Kexec problem areas

• APIC and IO-APIC shutdown (hangs)

• VM changes (some recent fixes by Hugh via Martin)

• Races in cpumask operations during shutdown/reboot (fixed around 2.6.3)

• Use in init_mm on PPC64 (or any non-x86)

• Firmware/kernel interactions & dependencies (PPC64 now being addressed)

• Global data structures at certain addresses (PPC64)