RE: [PATCH 4/6] x86-mce: Add spinlocks to prevent duplicated MCP and CMCI reports.

From: Luck, Tony
Date: Wed Jul 09 2014 - 19:33:24 EST

> I don't think we got the description right here. I think the real
> issue here was machine check polls happening on multiple CPUs with
> shared banks, all reporting the same MCEs. This is very reproducible
> when booting with mce=no_cmci, since all CPUs will handle all banks,
> and there's AFAICT no good way to identify shared banks without
> enabling CMCI.

Ok - then update the description to enumerate the problem cases.

*) mce=no_cmci
*) Intel cpus with MCG_CAP.MCG_CMCI_P=0
*) AMD cpus (they don't do CMCI at all, do they??)

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