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=-3.8 required=3.0 tests=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 83347C5DF60 for ; Thu, 7 Nov 2019 09:56:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5732E2187F for ; Thu, 7 Nov 2019 09:56:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388025AbfKGJ4V (ORCPT ); Thu, 7 Nov 2019 04:56:21 -0500 Received: from mx2.suse.de ([195.135.220.15]:40796 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727926AbfKGJ4U (ORCPT ); Thu, 7 Nov 2019 04:56:20 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 9FC4DAFA7; Thu, 7 Nov 2019 09:56:18 +0000 (UTC) From: Nicolas Saenz Julienne To: catalin.marinas@arm.com, linux-kernel@vger.kernel.org Cc: Nicolas Saenz Julienne , devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 0/2] arm64: Fix CMA/crashkernel reservation Date: Thu, 7 Nov 2019 10:56:09 +0100 Message-Id: <20191107095611.18429-1-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As pointed out by Qian Cai[1] the series enabling ZONE_DMA in arm64 breaks CMA/crashkernel reservations on large devices, as it changed its default placement. After discussing it with Catalin Marinas we're restoring the old behavior. The Raspberry Pi 4, being the only device that needs CMA and crashkernel in ZONE_DMA will explicitly do so trough it's device tree. [1] https://lkml.org/lkml/2019/10/21/725 --- Changes since v1: - Move CMA area registration into bcm2711.dtsi Changes since v1: - s/Raspberry Pi/bcm2711 in bcm2711.dtsi Nicolas Saenz Julienne (2): ARM: dts: bcm2711: force CMA into first GB of memory arm64: mm: reserve CMA and crashkernel in ZONE_DMA32 arch/arm/boot/dts/bcm2711.dtsi | 20 ++++++++++++++++++++ arch/arm64/mm/init.c | 4 ++-- 2 files changed, 22 insertions(+), 2 deletions(-) -- 2.23.0