Re: [RFC 00/15] x86_64: Optimize percpu accesses

[Mike Travis]

Jeremy Fitzhardinge wrote:
> H. Peter Anvin wrote:
>> Did the suspected linker bug issue ever get resolved?
> 
> I don't believe so.  I think Mike is getting very early crashes
> depending on some combination of gcc, linker and kernel config.  Or
> something.
> 
> This fragility makes me very nervous.  It seems hard enough to get this
> stuff working with current tools; making it work over the whole range of
> supported tools looks like its going to be hard.
> 
>    J

FYI, I think it was a combination of errors that was causing my problems.
In any case, I've successfully compiled and booted Ingo's pesky config
config-Tue_Jul__1_16_48_45_CEST_2008.bad with gcc's 4.2.0, 4.2.3 and 4.2.4
on both Intel and AMD boxes.  (As well as a variety of other configs.)

I think Hugh's change adding "text" to the BUILD_IRQ macro might also have
helped, since interrupts seemed to have always been involved in the panics.
That might explain the variable-ness of the gcc version's.

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