_TYPE(VirtIODevice, VirtioDeviceClass, VIRTIO_DEVICE) @@ -108,6 +121,8 @@ struct VirtIODevice bool use_guest_notifier_mask; AddressSpace *dma_as; QLIST_HEAD(, VirtQueue) *vector_queues; + EventNotifier config_notifier; + enum virtio_config_status use_config_notifier; }; struct VirtioDeviceClass { @@ -138,13 +153,13 @@ struct VirtioDeviceClass { * If backend does not support masking, * must check in frontend instead. */ - bool (*guest_notifier_pending)(VirtIODevice *vdev, int n); + bool (*guest_notifier_pending)(VirtIODevice *vdev, int n, int type); /* Mask/unmask events from this vq. Any events reported * while masked will become pending. * If backend does not support masking, * must mask in frontend instead. */ - void (*guest_notifier_mask)(VirtIODevice *vdev, int n, bool mask); + void (*guest_notifier_mask)(VirtIODevice *vdev, int n, bool mask, int type); int (*start_ioeventfd)(VirtIODevice *vdev); void (*stop_ioeventfd)(VirtIODevice *vdev); /* Saving and loading of a device; trying to deprecate save/load @@ -310,11 +325,15 @@ 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_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, diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h index 172b0051d8..0d38c97c94 100644 --- a/include/net/vhost_net.h +++ b/include/net/vhost_net.h @@ -36,6 +36,9 @@ int vhost_net_set_config(struct vhost_net *net, const uint8_t *data, bool vhost_net_virtqueue_pending(VHostNetState *net, int n); void vhost_net_virtqueue_mask(VHostNetState *net, VirtIODevice *dev, int idx, bool mask); +bool vhost_net_config_pending(VHostNetState *net, int n); +void vhost_net_config_mask(VHostNetState *net, VirtIODevice *dev, + bool mask); int vhost_net_notify_migration_done(VHostNetState *net, char* mac_addr); VHostNetState *get_vhost_net(NetClientState *nc);