RE: Linux/prom notification of platform error handling features

Luck, Tony
2004-05-24T07:25:26Z

>BTW, do other platforms support delivery of concurrent MCAs to the OS,
>or do they only deliver the first one? Tony Luck's TLB MCA recovery
>has a lock on the MCA stack which implies that at least one platform
>does concurrent MCA delivery. However Linux will single thread
>multiple MCAs, which could confuse the rendezvous algorithms.

That was mostly paranoia at that point, as I didn't know whether
platforms would do concurrent delivery ... and the Linux code only
has one {stack,save area, etc) allocated, and I didn't want to
try to provide per-cpu versions of these (Zoltan posted a patch
that included changes to do this, plus a whole lot more). Eventually
Linux ought to allow for concurrent MCA processing.

-Tony