[haiku-appserver] Re: CPU-idle-loop and HALT instruction?
- From: Ingo Weinhold <bonefish@xxxxxxxxxxxxxxx>
- To: haiku-appserver@xxxxxxxxxxxxx
- Date: Mon, 12 Dec 2005 23:11:18 +0100
On 2005-12-12 at 21:47:51 [+0100], Rudolf <drivers.be-hold@xxxxxxxxxxxx>
wrote:
>
> Maybe (I guess) this question is off-topic here:
>
> But can someone include HALT for the CPU-idle loop? My system overheats
> on Haiku... I can only run it for a few minutes over here because of
> that, and I really appreciate the low noise blower-setup I have
> currently.
>
> Or, is it already in there and can I somehow enable it?
From src/system/kernel/arch/x86/arch_cpu.c:
void
arch_cpu_idle(void)
{
switch (smp_get_num_cpus()) {
case 0:
panic("You need at least 1 CPU to run Haiku\n");
case 1:
asm("hlt");
default:
break;
}
}
So, if you have more than one CPU, the only thing you can do is change this
code. There might be a reason, why it is implemented like it is, though. On
the other hand there's also no comment that you computer will explode when
executing "hlt" on a multi CPU machine either...
CU, Ingo
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