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authorDave Martin <dave.martin@linaro.org>2011-02-25 17:54:52 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-02-26 13:36:06 +0000
commit80f0aad77f3e1e9d9e518b09ac46963d628ae2be (patch)
treedf195fff207483f4b10520ebcd3a500c1f703364 /arch/arm/include/asm/module.h
parent3572bea8cbc57f0bef1e0f4580c01717df7026d8 (diff)
ARM: 6766/1: 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 <dave.martin@linaro.org> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/module.h')
-rw-r--r--arch/arm/include/asm/module.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h
index a2b775b81cfa..543b44916d2c 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 */