Messages in this thread | | | Date | Sat, 9 Jan 2016 11:39:14 -0800 | Subject | Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() | From | Tony Luck <> |
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On Sat, Jan 9, 2016 at 9:57 AM, Andy Lutomirski <luto@amacapital.net> wrote: > On Sat, Jan 9, 2016 at 9:48 AM, Tony Luck <tony.luck@gmail.com> wrote: >> 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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