On Sat, Jan 9, 2016 at 9:57 AM, Andy Lutomirski [off-list ref] wrote:

On Sat, Jan 9, 2016 at 9:48 AM, Tony Luck [off-list ref] wrote:

quoted

ERMS?

It's the fast string extension, aka Enhanced REP MOV STOS.  On CPUs
with that feature (and not disabled via MSR), plain ol' rep movs is
the fastest way to copy bytes.  I think this includes all Intel CPUs
from SNB onwards.

Ah ... very fast at copying .. but currently not machine check recoverable.

-Tony

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