Re: [PATCH v3] powerpc/64: Option to use ELFv2 ABI for big-endian kernels
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2021-05-04 10:27:41
Possibly related (same subject, not in this thread)
- 2021-05-05 · Re: [PATCH v3] powerpc/64: Option to use ELFv2 ABI for big-endian kernels · Michal Suchánek <hidden>
- 2021-05-05 · Re: [PATCH v3] powerpc/64: Option to use ELFv2 ABI for big-endian kernels · Michal Suchánek <hidden>
- 2021-05-03 · [PATCH v3] powerpc/64: Option to use ELFv2 ABI for big-endian kernels · Nicholas Piggin <npiggin@gmail.com>
Excerpts from Michal Suchánek's message of May 4, 2021 12:38 am:
On Mon, May 03, 2021 at 01:37:57PM +0200, Andreas Schwab wrote:quoted
Should this add a tag to the module vermagic?
Good question.
Would the modues link even if the vermagic was not changed? I suppose something like this might do it.
Yeah I don't know how robust the loader would be to a mismatch. We could add this patch. Thanks, Nick
quoted hunk ↗ jump to hunk
Thanks Michaldiff --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 */