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=-5.3 required=3.0 tests=BAYES_00, 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 9F4E6C47096 for ; Sun, 6 Jun 2021 14:39:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 862CD61429 for ; Sun, 6 Jun 2021 14:39:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230145AbhFFOlg (ORCPT ); Sun, 6 Jun 2021 10:41:36 -0400 Received: from verein.lst.de ([213.95.11.211]:43014 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230085AbhFFOld (ORCPT ); Sun, 6 Jun 2021 10:41:33 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id 774BC68AFE; Sun, 6 Jun 2021 16:39:41 +0200 (CEST) Date: Sun, 6 Jun 2021 16:39:41 +0200 From: Christoph Hellwig To: guoren@kernel.org Cc: anup.patel@wdc.com, palmerdabbelt@google.com, arnd@arndb.de, wens@csie.org, maxime@cerno.tech, drew@beagleboard.org, liush@allwinnertech.com, lazyparser@gmail.com, wefu@redhat.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-sunxi@lists.linux.dev, Guo Ren , Christoph Hellwig Subject: Re: [RFC PATCH v2 06/11] riscv: pgtable: Add DMA_COHERENT with custom PTE attributes Message-ID: <20210606143941.GA6032@lst.de> References: <1622970249-50770-1-git-send-email-guoren@kernel.org> <1622970249-50770-10-git-send-email-guoren@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1622970249-50770-10-git-send-email-guoren@kernel.org> User-Agent: Mutt/1.5.17 (2007-11-01) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org NAK, no SOC must ever mess with pagetable attributes.