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=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,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 97489C64E7C for ; Wed, 2 Dec 2020 13:46:36 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1A893208FE for ; Wed, 2 Dec 2020 13:46:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1A893208FE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=xen.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.42742.76918 (Exim 4.92) (envelope-from ) id 1kkSSh-0005kI-Qs; Wed, 02 Dec 2020 13:46:27 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 42742.76918; Wed, 02 Dec 2020 13:46:27 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kkSSh-0005kA-Nc; Wed, 02 Dec 2020 13:46:27 +0000 Received: by outflank-mailman (input) for mailman id 42742; Wed, 02 Dec 2020 13:46:27 +0000 Received: from mail.xenproject.org ([104.130.215.37]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kkSSh-0005k4-7B for xen-devel@lists.xenproject.org; Wed, 02 Dec 2020 13:46:27 +0000 Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kkSSg-0001xP-0c; Wed, 02 Dec 2020 13:46:26 +0000 Received: from [54.239.6.186] (helo=a483e7b01a66.ant.amazon.com) by xenbits.xenproject.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1kkSSf-0007cx-Oa; Wed, 02 Dec 2020 13:46:25 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:Cc:To:Subject; bh=Xcmsw2LVMqxENrwEyIDOWOVwj7CAt2X7+DboZoaTOKs=; b=Sgn6516yAjhQ7Y4KTR3wRxnjIh hxkTAixzaxsXj2rRIACGyPnzHuVWmTB7eqn9Umqk/yutK+f+8mFFTKCiRQ8JgsI/3unL4YitXmK+i kA1uTjG4a7p7y8wmUgVI4ITHETFrwwdIA6GyRlLrXBHBs9f9j98Vm3b/8F2LTjOBNYNs=; Subject: Re: [PATCH v2 3/8] xen/arm: revert patch related to XArray To: Rahul Singh , xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, Stefano Stabellini , Volodymyr Babchuk References: <612c1adabc1c26a539abf0dc05ea20b51e66e85f.1606406359.git.rahul.singh@arm.com> From: Julien Grall Message-ID: <266b918c-b9c4-e067-b8dc-4e879c913af5@xen.org> Date: Wed, 2 Dec 2020 13:46:24 +0000 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <612c1adabc1c26a539abf0dc05ea20b51e66e85f.1606406359.git.rahul.singh@arm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit Hi Rahul, On 26/11/2020 17:02, Rahul Singh wrote: > XArray is not implemented in XEN revert the patch that introduce the > XArray code in SMMUv3 driver. Similar to the atomic revert, you are explaining why the revert but not the consequences. I think this is quite important to have them outline in the commit message as it looks like it means the SMMU driver would not scale. > > Once XArray is implemented in XEN this patch can be added in XEN. What's the plan for that? Cheers, -- Julien Grall