Differences from smp-pc to..

pc:
- disable Symmetric multi-processing support
- enable Local APIC support on uniprocessors
- enable IO-APIC support on uniprocessors

failsafe-pc:
- disable Symmetric multi-processing support
- kernel log buffer size set to 14
- Processor Family = 386
- Timer Frequency = 250 Hz
- High Memory Support (off) 
- disable PAE (Physical Address Extension) Support
- disable 64 bit Memory and IO resources (EXPERIMENTAL)
- enable Compat VDSO support
- enable DMA Engine support
  - modularize Intel I/OAT DMA support
- enable Disable heap randomization
- Choose SLAB allocator (SLAB)
- enable Lguest guest support

c3:
- disable Symmetric multi-processing support
- kernel log buffer size set to 14
- Processor family = CyrixIII/VIA-C3
- disable Generic x86 support
- Timer Frequency = 250 Hz
- High Memory Support (off) 
- disable PAE (Physical Address Extension) Support
- disable 64 bit Memory and IO resources (EXPERIMENTAL)
- enable DMA Engine support
  - modularize Intel I/OAT DMA support
- enable Disable heap randomization
- enable Lguest guest support

geode:
- disable Symmetric multi-processing support
- kernel log buffer size set to 14
- Processor family = Geode GX/LX
- disable Generic x86 support
- Timer Frequency = 250 Hz
- High Memory Support (off) 
- disable PAE (Physical Address Extension) Support
- disable 64 bit Memory and IO resources (EXPERIMENTAL)
- enable DMA Engine support
  - modularize Intel I/OAT DMA support
- enable Disable heap randomization
- enable Lguest guest support

olpc:
- extremely different
- similar to the geode
- includes an initramfs source file: initrd-simple.cpio.gz
