Re: unexpected IO-APIC, 2.4.36 SMP, AMD dual core Opteron

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Tuynman, William (JSC-DT/USA)[USA] wrote:
	I have been getting this "An unexpected IO-APIC was found" message. In checking, it occurs on 2.4.34 also.

	The kernel was compiled for 32 bit execution and is running on an AMD dual core Opteron. The machine is an HP Proliant, DL 585.

I'm attaching, as text, a portion of the messages file which contains all of the boot information.

I would be happy to assist with providing additional information that would be helpful to you.

The first question I have is, why are you running a 2.4 kernel on a modern CPU? I suspect the SMP logic in 2.4.26 is a decade older than the hardware. SMP was pretty unusual then, multi-core was just not an end user feature. I don't doubt that the IO-APIC may have unsupported features.

Might I suggest that you boot off a recent "live CD" like Fedora or Puppy Linux, just to see if you still see a problem. If not, you will have more information to evaluate your next step.

Bill Davidsen <davidsen@xxxxxxx>
 "Woe unto the statesman who makes war without a reason that will still
be valid when the war is over..." Otto von Bismark

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