From patchwork Mon Aug 1 06:38:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 12933493 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DE3C3C25B06 for ; Mon, 1 Aug 2022 06:41:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233546AbiHAGlJ (ORCPT ); Mon, 1 Aug 2022 02:41:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33802 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230377AbiHAGka (ORCPT ); Mon, 1 Aug 2022 02:40:30 -0400 Received: from out30-44.freemail.mail.aliyun.com (out30-44.freemail.mail.aliyun.com [115.124.30.44]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D092C15823; Sun, 31 Jul 2022 23:39:51 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R171e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046051;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=37;SR=0;TI=SMTPD_---0VL1srx9_1659335983; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0VL1srx9_1659335983) by smtp.aliyun-inc.com; Mon, 01 Aug 2022 14:39:44 +0800 From: Xuan Zhuo To: virtualization@lists.linux-foundation.org Cc: Richard Weinberger , Anton Ivanov , Johannes Berg , "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Hans de Goede , Mark Gross , Vadim Pasternak , Bjorn Andersson , Mathieu Poirier , Cornelia Huck , Halil Pasic , Eric Farman , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Xuan Zhuo , Vincent Whitchurch , 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 21/42] virtio_ring: packed: extract the logic of attach vring Date: Mon, 1 Aug 2022 14:38:41 +0800 Message-Id: <20220801063902.129329-22-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20220801063902.129329-1-xuanzhuo@linux.alibaba.com> References: <20220801063902.129329-1-xuanzhuo@linux.alibaba.com> MIME-Version: 1.0 X-Git-Hash: 0f12e405b061 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Separate the logic of attach vring, the subsequent patch will call it separately. Signed-off-by: Xuan Zhuo Acked-by: Jason Wang --- drivers/virtio/virtio_ring.c | 25 ++++++++++--------------- 1 file changed, 10 insertions(+), 15 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index a6f90e6e621b..93d2a950f536 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -1948,6 +1948,15 @@ static void virtqueue_vring_init_packed(struct vring_virtqueue_packed *vring_pac } } +static void virtqueue_vring_attach_packed(struct vring_virtqueue *vq, + struct vring_virtqueue_packed *vring_packed) +{ + vq->packed = *vring_packed; + + /* Put everything in free lists. */ + vq->free_head = 0; +} + static struct virtqueue *vring_create_virtqueue_packed( unsigned int index, unsigned int num, @@ -1993,28 +2002,14 @@ static struct virtqueue *vring_create_virtqueue_packed( if (virtio_has_feature(vdev, VIRTIO_F_ORDER_PLATFORM)) vq->weak_barriers = false; - vq->packed.ring_dma_addr = vring_packed.ring_dma_addr; - vq->packed.driver_event_dma_addr = vring_packed.driver_event_dma_addr; - vq->packed.device_event_dma_addr = vring_packed.device_event_dma_addr; - - vq->packed.ring_size_in_bytes = vring_packed.ring_size_in_bytes; - vq->packed.event_size_in_bytes = vring_packed.event_size_in_bytes; - - vq->packed.vring = vring_packed.vring; - err = vring_alloc_state_extra_packed(&vring_packed); if (err) goto err_state_extra; - /* Put everything in free lists. */ - vq->free_head = 0; - - vq->packed.desc_state = vring_packed.desc_state; - vq->packed.desc_extra = vring_packed.desc_extra; - virtqueue_vring_init_packed(&vring_packed, !!callback); virtqueue_init(vq, num); + virtqueue_vring_attach_packed(vq, &vring_packed); spin_lock(&vdev->vqs_list_lock); list_add_tail(&vq->vq.list, &vdev->vqs);