From: Yury Norov <ynorov@caviumnetworks.com>
To: <catalin.marinas@arm.com>, <arnd@arndb.de>,
        <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>
CC: <pinskia@gmail.com>, <ddaney.cavm@gmail.com>, <jan.dakinevich@gmail.com>,
        <Prasun.Kapoor@caviumnetworks.com>,
        <christoph.muellner@theobroma-systems.com>,
        <philipp.tomsich@theobroma-systems.com>, <broonie@kernel.org>,
        <andrey.konovalov@linaro.org>, <Nathan_Lynch@mentor.com>,
        <agraf@suse.de>, <bamvor.zhangjian@huawei.com>,
        <klimov.linux@gmail.com>, Andrew Pinski <apinski@cavium.com>,
        Yury Norov <ynorov@caviumnetworks.com>,
        Andrew Pinski <Andrew.Pinski@caviumnetworks.com>
Subject: [PATCH v6 02/17] arm64: ensure the kernel is compiled for LP64
Date: Tue, 3 Nov 2015 02:30:31 +0300
Message-ID: <1446507046-24604-3-git-send-email-ynorov@caviumnetworks.com>
In-Reply-To: <1446507046-24604-1-git-send-email-ynorov@caviumnetworks.com>
References: <1446507046-24604-1-git-send-email-ynorov@caviumnetworks.com>
MIME-Version: 1.0
Content-Type: text/plain
SpamDiagnosticOutput: 1:23
SpamDiagnosticMetadata: NSPM
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Nov 2015 23:31:34.1391 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM2PR07MB621
X-Microsoft-Exchange-Diagnostics: 1;DM2PR07MB447;2:jxU2hCtt687OZc9MeVZeGTAPnqAbmHSHZ4et/EZ0Zf73JhDgzs0qz32xXxnpCmHPHaQvnN/qW+fe1+TuAPHaAGlIveC39eSSSGcEiYURv7MzqE2oysI1LTAIxosBx5r8W3bFhvD4yu7MBsXE3vhjtpj4XmCZfqmKHBillcQ7ZDw=;23:2xqYMKQvU7Zl0qs99rfrgL76xlHzLmgFiLfDN+z56VvpR1yUosOGAwvcPLshJdxQiYC+bNRApbI6zTU/6zYrXcXMkZeVFWRWZ2xUR3Wuu9ayhwTTGd6LJrCdQEBk2xGoRSNSeVWYKNVeDmOF74cZ4URjEljTgJvnFjuUm69etcWdyXhWHtTeuYlKRQ0KFr0V
X-OriginatorOrg: caviumnetworks.com
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1506
Lines: 48

From: Andrew Pinski <apinski@cavium.com>

The kernel needs to be compiled as a LP64 binary for ARM64, even when
using a compiler that defaults to code-generation for the ILP32 ABI.
Consequently, we need to explicitly pass '-mabi=lp64' (supported on
gcc-4.9 and newer).

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>
Signed-off-by: Andrew Pinski <Andrew.Pinski@caviumnetworks.com>
Reviewed-by: David Daney <david.daney@cavium.com>
---
 arch/arm64/Makefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index d10b5d4..432b69a 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -29,14 +29,19 @@ endif
 KBUILD_CFLAGS	+= -mgeneral-regs-only $(lseinstr)
 KBUILD_AFLAGS	+= $(lseinstr)
 
+KBUILD_CFLAGS	+= $(call cc-option,-mabi=lp64)
+KBUILD_AFLAGS	+= $(call cc-option,-mabi=lp64)
+
 ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
 KBUILD_CPPFLAGS	+= -mbig-endian
 AS		+= -EB
 LD		+= -EB
+LDFLAGS		+= -maarch64linuxb
 else
 KBUILD_CPPFLAGS	+= -mlittle-endian
 AS		+= -EL
 LD		+= -EL
+LDFLAGS		+= -maarch64linux
 endif
 
 CHECKFLAGS	+= -D__aarch64__
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/