From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
To: virtualization@lists.linux-foundation.org
Cc: Richard Weinberger <richard@nod.at>,
Anton Ivanov <anton.ivanov@cambridgegreys.com>,
Johannes Berg <johannes@sipsolutions.net>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Hans de Goede <hdegoede@redhat.com>,
Mark Gross <markgross@kernel.org>,
Vadim Pasternak <vadimp@nvidia.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Cornelia Huck <cohuck@redhat.com>,
Halil Pasic <pasic@linux.ibm.com>,
Eric Farman <farman@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jesper Dangaard Brouer <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Xuan Zhuo <xuanzhuo@linux.alibaba.com>,
Vincent Whitchurch <vincent.whitchurch@axis.com>,
linux-um@lists.infradead.org, netdev@vger.kernel.org,
platform-driver-x86@vger.kernel.org,
linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org,
kvm@vger.kernel.org, bpf@vger.kernel.org,
kangjie.xu@linux.alibaba.com
Subject: [PATCH v14 22/42] virtio_ring: packed: introduce virtqueue_reinit_packed()
Date: Mon, 1 Aug 2022 14:38:42 +0800 [thread overview]
Message-ID: <20220801063902.129329-23-xuanzhuo@linux.alibaba.com> (raw)
In-Reply-To: <20220801063902.129329-1-xuanzhuo@linux.alibaba.com>
Introduce a function to initialize vq without allocating new ring,
desc_state, desc_extra.
Subsequent patches will call this function after reset vq to
reinitialize vq.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
---
drivers/virtio/virtio_ring.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 93d2a950f536..db06fb0ddfd6 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -1957,6 +1957,18 @@ static void virtqueue_vring_attach_packed(struct vring_virtqueue *vq,
vq->free_head = 0;
}
+static void virtqueue_reinit_packed(struct vring_virtqueue *vq)
+{
+ memset(vq->packed.vring.device, 0, vq->packed.event_size_in_bytes);
+ memset(vq->packed.vring.driver, 0, vq->packed.event_size_in_bytes);
+
+ /* we need to reset the desc.flags. For more, see is_used_desc_packed() */
+ memset(vq->packed.vring.desc, 0, vq->packed.ring_size_in_bytes);
+
+ virtqueue_init(vq, vq->packed.vring.num);
+ virtqueue_vring_init_packed(&vq->packed, !!vq->vq.callback);
+}
+
static struct virtqueue *vring_create_virtqueue_packed(
unsigned int index,
unsigned int num,
--
2.31.0
next prev parent reply other threads:[~2022-08-01 6:41 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-01 6:38 [PATCH v14 00/42] virtio pci support VIRTIO_F_RING_RESET Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 01/42] virtio: record the maximum queue num supported by the device Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 02/42] virtio: struct virtio_config_ops add callbacks for queue_reset Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 03/42] virtio_ring: update the document of the virtqueue_detach_unused_buf for queue reset Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 04/42] virtio_ring: extract the logic of freeing vring Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 05/42] virtio_ring: split vring_virtqueue Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 06/42] virtio_ring: introduce virtqueue_init() Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 07/42] virtio_ring: split: stop __vring_new_virtqueue as export symbol Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 08/42] virtio_ring: split: __vring_new_virtqueue() accept struct vring_virtqueue_split Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 09/42] virtio_ring: split: introduce vring_free_split() Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 10/42] virtio_ring: split: extract the logic of alloc queue Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 11/42] virtio_ring: split: extract the logic of alloc state and extra Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 12/42] virtio_ring: split: extract the logic of vring init Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 13/42] virtio_ring: split: extract the logic of attach vring Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 14/42] virtio_ring: split: introduce virtqueue_reinit_split() Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 15/42] virtio_ring: split: reserve vring_align, may_reduce_num Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 16/42] virtio_ring: split: introduce virtqueue_resize_split() Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 17/42] virtio_ring: packed: introduce vring_free_packed Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 18/42] virtio_ring: packed: extract the logic of alloc queue Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 19/42] virtio_ring: packed: extract the logic of alloc state and extra Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 20/42] virtio_ring: packed: extract the logic of vring init Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 21/42] virtio_ring: packed: extract the logic of attach vring Xuan Zhuo
2022-08-01 6:38 ` Xuan Zhuo [this message]
2022-08-01 6:38 ` [PATCH v14 23/42] virtio_ring: packed: introduce virtqueue_resize_packed() Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 24/42] virtio_ring: introduce virtqueue_resize() Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 25/42] virtio_pci: struct virtio_pci_common_cfg add queue_notify_data Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 26/42] virtio: allow to unbreak/break virtqueue individually Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 27/42] virtio: queue_reset: add VIRTIO_F_RING_RESET Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 28/42] virtio_ring: struct virtqueue introduce reset Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 29/42] virtio_pci: struct virtio_pci_common_cfg add queue_reset Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 30/42] virtio_pci: introduce helper to get/set queue reset Xuan Zhuo
2022-08-15 6:07 ` Michael S. Tsirkin
2023-09-21 14:02 ` Michael S. Tsirkin
2023-09-22 1:49 ` Xuan Zhuo
2023-09-22 10:46 ` Michael S. Tsirkin
2023-09-25 2:02 ` Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 31/42] virtio_pci: extract the logic of active vq for modern pci Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 32/42] virtio_pci: support VIRTIO_F_RING_RESET Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 33/42] virtio: find_vqs() add arg sizes Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 34/42] virtio_pci: support the arg sizes of find_vqs() Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 35/42] virtio_mmio: " Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 36/42] virtio: add helper virtio_find_vqs_ctx_size() Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 37/42] virtio_net: set the default max ring size by find_vqs() Xuan Zhuo
2022-08-15 6:00 ` Michael S. Tsirkin
2022-08-15 6:35 ` Xuan Zhuo
2022-08-15 7:14 ` Michael S. Tsirkin
2022-08-15 7:28 ` Xuan Zhuo
2022-08-15 7:39 ` Michael S. Tsirkin
2022-08-01 6:38 ` [PATCH v14 38/42] virtio_net: get ringparam by virtqueue_get_vring_max_size() Xuan Zhuo
2022-08-01 6:38 ` [PATCH v14 39/42] virtio_net: split free_unused_bufs() Xuan Zhuo
2022-08-01 6:39 ` [PATCH v14 40/42] virtio_net: support rx queue resize Xuan Zhuo
2022-08-01 6:39 ` [PATCH v14 41/42] virtio_net: support tx " Xuan Zhuo
2022-08-01 6:39 ` [PATCH v14 42/42] virtio_net: support set_ringparam Xuan Zhuo
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