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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 2922DC47426 for ; Thu, 1 Oct 2020 16:18:05 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E4561208C7 for ; Thu, 1 Oct 2020 16:18:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E4561208C7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3D8BE6B0082; Thu, 1 Oct 2020 12:18:00 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 389F56B0083; Thu, 1 Oct 2020 12:18:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2778E6B0085; Thu, 1 Oct 2020 12:18:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0098.hostedemail.com [216.40.44.98]) by kanga.kvack.org (Postfix) with ESMTP id F02006B0082 for ; Thu, 1 Oct 2020 12:17:59 -0400 (EDT) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 871B28249980 for ; Thu, 1 Oct 2020 16:17:59 +0000 (UTC) X-FDA: 77323863078.14.pet12_0111c9d2719c Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin14.hostedemail.com (Postfix) with ESMTP id 6751A18229835 for ; Thu, 1 Oct 2020 16:17:59 +0000 (UTC) X-HE-Tag: pet12_0111c9d2719c X-Filterd-Recvd-Size: 2123 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf09.hostedemail.com (Postfix) with ESMTP for ; Thu, 1 Oct 2020 16:17:58 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id BB25BAFCB; Thu, 1 Oct 2020 16:17:57 +0000 (UTC) From: Nicolas Saenz Julienne To: robh+dt@kernel.org, catalin.marinas@arm.com, hch@lst.de, robin.murphy@arm.com, devicetree@vger.kernel.org, iommu@lists.linux-foundation.org, linux-mm@kvack.org, Andrew Morton Cc: will@kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, Nicolas Saenz Julienne Subject: [PATCH 4/4] mm: Update DMA zones description Date: Thu, 1 Oct 2020 18:17:40 +0200 Message-Id: <20201001161740.29064-5-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201001161740.29064-1-nsaenzjulienne@suse.de> References: <20201001161740.29064-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The default behavior for arm64 changed, so reflect that. Signed-off-by: Nicolas Saenz Julienne --- include/linux/mmzone.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index fb3bf696c05e..d28ce77ccc2a 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -363,8 +363,9 @@ enum zone_type { * - arm only uses ZONE_DMA, the size, up to 4G, may vary depending on * the specific device. * - * - arm64 has a fixed 1G ZONE_DMA and ZONE_DMA32 for the rest of the - * lower 4G. + * - arm64 uses a single 4GB ZONE_DMA, except on the Raspberry Pi 4, + * in which ZONE_DMA covers the first GB and ZONE_DMA32 the rest of + * the lower 4GB. * * - powerpc only uses ZONE_DMA, the size, up to 2G, may vary * depending on the specific device. --=20 2.28.0