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ARM: 6766/1: Thumb-2: Reflect ARM/Thumb-2 configuration in module vermagic

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Loading Thumb-2 modules into an ARM kernel or vice-versa isn't
guaranteed to work safely, since the kernel is not interworking-
aware everywhere.

This patch adds "thumb2" to the module vermagic when
CONFIG_THUMB2_KERNEL is enabled, to help avoid accidental loading
of modules into the wrong kernel.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Dave Martin 2011-02-25 17:54:52 +01:00 committed by Russell King
parent 3572bea8cb
commit 80f0aad77f
1 changed files with 8 additions and 0 deletions
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8
arch/arm/include/asm/module.h
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@ -40,8 +40,16 @@ struct mod_arch_specific {
#define MODULE_ARCH_VERMAGIC_P2V ""
#endif
/* Add instruction set architecture tag to distinguish ARM/Thumb kernels */
#ifdef CONFIG_THUMB2_KERNEL
#define MODULE_ARCH_VERMAGIC_ARMTHUMB "thumb2 "
#else
#define MODULE_ARCH_VERMAGIC_ARMTHUMB ""
#endif
#define MODULE_ARCH_VERMAGIC \
MODULE_ARCH_VERMAGIC_ARMVSN \
MODULE_ARCH_VERMAGIC_ARMTHUMB \
MODULE_ARCH_VERMAGIC_P2V
#endif /* _ASM_ARM_MODULE_H */