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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B3969C433FE for ; Mon, 11 Oct 2021 03:04:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A4F160F38 for ; Mon, 11 Oct 2021 03:04:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233784AbhJKDGY (ORCPT ); Sun, 10 Oct 2021 23:06:24 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:57417 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231966AbhJKDGU (ORCPT ); Sun, 10 Oct 2021 23:06:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1633921461; 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=T79BKdCqOj489zc3OMzu2/jJB+p06oKh0yYujOy933Y=; b=MYLXmxTBszOmjtaGjJoIorRAN04cRlXGXkPQc5jewC8/sDxRrm9P5huY1bPw8I8nKz84qf wwsQvk61znLlRInWIUg0PMr+6SaYsRagdEpUXVNo2RMyaZvVGZmcdMxm1wCZA/L9p48oVz KZbbJ7FGMgotd++q+Ff1zL256CzwGNo= Received: from mail-pg1-f199.google.com (mail-pg1-f199.google.com [209.85.215.199]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-525-SviUat8oOXKLnKQjv_RO3g-1; Sun, 10 Oct 2021 23:04:19 -0400 X-MC-Unique: SviUat8oOXKLnKQjv_RO3g-1 Received: by mail-pg1-f199.google.com with SMTP id q23-20020a6562570000b029023cbfb4fd73so6169787pgv.14 for ; Sun, 10 Oct 2021 20:04:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=T79BKdCqOj489zc3OMzu2/jJB+p06oKh0yYujOy933Y=; b=yrw5byZQ9hKHW9W6VOXwrHQDUUemItK0wFsvci2UmwZibyzijtQgNr+VCLUXM6M3Pf iCWfaAB+MOzEaBk4dak+WMxo8gBMNyB9KFXvLywzZZ+bqdlcrYhJbn7jQWC44nts9DLA dcyYcRxnHySAUbPcP/blBnjAbs0XAGYMW4B+3sLj9Getr2sFu6Clw8/t4YITMJ2FY5OR X39MbpR5BQvHOpeT0Hs1VSeF8nTmQhz8vFqp/wyRPoMs8+7eZ7qFqaLarXGcOeDqbmDw rN5HfjffZc6ZRoFsps+wcxAPYIRx2881v5tzC5yh92ugW8ZYYHCI2+smJwQ5mZq+vxGv DApg== X-Gm-Message-State: AOAM5303zJQ9gqFtq7qzpWvgo7USjTkQZHrlbZ5QnXupXUV5jyAN7Vql DgPVpIY74oijOfIp/4Q51akApotLAlHvXiinHBHQwbLVvrW9M/U6n1OzwT8jpwjS15zk0ms09eG Qj6jLtNXzoKfYJCO/RurJC1LD X-Received: by 2002:a17:90b:4d09:: with SMTP id mw9mr27157210pjb.100.1633921458614; Sun, 10 Oct 2021 20:04:18 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwj5eVsOT5kcTZ/KTOQVLWqO2RshC4Do9f4Y1Paq4OzbE2pH4irvvwspv1U+ckK8B0ZVkiBng== X-Received: by 2002:a17:90b:4d09:: with SMTP id mw9mr27157183pjb.100.1633921458358; Sun, 10 Oct 2021 20:04:18 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id z9sm5505242pji.42.2021.10.10.20.04.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 10 Oct 2021 20:04:17 -0700 (PDT) Subject: Re: [PATCH v4 4/7] vdpa: add new callback get_vq_num_min in vdpa_config_ops To: Wu Zongyong , virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, mst@redhat.com Cc: wei.yang1@linux.alibaba.com References: <451ce3c272ebd5d532db1ed19c2ab53c4609f7ad.1632882380.git.wuzongyong@linux.alibaba.com> From: Jason Wang Message-ID: Date: Mon, 11 Oct 2021 11:04:14 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: <451ce3c272ebd5d532db1ed19c2ab53c4609f7ad.1632882380.git.wuzongyong@linux.alibaba.com> Content-Type: text/plain; charset=gbk; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ÔÚ 2021/9/29 ÏÂÎç2:11, Wu Zongyong дµÀ: > This callback is optional. For vdpa devices that not support to change > virtqueue size, get_vq_num_min and get_vq_num_max will return the same > value, so that users can choose a correct value for that device. > > Suggested-by: Jason Wang > Signed-off-by: Wu Zongyong Acked-by: Jason Wang > --- > include/linux/vdpa.h | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h > index a896ee021e5f..30864848950b 100644 > --- a/include/linux/vdpa.h > +++ b/include/linux/vdpa.h > @@ -171,6 +171,9 @@ struct vdpa_map_file { > * @get_vq_num_max: Get the max size of virtqueue > * @vdev: vdpa device > * Returns u16: max size of virtqueue > + * @get_vq_num_min: Get the min size of virtqueue (optional) > + * @vdev: vdpa device > + * Returns u16: min size of virtqueue > * @get_device_id: Get virtio device id > * @vdev: vdpa device > * Returns u32: virtio device id > @@ -266,6 +269,7 @@ struct vdpa_config_ops { > void (*set_config_cb)(struct vdpa_device *vdev, > struct vdpa_callback *cb); > u16 (*get_vq_num_max)(struct vdpa_device *vdev); > + u16 (*get_vq_num_min)(struct vdpa_device *vdev); > u32 (*get_device_id)(struct vdpa_device *vdev); > u32 (*get_vendor_id)(struct vdpa_device *vdev); > u8 (*get_status)(struct vdpa_device *vdev);