Messages in this thread |  | | Subject | Re: Pentium 4 and 2.4/2.5 | Date | Wed, 8 Nov 2000 18:47:40 +0000 (GMT) | From | Alan Cox <> |
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> On Wed, 8 Nov 2000, Alan Cox wrote: > > > What state does it leave the condition codes ? That matters. > > Alan, rep ; nop is one of the suggested 2 byte fillers in the Athon > optimization guide; it's handled during instruction decode and is > completely free. It also has no effect on K6s.
Ok. Issue settled. So 'rep nop' is safe. Ok that can get into the spinlocks for 2.2.18
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