From patchwork Thu Oct 1 16:17:36 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: 11811859 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 383B7174A for ; Thu, 1 Oct 2020 16:19:36 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 F28C9208B6 for ; Thu, 1 Oct 2020 16:19:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Mtzhb2vW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F28C9208B6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=aNRUnihC+1xwOV06S5IOxNYR+zUeUpymQASGN4fy3IQ=; b=Mtzhb2vWwCUm2+KinhCGZ5dQPa F/R5V0IvRMz2f1Tppp/XtVnoQGgbuvwbue1J1mVjR2t9ff3PDXktH+Ho/PGW1Giun4GQwj+yLGAy8 fetR+H3DOagFWi8tZxvGJ+myECD2VZ9EFPGB7lZ7kNVdCLdhX5A5kQxRNE6zR973FD4OOzN0GZBZV QJusKLzQ6V+dQxv9NF1E9jIKpqDNbIZqRtZGKJksEXIog7FISFlDUt8iEzK3yTx8u4sd8t036T9uJ UYsnec5MmTQP0dVJb88wz6y1sjBhK3tCMOl94n10ouW5l4Fi3H1jJEkr5r6yxuyiXuRPa/Qx/d+LL A+gWqQoQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kO1HQ-0004S7-16; Thu, 01 Oct 2020 16:18:04 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kO1HL-0004Oq-EA; Thu, 01 Oct 2020 16:18:00 +0000 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201001_121759_626531_6E5032F5 X-CRM114-Status: GOOD ( 11.17 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [195.135.220.15 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [195.135.220.15 listed in wl.mailspike.net] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nicolas Saenz Julienne , will@kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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(-)