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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 <peng.fan@nxp.com>
Subject: [PATCH] arm64: mm: make CONFIG_ZONE_DMA configurable without EXPERT
Date:   Tue, 10 Mar 2020 20:48:46 +0800
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From: Peng Fan <peng.fan@nxp.com>

commit 1a8e1cef7603 ("arm64: use both ZONE_DMA and ZONE_DMA32")
enables both ZONE_DMA and ZONE_DMA32. 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 <peng.fan@nxp.com>
---
 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