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| author | Nicolas Pitre <nico@cam.org> | 2006-01-14 16:37:15 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-01-14 16:37:15 +0000 |
| commit | 6c90c872017773cde70a51432cb28f253451b967 (patch) | |
| tree | 18aa18b8804049ef4bd50d00d58493eaf7088e5b /arch/arm/Kconfig | |
| parent | 8993a44cede418940a4921de5dc24d52a9fe8767 (diff) | |
| download | lwn-6c90c872017773cde70a51432cb28f253451b967.tar.gz lwn-6c90c872017773cde70a51432cb28f253451b967.zip | |
[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/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 17 |
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) |