From mboxrd@z Thu Jan 1 00:00:00 1970 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 CE6EFC433EF for ; Fri, 1 Jul 2022 09:03:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231955AbiGAJDm (ORCPT ); Fri, 1 Jul 2022 05:03:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235168AbiGAJDi (ORCPT ); Fri, 1 Jul 2022 05:03:38 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 9EF0D2CE3B for ; Fri, 1 Jul 2022 02:03:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1656666215; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=D1b6P6ndaF684cAO7Vh4K15FYuoIpDfb/buQv2cS9+s=; b=cwAib/SVcSnosIT6Qru3ZdypKl2x87gVyu/iczePVPCHgqMoqU17FnPOXu9CJ40N7DfNeE UG08uHrs8JotRxb2XgSyKIGWcsU8kOt1cNjaoscMrNurejgtME0JK4BK2hNfH4uAsCSUlw V5ihda7IAKjpJcVkC1z3fvyQrVKyZGk= Received: from mail-pl1-f199.google.com (mail-pl1-f199.google.com [209.85.214.199]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-479-7SqPgskYO-G9UK_4kRiQKw-1; Fri, 01 Jul 2022 05:03:34 -0400 X-MC-Unique: 7SqPgskYO-G9UK_4kRiQKw-1 Received: by mail-pl1-f199.google.com with SMTP id u14-20020a17090341ce00b0016a38ec073aso1166356ple.21 for ; Fri, 01 Jul 2022 02:03:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=D1b6P6ndaF684cAO7Vh4K15FYuoIpDfb/buQv2cS9+s=; b=cL2t+MCV5+uyUgxA0vlJ2gyPeAPr9cJRgL2NzDLlRwe8/hArE6IfM8t7SeKysD1SrR SfVUyZ0ZMyz53Rp7HDeCQ9t+GBGmQ1zzxn6wiDB3WLparnPD4wNN8Yg9lAjt0L1gF5ys 4jP0HJPfKdLOxKvqLddOsWSYXzkxe5FPWvDRfx/uKyq7xIhDnA0J2CyalvtKxU+weJdE /FTMIF8eADXWUfgAtvb9/BcFlABm5rTjQQCRBxN8wjlnRH1ylSfV4CCiRviYewWmFYcU L632AxqbjZ/zt3EedykBrw33bzdtzTaG2LGuHrF61DtzM7bkiwWbVrtWAehQWjfyUfCl fPAw== X-Gm-Message-State: AJIora/OHa4p5KlHMDLBbPWxlOwy3SiSG5EAINOwOsXUii26bo0KvhfZ 7G3DMTxYb0IlDy5XYO/pCtKD0JqespJZCsExTgFBBTvM2JzcL2frGdHhYSC1iaLQxGmy9CUaYwY 5OUg28iOO6VnXgYxk+Bb9nw== X-Received: by 2002:a17:903:18c:b0:16b:8f8a:335f with SMTP id z12-20020a170903018c00b0016b8f8a335fmr18699029plg.133.1656666212882; Fri, 01 Jul 2022 02:03:32 -0700 (PDT) X-Google-Smtp-Source: AGRyM1umuzlHjb+AVT8pHf+MDYjA/xytvg2Ww3qrvKeBf7drySw0yZL85wg1m0wVfhF0UW2aCpNd7Q== X-Received: by 2002:a17:903:18c:b0:16b:8f8a:335f with SMTP id z12-20020a170903018c00b0016b8f8a335fmr18699008plg.133.1656666212635; Fri, 01 Jul 2022 02:03:32 -0700 (PDT) Received: from [10.72.13.237] ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id s22-20020a17090aba1600b001ec71be4145sm6020700pjr.2.2022.07.01.02.03.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 01 Jul 2022 02:03:32 -0700 (PDT) Message-ID: Date: Fri, 1 Jul 2022 17:03:19 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [PATCH v11 13/40] virtio_ring: split: reserve vring_align, may_reduce_num Content-Language: en-US To: Xuan Zhuo , virtualization@lists.linux-foundation.org Cc: Richard Weinberger , Anton Ivanov , Johannes Berg , "Michael S. Tsirkin" , "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 , 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 References: <20220629065656.54420-1-xuanzhuo@linux.alibaba.com> <20220629065656.54420-14-xuanzhuo@linux.alibaba.com> From: Jason Wang In-Reply-To: <20220629065656.54420-14-xuanzhuo@linux.alibaba.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org 在 2022/6/29 14:56, Xuan Zhuo 写道: > 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;