[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>
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@ -416,6 +416,23 @@ config AEABI
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To use this you need GCC version 4.0.0 or later.
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config OABI_COMPAT
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bool "Allow old ABI binaries to run with this kernel"
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depends on AEABI
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default y
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help
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This option preserves the old syscall interface along with the
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new (ARM EABI) one. It also provides a compatibility layer to
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intercept syscalls that have structure arguments which layout
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in memory differs between the legacy ABI and the new ARM EABI
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(only for non "thumb" binaries). This option adds a tiny
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overhead to all syscalls and produces a slightly larger kernel.
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If you know you'll be using only pure EABI user space then you
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can say N here. If this option is not selected and you attempt
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to execute a legacy ABI binary then the result will be
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UNPREDICTABLE (in fact it can be predicted that it won't work
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at all). If in doubt say Y.
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config ARCH_DISCONTIGMEM_ENABLE
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bool
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default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
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