From patchwork Wed Oct 14 19:12:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 269494 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 BC437C43467 for ; Wed, 14 Oct 2020 19:12:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2AFAE22250 for ; Wed, 14 Oct 2020 19:12:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389070AbgJNTMS (ORCPT ); Wed, 14 Oct 2020 15:12:18 -0400 Received: from mx2.suse.de ([195.135.220.15]:52058 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388775AbgJNTMS (ORCPT ); Wed, 14 Oct 2020 15:12:18 -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 D7439B1EA; Wed, 14 Oct 2020 19:12:16 +0000 (UTC) From: Nicolas Saenz Julienne To: robh+dt@kernel.org, catalin.marinas@arm.com, hch@lst.de, ardb@kernel.org, linux-kernel@vger.kernel.org Cc: robin.murphy@arm.com, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, jeremy.linton@arm.com, iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, Nicolas Saenz Julienne , linux-acpi@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v3 0/8] arm64: Default to 32-bit wide ZONE_DMA Date: Wed, 14 Oct 2020 21:12:02 +0200 Message-Id: <20201014191211.27029-1-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@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. --- Changes since v2: - Introduce Ard's patch - Improve OF dma-ranges parsing function - Add unit test for OF function - Address small changes - Move crashkernel reservation later in boot process Changes since v1: - Parse dma-ranges instead of using machine compatible string Ard Biesheuvel (1): arm64: mm: Set ZONE_DMA size based on early IORT scan Nicolas Saenz Julienne (7): arm64: mm: Move reserve_crashkernel() into mem_init() arm64: mm: Move zone_dma_bits initialization into zone_sizes_init() of/address: Introduce of_dma_get_max_cpu_address() of: unittest: Add test for of_dma_get_max_cpu_address() dma-direct: Turn zone_dma_bits default value into a define arm64: mm: Set ZONE_DMA size based on devicetree's dma-ranges mm: Update DMA zones description arch/arm64/include/asm/processor.h | 1 + arch/arm64/mm/init.c | 20 ++++++------ drivers/acpi/arm64/iort.c | 51 ++++++++++++++++++++++++++++++ drivers/of/address.c | 42 ++++++++++++++++++++++++ drivers/of/unittest.c | 20 ++++++++++++ include/linux/acpi_iort.h | 4 +++ include/linux/dma-direct.h | 3 ++ include/linux/mmzone.h | 5 +-- include/linux/of.h | 7 ++++ kernel/dma/direct.c | 2 +- 10 files changed, 143 insertions(+), 12 deletions(-)