From patchwork Wed Jul 20 03:04:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 12923383 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 5841BCCA486 for ; Wed, 20 Jul 2022 03:07:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241080AbiGTDHp (ORCPT ); Tue, 19 Jul 2022 23:07:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38440 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240937AbiGTDGk (ORCPT ); Tue, 19 Jul 2022 23:06:40 -0400 Received: from out30-45.freemail.mail.aliyun.com (out30-45.freemail.mail.aliyun.com [115.124.30.45]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D5BC70E43; Tue, 19 Jul 2022 20:05:28 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R111e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04400;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=37;SR=0;TI=SMTPD_---0VJuvIdk_1658286319; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0VJuvIdk_1658286319) by smtp.aliyun-inc.com; Wed, 20 Jul 2022 11:05:20 +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 v12 18/40] virtio_ring: packed: extract the logic of attach vring Date: Wed, 20 Jul 2022 11:04:14 +0800 Message-Id: <20220720030436.79520-19-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20220720030436.79520-1-xuanzhuo@linux.alibaba.com> References: <20220720030436.79520-1-xuanzhuo@linux.alibaba.com> MIME-Version: 1.0 X-Git-Hash: 366032b2ffac 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 --- drivers/virtio/virtio_ring.c | 29 +++++++++++++++++------------ 1 file changed, 17 insertions(+), 12 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 1f8d6417b46a..19ed20d7d433 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -1932,6 +1932,22 @@ static int vring_alloc_state_extra_packed(struct vring_virtqueue_packed *vring_p return -ENOMEM; } +static void virtqueue_vring_attach_packed(struct vring_virtqueue *vq, + struct vring_virtqueue_packed *vring_packed) +{ + 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; + + vq->packed.desc_state = vring_packed->desc_state; + vq->packed.desc_extra = vring_packed->desc_extra; +} + static struct virtqueue *vring_create_virtqueue_packed( unsigned int index, unsigned int num, @@ -1972,15 +1988,6 @@ static struct virtqueue *vring_create_virtqueue_packed( vq->indirect = virtio_has_feature(vdev, VIRTIO_RING_F_INDIRECT_DESC) && !context; - 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; - vq->packed.next_avail_idx = 0; vq->packed.avail_wrap_counter = 1; vq->packed.event_flags_shadow = 0; @@ -1990,10 +1997,8 @@ static struct virtqueue *vring_create_virtqueue_packed( if (err) goto err_state_extra; - vq->packed.desc_state = vring.desc_state; - vq->packed.desc_extra = vring.desc_extra; - virtqueue_init(vq, num); + virtqueue_vring_attach_packed(vq, &vring_packed); /* No callback? Tell other side not to bother us. */ if (!callback) {