It means you're using an old kernel, first off... :-) :-)
The newest kernels call it a CIA machine check, as that's a more accurate name
of the chipset that goes between the EV5 CPU and the memory and PCI busses, and
we wanted to distinguish between the ALCOR platform and this chipset (which of
course first showed up in the ALCOR, hence it's original name).
What it means is, that some hardware event took place that waasn't expected
or legal, like trying to touch an address on the PCI bus where no device is
located, or an ECC/parity error from memory or cache.
If these are frequent, best take a look at arch/alpha/kernel/cia.c and see
if there's a way to turn on more error prints about the nature of the machine
check. There may not be too much, I'm not sure that anyone's gone and done
a detailed analysis of the machine check frame data (sepcial registers and
such).
Let me know what you find.
--Jay++
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American Non Sequitur Society: we don't make sense, but we do like pizza...
Jay A Estabrook Alpha Migration Tools - LINUX Project
Digital Equipment Corp. (508) 952-4202 or (DTN) 227-4202
151 Taylor Street - TAY1-2 enet: jestabro@amt.tay1.dec.com
Littleton, MA 01460-1407 decnet: tallis::jestabro
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