Build failure in v4.4.y.queue (ppc:allmodconfig)

[Michael Ellerman]

Greg Kroah-Hartman <gregkh at linuxfoundation.org> writes:
> On Wed, May 08, 2019 at 01:26:42PM -0700, Guenter Roeck wrote:
>> I see multiple instances of:
>> 
>> arch/powerpc/kernel/exceptions-64s.S:839: Error:
>> 	attempt to move .org backwards
>> 
>> in v4.4.y.queue (v4.4.179-143-gc4db218e9451).
>> 
>> This is due to commit 9b2d4e06d7f1 ("powerpc/64s: Add support for a store
>> forwarding barrier at kernel entry/exit"), which is part of a large patch
>> series and can not easily be reverted.
>> 
>> Guess I'll stop doing ppc:allmodconfig builds in v4.4.y ?
>
> Michael, I thought this patch series was supposed to fix ppc issues, not
> add to them :)

Well it fixes some, but creates others :}

> Any ideas on what to do here?

Turning off CONFIG_CBE_RAS (obscure IBM Cell Blade RAS features) is
sufficient to get it building. Is that an option for your build tests
Guenter?

We can try to rearrange some of the exception vectors as Michal
suggested, but that's not without risk either.

cheers