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Date: Fri, 17 Oct 2003 10:01:12 -0700 (PDT)
From: Nate Lawson <nate@root.org>
To: Marcel Moolenaar <marcel@FreeBSD.org>
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Subject: 
	Re: cvs commit: src/sys/ia64/ia64 machdep.c src/sys/kern kern_idle.c
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On Thu, 16 Oct 2003, Marcel Moolenaar wrote:
>   FreeBSD src repository
>
>   Modified files:
>     sys/ia64/ia64        machdep.c
>     sys/kern             kern_idle.c
>   Log:
>   Implement cpu_idle() on ia64. We put the processor in a lightweight
>   halt state that minimizes power consumption while still preserving
>   cache and TLB coherency. Halting the processor is not conditional at
>   this time. Tested with UP and SMP kernels.

Thank you!

> +void
> +cpu_idle()
> +{
> +	struct ia64_pal_result res;
> +
> +	res = ia64_call_pal_static(PAL_HALT_LIGHT, 0, 0, 0);
>  }
>
>  void

Is this the preferred way to do this?  If I call asm("sti; hlt") on ia64,
will that work?  What about on amd64?

Thanks,
Nate