AFAICT the sole purpose for the hideous x86_64 idle_notifier mess is to support i7300_idle. IMO this junk does not belong in IRQ handling, etc. Can we redo this to work in some kind of generic way?
I have no idea why it makes sense to twiddle I/O AT registers in the beginning of whatever IRQ wakes up the CPU. Note that, if absolutely necessary, the ECX bit 0 MWAIT extension can be used to reliably execute code before handling interrupts that wake us from idle. That is, there could be a real cpuidle driver for that chip that does: cli; poke ioat; mwait(ecx = 1); poke ioat; sti; Or we could delete the driver entirely. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
