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=-2.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 1B140C3A59D for ; Fri, 16 Aug 2019 18:00:01 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 E145D20665 for ; Fri, 16 Aug 2019 18:00:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="CP2lL+7/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E145D20665 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=62lGl5MwKfLXUv6JCHY4GLDEU4APZTzBo1xYEgoxIug=; b=CP2lL+7/gSvu4I boLm+ipQGbmB10qXUV2MAFaqG+GiCHqGV2NAes4e3H2GfUWL0NDr6qBQ2eyx8CcnQWgmz7S0Vpb82 3LA7HvFKhz0I+wJa3mZe5k2g2nPG+ULBChgM+sEAG89ZFHDds9G9EvOztWEdw3oule7AocexmdD3r 53Ka5Vq43IZKG2723S9gfwtcf8lITUNgEe56A+6vad/0yh8uqJ4cbn0qgc9GQdTVTHmVGoCFnbPf9 +Azl2J85UKP1a9QZX/xLDNlDfnXvGTluQTwPP603r387M6xtuve8WRIDvaqQ7cpKEwFPUNWXnFFZK aXMj5rFPUJGk7FRS59Bg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hygW2-0000Wc-0r; Fri, 16 Aug 2019 17:59:54 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hygVx-0000TK-MR for linux-arm-kernel@lists.infradead.org; Fri, 16 Aug 2019 17:59:51 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 94E9A68B05; Fri, 16 Aug 2019 19:59:42 +0200 (CEST) Date: Fri, 16 Aug 2019 19:59:42 +0200 From: Christoph Hellwig To: Will Deacon Subject: Re: [PATCH 6/6] arm64: document the choice of page attributes for pgprot_dmacoherent Message-ID: <20190816175942.GA4879@lst.de> References: <20190816070754.15653-1-hch@lst.de> <20190816070754.15653-7-hch@lst.de> <20190816173118.4rbbzuogfamfa554@willie-the-truck> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190816173118.4rbbzuogfamfa554@willie-the-truck> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190816_105949_955006_58A6787B X-CRM114-Status: GOOD ( 14.67 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Shawn Anastasio , linux-m68k@lists.linux-m68k.org, Catalin Marinas , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Russell King , linux-mips@vger.kernel.org, iommu@lists.linux-foundation.org, Geert Uytterhoeven , Paul Burton , James Hogan , Guan Xuetao , Christoph Hellwig , linux-arm-kernel@lists.infradead.org, Robin Murphy Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Archived-At: List-Archive: On Fri, Aug 16, 2019 at 06:31:18PM +0100, Will Deacon wrote: > Mind if I tweak the second sentence to be: > > This is different from "Device-nGnR[nE]" memory which is intended for MMIO > and thus forbids speculation, preserves access size, requires strict > alignment and can also force write responses to come from the endpoint. > > ? It's a small change, but it better fits with the arm64 terminology > ("strongly ordered" is no longer used in the architecture). > > If you're happy with that, I can make the change and queue this patch > for 5.4. I'm fine with the change, but you really need this series as base, as there is no pgprot_dmacoherent before the series. So I think I'll have to queue it up if we want it for 5.4, and I'll need a few more reviews for the other patches in this series first. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel