Re: [PATCH] change name of rep_nop

Benjamin Herrenschmidt (benh@kernel.crashing.org)
Tue, 9 Oct 2001 14:13:22 +0200


>>One approach we take on PPC that you may or may not like for this is
>>dynamic patching.
>
>BIG RED WARNING: Anybody thinking of using dynamic patching must
>consider modules as well as the kernel. modutils 2.4.8 added support
>for ppc archdata to allow dynamic patching of modules using the ftr
>data. There also has to be code in kernel/module.c::module_arch_init()
>to take the archdata and do whatever is required.
>
>If anybody starts doing dynamic patching, please let me know so I can
>handle modutils and module_arch_init().

Yes, definitely an issue. The mecanism we used on PPC was so specific
to some low-level arch asm code that modules were a non-issue... until
some of that critical code ended up beeing inlined.

Ben.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/