Machine check when executing

From: Zoltan Menyhart <>
Date: 2003-11-14 03:21:02
I've got a machine check when executing inside
ia64_global_tlb_purge() on an Intel Tiger box. The CPUs are:

family     : Itanium 2
model      : 1
revision   : 5

The failing instruction is: r32,r34;;

and r32 = a0000000 00000000, r34 = 00000000 00000040.

The Intel SDM Vol 3, page 3:200 says about the ptc.* instructions:
"Interruptions: Machine Check abort: Register NaT Consumption fault"

I checked with an ITP just before executing, the NaT bits
for r32 and r34 are 0.

What is the reason of this machine check?
Is there something non documented problem with ?

(I'm on a 2.4.20, but a should be the same...)
Thank you in advance.

Zoltan Menyhart
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Received on Thu Nov 13 11:20:32 2003

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