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authorNicolas Pitre <nico@cam.org>2006-01-14 16:37:15 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-01-14 16:37:15 +0000
commit6c90c872017773cde70a51432cb28f253451b967 (patch)
tree18aa18b8804049ef4bd50d00d58493eaf7088e5b /arch/arm
parent8993a44cede418940a4921de5dc24d52a9fe8767 (diff)
[ARM] 3112/1: old ABI compat: config option to turn it on
Patch from Nicolas Pitre Enjoy ! Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/Kconfig17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index cb66b5745fa0..006f09218ae7 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -416,6 +416,23 @@ config AEABI
To use this you need GCC version 4.0.0 or later.
+config OABI_COMPAT
+ bool "Allow old ABI binaries to run with this kernel"
+ depends on AEABI
+ default y
+ help
+ This option preserves the old syscall interface along with the
+ new (ARM EABI) one. It also provides a compatibility layer to
+ intercept syscalls that have structure arguments which layout
+ in memory differs between the legacy ABI and the new ARM EABI
+ (only for non "thumb" binaries). This option adds a tiny
+ overhead to all syscalls and produces a slightly larger kernel.
+ If you know you'll be using only pure EABI user space then you
+ can say N here. If this option is not selected and you attempt
+ to execute a legacy ABI binary then the result will be
+ UNPREDICTABLE (in fact it can be predicted that it won't work
+ at all). If in doubt say Y.
+
config ARCH_DISCONTIGMEM_ENABLE
bool
default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)