Received: by 2002:a25:23cc:0:0:0:0:0 with SMTP id j195csp1926771ybj; Wed, 6 May 2020 07:45:20 -0700 (PDT) X-Google-Smtp-Source: APiQypJxKctSgHTT8D3ePehdHO47XVCoLksGY2E6n6YWgRBAozQioP7jTaXa6vxJSQ6PTcEfw11B X-Received: by 2002:a17:906:1cd5:: with SMTP id i21mr7537902ejh.251.1588776320466; Wed, 06 May 2020 07:45:20 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1588776320; cv=none; d=google.com; s=arc-20160816; b=thL5A9S9aqDQ6BWfjHzuLmwGAEk6j847Y3gH+GIJ4dnM+rnDMXMhcs9gACWtvk0DnO WN22mZzLswycTZ1xsMzVm7D74GIZbyihV/iYls0v3iywzWX2zYD5z8LXVaFrPwOV+QuT JsOE37BbPIH5IdW6EibIgT6876D+fUljRrZlbSEg/P/xXySci/Exl2/OYh2bNYLErh1F hQwvxHBMSK4X3x5QA4OCYAEMDs36gSL7iWgDL92GLEg+2BAvTx9lY43rckIflT7+FFll yap/HLmF9mMBDf2jHdMDFqg/5UbaDRMGTw3rjswr6ok++nwxvK3KAJZ1QFbZX6h16Jsm rVDQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=PhdajbNn68yKLUpzBA64THvXTzqUMkhchAQNlpDFb4w=; b=fgsw5LnStMEfHX+XAfK9wFLVlAjBvLJCNFRmRGB0NS8LotlVLWmujT/Cc/PjNw2Zmg if+nvku/wH7RR9N5ZV/2By325jJCKDRqglgtH8U0p6xjVbpUotIAtgB9bkDJvSnVevYh +JitbXvBKByn3NAibJaMbCJgQloX0pdAf9Hgxtz5lvSIM28dfX5mI7gTS5iwg2dwBzHD DxUr+jZHHE5VvVpcT47wEcjW0Zu8RFTSFMYBDrjvnYTsoRXydHueYKigPZ2bNiuL91YE vgBzf7xz3Tc2DEFyKX5Awhx22dBFpKGN9IvpNbxdtYf/CFUHx77ucMRmdm5y1dE0+jEH +akQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=faoi2zfZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id o20si1173047edr.279.2020.05.06.07.44.57; Wed, 06 May 2020 07:45:20 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=faoi2zfZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729241AbgEFOmc (ORCPT + 99 others); Wed, 6 May 2020 10:42:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52094 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728712AbgEFOmb (ORCPT ); Wed, 6 May 2020 10:42:31 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 95C53C061A0F; Wed, 6 May 2020 07:42:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=PhdajbNn68yKLUpzBA64THvXTzqUMkhchAQNlpDFb4w=; b=faoi2zfZ65krF7BF3qUUJfKYRx cniqB35eZxuYkKsNE+7KTwE4viLklY4E1t/hGQSOOiWztg9Mq00mIdcIzK0zkhTINMU6h7yaUVZrB ZIFO1J0yGUnSvXTzi/E9QUILDu1ewOueuKnXU4GiY22Q5XuGKkOu4Lnj8dTPZ0CJ78sdHlTLVg4sp uVb7g4b/xrl3q3R+euu8YSifXQmYB8AyWndN64wjgz01U+b4rUyKR1yf3WvHSSgf1Jy1QigWdNp2n 0iNhSgsNZJ5ipXOEoPNwb/vx7SM9/rHiMNAM7/17epxZmS6hX8z3nlAdbQ7+0H2fZezfwp6s2I76C t7RSQVFg==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jWLFQ-0001wI-Ty; Wed, 06 May 2020 14:42:08 +0000 Date: Wed, 6 May 2020 07:42:08 -0700 From: Christoph Hellwig To: Huacai Chen Cc: Tiezhu Yang , Thomas Bogendoerfer , Christoph Hellwig , Jiaxun Yang , "open list:MIPS" , LKML , Xuefeng Li Subject: Re: [PATCH v6] MIPS: Loongson: Add DMA support for LS7A Message-ID: <20200506144208.GD27643@infradead.org> References: <1588213867-32274-1-git-send-email-yangtiezhu@loongson.cn> <7d7f6211-f6bc-daae-5b13-b54092e762a1@loongson.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 06, 2020 at 04:47:30PM +0800, Huacai Chen wrote: > > For the above reasons, I think what you are concerned is not a > > big deal. > I don't think so, this is obviously a regression. If we can accept a > regression of RS780E, why we still maintain Loongson-2EF rather than > simply drop them? While I much prefer to use the default, regression an otherwise working platform seems like a bad idea. I don't really know much about the Loongson platforms, do they all boot using the same kernel image?