[PATCH] ppc64: re-enable kexec to allow module loads with CONFIG_MODVERSIONS and CONFIG_RELOCATABLE turned on

[Neil Horman]

>> Paul, Ben, given that Rusty hasn't come back with any opinion on this patch,
>do you
>> feel comfortable merging it via the ppc tree?  Currently the earlyinit routine
>> is only compiled in and used for your arch, so I think its fairly benign.
>
>Sorry, I *did* track down the archives for linuxppc-dev, then find your post,
>then read your patch.  But I didn't actually reply.
>
>Other than minor issues, there's one significant one: you shouldn't be trying
>to change rodata.  It might work on PPC today, but it's poor form at least.
>
>How's this?  Untested on ppc.
>
I'll try grab a ppc64 system and test this soon.

>Other changes:
>1) I also changed reloc_start to an array; this is a good idea for any
>   linker-defined symbols so the compiler can't make assumptions about size.
Ok, I'll certainly trust your linker skill over mine :)

>2) local.h?  How about module.h?
Seems good to me
>3) I don't think the extra ". = 0" is necessary.
Its not, I was just trying to be clear about where reloc_start was to be placed.

>4) ARCH_USES_RELOC_ENTRIES isn't clear enough for me; I prefer
>   ARCH_RELOCATE_KCRCTAB.
Sounds good to me.


I'll test this as soon as I'm able
Thanks!
Neil