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 EBC3CC4742D for ; Thu, 1 Oct 2020 16:18:06 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (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 A95D3208C7 for ; Thu, 1 Oct 2020 16:18:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A95D3208C7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 6EF2E236B5; Thu, 1 Oct 2020 16:18:06 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id I-AZQEexQzLX; Thu, 1 Oct 2020 16:18:03 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id 6E3CA271F5; Thu, 1 Oct 2020 16:18:03 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 695C2C0889; Thu, 1 Oct 2020 16:18:03 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id EE502C0051 for ; Thu, 1 Oct 2020 16:18:02 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id DDB1627236 for ; Thu, 1 Oct 2020 16:18:02 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kdhCpXlAv03M for ; Thu, 1 Oct 2020 16:17:59 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by silver.osuosl.org (Postfix) with ESMTPS id 2432B271F5 for ; Thu, 1 Oct 2020 16:17:59 +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 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 Cc: will@kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" 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. -- 2.28.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu