powerpc/ppc64: Allow allmodconfig to build (finally !)

[Guenter Roeck]

On Tue, May 13, 2014 at 07:16:41PM +1000, Benjamin Herrenschmidt wrote:
> On Mon, 2014-05-12 at 17:28 -0700, Guenter Roeck wrote:
> 
> > After applying this patch, I get
> > 
> > arch/powerpc/kernel/exceptions-64s.S:269: Error: operand out of range
> > (0x000000000000814c is not between 0xffffffffffff8000 and 0x0000000000007ffc)
> > arch/powerpc/kernel/exceptions-64s.S:729: Error: operand out of range
> > (0x000000000000814c is not between 0xffffffffffff8000 and 0x0000000000007ffc)
> > 
> > with powerpc:defconfig, powerpc:allmodconfig, powerpc:cell_defconfig, and
> > powerpc:maple_defconfig.
> > 
> > This is on top of v3.15-rc5. Any idea what is going on ?
> > 
> > Compiler is powerpc64-poky-linux-gcc (GCC) 4.7.2 (from poky 1.4.0-1).
> 
> Interesting... works with all my test configs using 4.7.3...
> 
> I don't have my tree at hand right now, I'll check what that means
> tomorrow see if I can find a workaround.
> 
It works for me with gcc 4.8.2 (build from yocto 1.6.0).

Is asking people to use gcc 4.7.3 or later acceptable ?

Guenter