Messages in this thread | | | Date | Fri, 17 Oct 2008 15:49:23 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] x86: Add clflush before monitor for Intel 7400 series |
| |
Pallipadi, Venkatesh wrote: >>> >> I guess I'm a bit confused about the tradeoff of CLFLUSH versus simply >> disabling MWAIT. This is a relatively recent processor and so >> optimizing matters (if this was a P4 I would be more worried about what >> has least impact on the kernel as a whole.) > > As of now this is only for a limited models of CPUs (MP CPUs) > and not a norm. It is a errata on this CPU and not > something that is going to become architectural. >
Yes, I understand. However, there is still the option to disable MWAIT, and the question is still open if it makes sense.
-hpa
| |