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Tue, 10 Mar 2020 12:55:27 +0000 From: peng.fan@nxp.com To: catalin.marinas@arm.com, will@kernel.org, nsaenzjulienne@suse.de Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-imx@nxp.com, Peng Fan Subject: [PATCH] arm64: mm: make CONFIG_ZONE_DMA configurable without EXPERT Date: Tue, 10 Mar 2020 20:48:46 +0800 Message-Id: <1583844526-24229-1-git-send-email-peng.fan@nxp.com> X-Mailer: git-send-email 2.7.4 Content-Type: text/plain X-ClientProxiedBy: SG2PR04CA0172.apcprd04.prod.outlook.com (2603:1096:4::34) To AM0PR04MB4481.eurprd04.prod.outlook.com (2603:10a6:208:70::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (119.31.174.66) by SG2PR04CA0172.apcprd04.prod.outlook.com (2603:1096:4::34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.2793.15 via Frontend Transport; Tue, 10 Mar 2020 12:55:24 +0000 X-Mailer: git-send-email 2.7.4 X-Originating-IP: [119.31.174.66] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 251c156d-f4ab-47a7-b4ef-08d7c4f24e0d X-MS-TrafficTypeDiagnostic: AM0PR04MB5410:|AM0PR04MB5410: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:218; 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The lower 1GB memory will be occupied by ZONE_DMA, this will cause CMA allocation fail on some platforms, because CMA area could not across different type of memory zones. Make CONFIG_ZONE_DMA configurable without EXPERT option could let people build non debug kernel image with CONFIG_ZONE_DMA disabled. Signed-off-by: Peng Fan --- arch/arm64/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 217e12ff2115..c4ba8bf011e1 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -270,7 +270,7 @@ config GENERIC_CALIBRATE_DELAY def_bool y config ZONE_DMA - bool "Support DMA zone" if EXPERT + bool "Support DMA zone" default y config ZONE_DMA32 -- 2.16.4