From 4760195df00982b4e388e859b41a63feed6d0cab Mon Sep 17 00:00:00 2001 From: Dave Martin Date: Tue, 15 Feb 2011 17:04:19 +0000 Subject: ARM: Thumb-2: Reflect ARM/Thumb-2 configuration in module vermagic 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 Acked-by: Nicolas Pitre --- arch/arm/include/asm/module.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h index a2b775b81cf..543b44916d2 100644 --- a/arch/arm/include/asm/module.h +++ b/arch/arm/include/asm/module.h @@ -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 */ -- cgit v1.2.3