linux-kernel - [PATCHv2 1/4] unicore32-oldabi: add CONFIG_UNICORE32

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Message-ID: <63336.117.114.135.40.1475067982.squirrel@mprc.pku.edu.cn>
Date:   Wed, 28 Sep 2016 21:06:22 +0800 (CST)
From:   "Xuetao Guan" <gxt@...c.pku.edu.cn>
To:     linux-kernel@...r.kernel.org
Cc:     linux@...ck-us.net, qinrui@....edu.cn, gxt@...c.pku.edu.cn,
        zhangheng@...c.pku.edu.cn
Subject: [PATCHv2 1/4] unicore32-oldabi: add CONFIG_UNICORE32_OLDABI for 
     distinguishing two ABIs

Signed-off-by: Guan Xuetao <gxt@...c.pku.edu.cn>
Signed-off-by: Qin Rui <qinrui@....edu.cn>
Tested-by: Guenter Roeck <linux@...ck-us.net>
---
 arch/unicore32/Kconfig | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index 0769066..e23100b 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -69,6 +69,17 @@ source "kernel/Kconfig.freezer"

 menu "System Type"

+config UNICORE32_OLDABI
+	bool "Allow old ABI binaries to run with this kernel"
+	default y
+	help
+	  This option preserves the old syscall interface instead of the +	 
asm-generic one. It also provides a compatibility layer to
+	  intercept syscalls that have structure arguments which layout
+	  in memory differs between the asm-generic ABI and this old one. +
+	  If in doubt, say Y.
+
 config MMU
 	def_bool y

-- 
1.9.1