linux-kernel - [PATCH v5 23/23] arm64:ilp32: add ARM64

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Message-ID: <1443564860-31208-24-git-send-email-ynorov@caviumnetworks.com>
Date:	Wed, 30 Sep 2015 01:14:20 +0300
From:	Yury Norov <ynorov@...iumnetworks.com>
To:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <catalin.marinas@....com>,
	<arnd@...db.de>, <agraf@...e.de>, <bamvor.zhangjian@...wei.com>
CC:	<yury.norov@...il.com>, <philipp.tomsich@...obroma-systems.com>,
	<apinski@...ium.com>, <christoph.muellner@...obroma-systems.com>,
	<klimov.linux@...il.com>, Yury Norov <ynorov@...iumnetworks.com>
Subject: [PATCH v5 23/23] arm64:ilp32: add ARM64_ILP32 to Kconfig

From: Andrew Pinski <apinski@...ium.com>

This patch adds the config option for ILP32.

Signed-off-by: Philipp Tomsich <philipp.tomsich@...obroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@...obroma-systems.com>
Signed-off-by: Yury Norov <ynorov@...iumnetworks.com>

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index d1dc605..afbde9c 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -680,7 +680,7 @@ source "fs/Kconfig.binfmt"
 
 config COMPAT
 	def_bool y
-	depends on AARCH32_EL0
+	depends on AARCH32_EL0 || ARM64_ILP32
 	select COMPAT_BINFMT_ELF
 
 config AARCH32_EL0
@@ -702,6 +702,13 @@ config AARCH32_EL0
 
 	  If you want to execute 32-bit userspace applications, say Y.
 
+config ARM64_ILP32
+	bool "Kernel support for ILP32"
+	help
+	  This option enables support for AArch64 ILP32 user space.  ILP32
+	  is an ABI where long and pointers are 32bits but it uses the AARCH64
+	  instruction set.
+
 config SYSVIPC_COMPAT
 	def_bool y
 	depends on AARCH32_EL0 && SYSVIPC
-- 
2.1.4

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