From: Yury Norov <ynorov@caviumnetworks.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-doc@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>
Cc: Yury Norov <ynorov@caviumnetworks.com>,
        Andrew Pinski <pinskia@gmail.com>,
        Andrew Pinski <Andrew.Pinski@caviumnetworks.com>,
        Adam Borowski <kilobyte@angband.pl>,
        Chris Metcalf <cmetcalf@ezchip.com>,
        Steve Ellcey <sellcey@caviumnetworks.com>,
        Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>,
        Ramana Radhakrishnan <ramana.gcc@googlemail.com>,
        Florian Weimer <fweimer@redhat.com>,
        Bamvor Zhangjian <bamvor.zhangjian@huawei.com>,
        Andreas Schwab <schwab@suse.de>, Chris Metcalf <cmetcalf@mellanox.com>,
        Heiko Carstens <heiko.carstens@de.ibm.com>, schwidefsky@de.ibm.com,
        broonie@kernel.org, Joseph Myers <joseph@codesourcery.com>,
        christoph.muellner@theobroma-systems.com, szabolcs.nagy@arm.com,
        klimov.linux@gmail.com, Nathan_Lynch@mentor.com, agraf@suse.de,
        Prasun.Kapoor@caviumnetworks.com, geert@linux-m68k.org,
        philipp.tomsich@theobroma-systems.com, manuel.montezelo@gmail.com,
        linyongting@huawei.com, davem@davemloft.net, zhouchengming1@huawei.com,
        Andrew Pinski <apinski@cavium.com>
Subject: [PATCH 20/20] arm64:ilp32: add ARM64_ILP32 to Kconfig
Date: Sun,  4 Jun 2017 15:00:09 +0300
Message-Id: <20170604120009.342-21-ynorov@caviumnetworks.com>
In-Reply-To: <20170604120009.342-1-ynorov@caviumnetworks.com>
References: <20170604120009.342-1-ynorov@caviumnetworks.com>
MIME-Version: 1.0
Content-Type: text/plain
SpamDiagnosticOutput: 1:99
SpamDiagnosticMetadata: NSPM
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Jun 2017 12:04:07.3497 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN3PR0701MB1267
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1269
Lines: 43

From: Andrew Pinski <apinski@cavium.com>

This patch adds the config option for ILP32.

Signed-off-by: Andrew Pinski <Andrew.Pinski@caviumnetworks.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Reviewed-by: David Daney <ddaney@caviumnetworks.com>
---
 arch/arm64/Kconfig | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 2275db8dc7c9..c155e195e939 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1063,7 +1063,7 @@ source "fs/Kconfig.binfmt"
 
 config COMPAT
 	bool
-	depends on AARCH32_EL0
+	depends on AARCH32_EL0 || ARM64_ILP32
 
 config AARCH32_EL0
 	bool "Kernel support for 32-bit EL0"
@@ -1085,6 +1085,14 @@ config AARCH32_EL0
 
 	  If you want to execute 32-bit userspace applications, say Y.
 
+config ARM64_ILP32
+	bool "Kernel support for ILP32"
+	select COMPAT
+	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 COMPAT && SYSVIPC
-- 
2.11.0