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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 F07D3C47420 for ; Thu, 1 Oct 2020 16:17:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BE1D82220D for ; Thu, 1 Oct 2020 16:17:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732360AbgJAQR4 (ORCPT ); Thu, 1 Oct 2020 12:17:56 -0400 Received: from mx2.suse.de ([195.135.220.15]:57816 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732026AbgJAQR4 (ORCPT ); Thu, 1 Oct 2020 12:17:56 -0400 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 4E70FAF3B; Thu, 1 Oct 2020 16:17:54 +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 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 0/4] arm64: Default to 32-bit wide ZONE_DMA Date: Thu, 1 Oct 2020 18:17:36 +0200 Message-Id: <20201001161740.29064-1-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Using two distinct DMA zones turned out to be problematic. Here's an attempt go back to a saner default. I tested this on both a RPi4 and QEMU. --- Nicolas Saenz Julienne (4): of/fdt: Update zone_dma_bits when running in bcm2711 dma-direct: Turn zone_dma_bits default value into a define arm64: Default to 32-bit ZONE_DMA mm: Update DMA zones description with arm64 newer behavior arch/arm64/mm/init.c | 12 ++++++++---- drivers/of/fdt.c | 10 ++++++++++ include/linux/dma-direct.h | 1 + include/linux/mmzone.h | 5 +++-- kernel/dma/direct.c | 2 +- 5 files changed, 23 insertions(+), 7 deletions(-) -- 2.28.0