Messages in this thread | | | From | "H. Peter Anvin" <> | Subject | Re: do_fast_gettimeoffset on x86 | Date | Sat, 4 Apr 1998 16:13:00 -0800 (PST) |
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> > during APM powerdown or not. Some boxes even seem to corrupt the counter? > > Not sure, maybe Alan knows more about these things, i think he added that > > #ifdef CONFIG_APM. > > No. Its always been there. Most CPU's stop the rdtsc cycle counters when > they idle, others change the cycle counter when they are running in > 'standby' mode etc. >
I think "most" is incorrect. I think the right thing to say is that *some* do (IMO a bug).
-hpa
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