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=-5.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 F1C6EC388F9 for ; Tue, 27 Oct 2020 16:57:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B40521707 for ; Tue, 27 Oct 2020 16:57:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=axis.com header.i=@axis.com header.b="NFaT3Twf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1814543AbgJ0Q5M (ORCPT ); Tue, 27 Oct 2020 12:57:12 -0400 Received: from smtp1.axis.com ([195.60.68.17]:38420 "EHLO smtp1.axis.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1794307AbgJ0PLI (ORCPT ); Tue, 27 Oct 2020 11:11:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axis.com; l=430; q=dns/txt; s=axis-central1; t=1603811468; x=1635347468; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=cYAFVC2I7kC87mONlLHOpxS5S+sZKzhdDuTQreXUrGw=; b=NFaT3Twfvm6/286wRqekQ8iTlIfqfcPQ3ir0QOgp1zAyb0wrq0SehgHe EtQYpMIwFLTsa46xOeXniVUptYSEc1J3wCcu/BmI4JGS8lpQMPiGcdmDl hV9vf94/I8oXyREWvIIsjJ4vD3DwidfBUJkwrbp/lol2HEfc3aUYq2733 rYkXMWYAA/rD+M3l5xSS3+6XFaVvDRM8ol2N2Vl0xe0IXyAR1g1e37DBG 1hjdsqDx+pY+NB/PHgXgXA069QGNkiiIPVpihVDnIynUWg1jqs9sRHh8L 0d2KsMN1WEzzbGQxDZxZdArY/vxcuT2l/TAQlka/X55AT7NtnOaGiL/uX A==; IronPort-SDR: WQ2JBOaww3AO15TYN7su951w/wGZO/qqfbDMWofm3KvD+0+tcRaKFHutyFOUdSwkd2VCttpDu8 n17L7J0+LP3ZZyodu9Zwrq48WPY29j6K2+FkEO64wkRMXxnXx/lYKY9oPuQde1K3i6tKXufAWO n050c8x/00RXhsg5eXqLTsfJBCGZxFSVcEMlCLSBE/flqc12kwP9VzpaXO3zYoAT4wDx/FbmPm NykphuRp9525qnVEuwxt6QFWmcVciJMIKSo6Ta1oSjHXvvxnaUn2kIHM3I00CG07M/RxMyE+pq UQw= X-IronPort-AV: E=Sophos;i="5.77,424,1596492000"; d="scan'208";a="14470414" Date: Tue, 27 Oct 2020 16:11:06 +0100 From: Vincent Whitchurch To: Sherry Sun CC: "sudeep.dutt@intel.com" , "ashutosh.dixit@intel.com" , Christoph Hellwig , "gregkh@linuxfoundation.org" , "arnd@arndb.de" , "kishon@ti.com" , "lorenzo.pieralisi@arm.com" , "linux-kernel@vger.kernel.org" , dl-linux-imx Subject: Re: [PATCH V3 2/4] misc: vop: do not allocate and reassign the used ring Message-ID: <20201027151106.e4skr6dsbwvo4al6@axis.com> References: <20201022050638.29641-1-sherry.sun@nxp.com> <20201022050638.29641-3-sherry.sun@nxp.com> <20201023092650.GB29066@infradead.org> <20201027062802.GC207971@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170113 (1.7.2) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Oct 27, 2020 at 08:05:43AM +0100, Sherry Sun wrote: > Can you help test the patch about removing the codes of reassign used > ring, and comment on the impact for Intel MIC platform? Thanks for > any help. I don't have access to MIC hardware myself, either. But this patch is quite certainly going to break it since guests using a kernel without the patch will not work with hosts with a kernel with the patch.