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RE: [Xen-devel] [PATCH 4] MCA physical address check when calculate domain

Before Nehalem memory errors were reported via NMI ... use of
MCA for this (and thus use of MCi_ADDR) begins with the memory
controller moving on-die.

So if you are interested in memory errors - you are out of luck
on pre-NHM systems.

MCi_ADDR on the pre-NHM systems was sometimes used to report
cache errors (index/rank/...)


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