From patchwork Wed Jun 29 06:56:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 12899446 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 D5EFFCCA486 for ; Wed, 29 Jun 2022 06:58:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232733AbiF2G65 (ORCPT ); Wed, 29 Jun 2022 02:58:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232698AbiF2G5s (ORCPT ); Wed, 29 Jun 2022 02:57:48 -0400 Received: from out199-13.us.a.mail.aliyun.com (out199-13.us.a.mail.aliyun.com [47.90.199.13]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 58736326E9; Tue, 28 Jun 2022 23:57:43 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R321e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046060;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=37;SR=0;TI=SMTPD_---0VHmddjZ_1656485855; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0VHmddjZ_1656485855) by smtp.aliyun-inc.com; Wed, 29 Jun 2022 14:57:36 +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 v11 18/40] virtio_ring: packed: extract the logic of attach vring Date: Wed, 29 Jun 2022 14:56:34 +0800 Message-Id: <20220629065656.54420-19-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20220629065656.54420-1-xuanzhuo@linux.alibaba.com> References: <20220629065656.54420-1-xuanzhuo@linux.alibaba.com> MIME-Version: 1.0 X-Git-Hash: 3fdaf102dd89 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 0c4109eb6c6c..91ac99f99bff 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -1929,6 +1929,22 @@ static int vring_alloc_state_extra_packed(struct vring_virtqueue_packed *vring) return -ENOMEM; } +static void virtqueue_vring_attach_packed(struct vring_virtqueue *vq, + struct vring_virtqueue_packed *vring) +{ + vq->packed.ring_dma_addr = vring->ring_dma_addr; + vq->packed.driver_event_dma_addr = vring->driver_event_dma_addr; + vq->packed.device_event_dma_addr = vring->device_event_dma_addr; + + vq->packed.ring_size_in_bytes = vring->ring_size_in_bytes; + vq->packed.event_size_in_bytes = vring->event_size_in_bytes; + + vq->packed.vring = vring->vring; + + vq->packed.desc_state = vring->desc_state; + vq->packed.desc_extra = vring->desc_extra; +} + static struct virtqueue *vring_create_virtqueue_packed( unsigned int index, unsigned int num, @@ -1969,15 +1985,6 @@ 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.ring_dma_addr; - vq->packed.driver_event_dma_addr = vring.driver_event_dma_addr; - vq->packed.device_event_dma_addr = vring.device_event_dma_addr; - - vq->packed.ring_size_in_bytes = vring.ring_size_in_bytes; - vq->packed.event_size_in_bytes = vring.event_size_in_bytes; - - vq->packed.vring = vring.vring; - vq->packed.next_avail_idx = 0; vq->packed.avail_wrap_counter = 1; vq->packed.event_flags_shadow = 0; @@ -1987,10 +1994,8 @@ 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); /* No callback? Tell other side not to bother us. */ if (!callback) {