Peter Grehan d8acfb88ad - Bump MAXCPU to 4. Tested on a quad G5 with both 32 and 64-bit kernels.
A make buildkernel -j4 uses ~360% CPU.
- Bracket the AP spinup printf with a mutex to avoid garbled output.
- Enable SMP by default on powerpc64.

Reviewed by:	nwhitehorn
2010-09-03 03:56:09 +00:00
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