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 X-Spam-Level: X-Spam-Status: No, score=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ED5C6C433C1 for ; Thu, 25 Mar 2021 11:09:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A0BFC61976 for ; Thu, 25 Mar 2021 11:09:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230044AbhCYLIl (ORCPT ); Thu, 25 Mar 2021 07:08:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:39993 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229900AbhCYLIi (ORCPT ); Thu, 25 Mar 2021 07:08:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1616670517; 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: in-reply-to:in-reply-to:references:references; bh=fKj3N7qjc3wKOxA3NoAZDiYAxmrNm7GOxG509L79+1k=; b=cu7S7EHiaulfggoULBC4P4taWnfY/OR6EnUoKO/WN792PjJI4fzLuch2hn/dlD6/F1Kntt OKVl8FLVZDRNllWHTLCmxa4/O2NpYGjA2GZwXyUbbIAZhol6X8bWokErwYdeNMaoDqO4sA hgWoGtnty2pz+sQgmurf/iAonWYij0Y= Received: from mail-wr1-f72.google.com (mail-wr1-f72.google.com [209.85.221.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-370-MIRQvxR8NgqopVxpAP8YGA-1; Thu, 25 Mar 2021 07:08:35 -0400 X-MC-Unique: MIRQvxR8NgqopVxpAP8YGA-1 Received: by mail-wr1-f72.google.com with SMTP id n16so2500540wro.1 for ; Thu, 25 Mar 2021 04:08:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=fKj3N7qjc3wKOxA3NoAZDiYAxmrNm7GOxG509L79+1k=; b=WVLnSjqjc5lkAJGTgMrrbeEWx/E/r8sci1EzW/Hgp6kV/u4dNIzfuCZtCl+T/LEG/N ogN9RVV+miZiKMG807wKcHfhDGq+nCEyU234krRBpUJf6hbODXr2wOQP2RPqUvcXMk08 ATB4zgxFG+4qhKKxo3YIKAqa9OQycQ+d+S5+dpxYEjBpMUOcBZj/YT6JIq8CzAX5KbXs wtxiKFsRxp4x2uikg4u0GSgjr7dBg3mumLj+hKWuwqa3aM7S3v8Kr6SIxcgkvCVjQVGp AUN+umPpOJxKMLYTlDkGJNG/wydIqDfy/iD8Y87oRRHUwRLC7OYnnVlkC0xRaTo13OJu s5xA== X-Gm-Message-State: AOAM531cslFGC56HZzauFpX+T1x8MxHW8TrfOH0AwpplHci/Tq0vQgQB QNA+jB7pwMktLbjWK7hVcNIQD/uwEX2pk+G8iA7a4DERLtuzNFYIyaigKKFk14yKIXvzMWZn80A ueyznAskPFjEZUNFg3m8o642lUQ== X-Received: by 2002:a05:600c:204f:: with SMTP id p15mr7394508wmg.165.1616670514588; Thu, 25 Mar 2021 04:08:34 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyiEtLL2V7byI4WDi3Jbt4TeRDQzSQxBNNRwTIXQ/L2sd55YH0ycog2gsdgUk7sVz7dGg2BRg== X-Received: by 2002:a05:600c:204f:: with SMTP id p15mr7394472wmg.165.1616670514357; Thu, 25 Mar 2021 04:08:34 -0700 (PDT) Received: from steredhat (host-79-34-249-199.business.telecomitalia.it. [79.34.249.199]) by smtp.gmail.com with ESMTPSA id w22sm5958086wmi.22.2021.03.25.04.08.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Mar 2021 04:08:33 -0700 (PDT) Date: Thu, 25 Mar 2021 12:08:31 +0100 From: Stefano Garzarella To: Xie Yongji Cc: mst@redhat.com, jasowang@redhat.com, stefanha@redhat.com, parav@nvidia.com, bob.liu@oracle.com, hch@infradead.org, rdunlap@infradead.org, willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk, bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com, dan.carpenter@oracle.com, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH v5 03/11] vhost-vdpa: protect concurrent access to vhost device iotlb Message-ID: <20210325110831.v57e4xg7twzzcu7n@steredhat> References: <20210315053721.189-1-xieyongji@bytedance.com> <20210315053721.189-4-xieyongji@bytedance.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20210315053721.189-4-xieyongji@bytedance.com> Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Mon, Mar 15, 2021 at 01:37:13PM +0800, Xie Yongji wrote: >Use vhost_dev->mutex to protect vhost device iotlb from >concurrent access. > >Fixes: 4c8cf318("vhost: introduce vDPA-based backend") >Signed-off-by: Xie Yongji >--- > drivers/vhost/vdpa.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) Reviewed-by: Stefano Garzarella