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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 1FFBDC47256 for ; Wed, 6 May 2020 14:42:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E90BA20836 for ; Wed, 6 May 2020 14:42:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="faoi2zfZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729246AbgEFOmc (ORCPT ); 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?