PowerPC config options

[David Woodhouse]

On Tue, 2008-01-15 at 21:01 -0600, Josh Boyer wrote:
> Couple of PowerPC related config things we might want to change.
> 
> 1) CONFIG_TUNE_CELL.  Right now, this is set to Y on config-powerpc64.
> That's fine only because it doesn't do anything until GCC 4.3 shows
> up.  GCC 4.3 will hit rawhide soon, and we might want to turn this off
> before then or the kernel will likely run slower on non-Cell CPU based
> machines.

Will do. I'd wondered about that myself quite recently -- not sure who
turned it on.

> 2) Why are we still building a separate powerpc32-smp kernel?  SMP
> kernel's work on UP machines, even for PowerPC IIRC.

But not particularly efficiently, and _most_ ppc32 machines are UP.
For i386 SMP we have magic to NOP out the spinlocks, etc.

-- 
dwmw2