From patchwork Wed Jun 29 06:56:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 12899438 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 44D0DCCA47F for ; Wed, 29 Jun 2022 06:57:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232716AbiF2G5u (ORCPT ); Wed, 29 Jun 2022 02:57:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37138 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232596AbiF2G5d (ORCPT ); Wed, 29 Jun 2022 02:57:33 -0400 Received: from out30-132.freemail.mail.aliyun.com (out30-132.freemail.mail.aliyun.com [115.124.30.132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 467F22F02D; Tue, 28 Jun 2022 23:57:32 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R211e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046059;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=37;SR=0;TI=SMTPD_---0VHml8-Z_1656485844; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0VHml8-Z_1656485844) by smtp.aliyun-inc.com; Wed, 29 Jun 2022 14:57:25 +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 13/40] virtio_ring: split: reserve vring_align, may_reduce_num Date: Wed, 29 Jun 2022 14:56:29 +0800 Message-Id: <20220629065656.54420-14-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 In vring_create_virtqueue_split() save vring_align, may_reduce_num to structure vring_virtqueue_split. Used to create a new vring when implementing resize . Signed-off-by: Xuan Zhuo Acked-by: Jason Wang --- drivers/virtio/virtio_ring.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 4c8972da5423..9c83c5e6d5a9 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -105,6 +105,13 @@ struct vring_virtqueue_split { /* DMA address and size information */ dma_addr_t queue_dma_addr; size_t queue_size_in_bytes; + + /* + * The parameters for creating vrings are reserved for creating new + * vring. + */ + u32 vring_align; + bool may_reduce_num; }; struct vring_virtqueue_packed { @@ -1098,6 +1105,8 @@ static struct virtqueue *vring_create_virtqueue_split( return NULL; } + to_vvq(vq)->split.vring_align = vring_align; + to_vvq(vq)->split.may_reduce_num = may_reduce_num; to_vvq(vq)->split.queue_dma_addr = vring.queue_dma_addr; to_vvq(vq)->split.queue_size_in_bytes = vring.queue_size_in_bytes; to_vvq(vq)->we_own_ring = true;