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On Tuesday 07 November 2006 03:07, Ingo Molnar wrote: > > So given that C3 on every known system that has shipped to date breaks > > the LAPIC timer (and apparently this applies to C2 on these AMD > > boxes), dynticks needs a solid story for co-existing with C3. > > check out 2.6.19-rc4-mm2: it detects this breakage and works it around > by using the PIT as a clock-events source. That did the trick on my > laptop which has this problem too. I agree with you that degrading the > powersaving mode is not an option. > > we've got a question about HPET: it seems all recent hardware has it, > but the BIOS rarely mentions it, so the Linux driver does not enable > HPET. Is there any chance to enable HPET (in the chipset?) - this would > probably be a higher-quality clock-events source than the PIT. If Windows enumerates and uses the HPET on a box, then Linux should be able to use the HPET on that box too. I belive that Venki has looked at some of the HPET enumeration issues, and maybe he has some suggestions. Is there an example system on-hand where we know Windows works and Linux does not? -Len - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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