Messages in this thread | | | Date | Fri, 1 May 2015 11:03:53 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86_64, asm: Work around AMD SYSRET SS descriptor attribute issue |
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On Thu, Apr 30, 2015 at 04:23:26PM -0700, H. Peter Anvin wrote: > I probably should have added that the microbenchmark specifically tests > for an atomic 5-byte NOP (as required by tracepoints etc.) If the > requirement for 5-byte atomic is dropped there might be faster > combinations, e.g. 66 66 66 90 might work better on some platforms, or > using very long 0F 1F sequences.
Right, so I was thinking of extending it for all sizes 1 - 15 and then run it on boxes. I'll keep you posted.
Thanks for the toy - now I get to have some fun. :-)
-- Regards/Gruss, Boris.
ECO tip #101: Trim your mails when you reply. --
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