[PATCH v3] powerpc/64: Option to use ELFv2 ABI for big-endian kernels

[Michal Suchánek]

On Mon, May 03, 2021 at 01:37:57PM +0200, Andreas Schwab wrote:
> Should this add a tag to the module vermagic?

Would the modues link even if the vermagic was not changed?

I suppose something like this might do it.

Thanks

Michal

diff --git a/arch/powerpc/include/asm/vermagic.h b/arch/powerpc/include/asm/vermagic.h
index b054a8576e5d..3fdaacd7a743 100644
--- a/arch/powerpc/include/asm/vermagic.h
+++ b/arch/powerpc/include/asm/vermagic.h
@@ -14,7 +14,14 @@
 #define MODULE_ARCH_VERMAGIC_RELOCATABLE	""
 #endif
 
+
+#ifdef CONFIG_PPC64_BUILD_BIG_ENDIAN_ELF_V2_ABI
+#define MODULE_ARCH_VERMAGIC_ELF_V2_ABI	"abi-elfv2 "
+#else
+#define MODULE_ARCH_VERMAGIC_ELF_V2_ABI	""
+#endif
+
 #define MODULE_ARCH_VERMAGIC \
-		MODULE_ARCH_VERMAGIC_FTRACE MODULE_ARCH_VERMAGIC_RELOCATABLE
+		MODULE_ARCH_VERMAGIC_FTRACE MODULE_ARCH_VERMAGIC_RELOCATABLE MODULE_ARCH_VERMAGIC_ELF_V2_ABI
 
 #endif /* _ASM_VERMAGIC_H */