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Date: Tue, 14 Nov 2006 22:00:49 +0100 From: Andreas Mohr <andi@...x01.fht-esslingen.de> To: Andreas Mohr <andi@...x01.fht-esslingen.de> Cc: "Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>, Len Brown <lenb@...nel.org>, Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org, "Van De Ven, Arjan" <arjan.van.de.ven@...el.com> Subject: Re: CONFIG_NO_HZ: missed ticks, stall (keyb IRQ required) [2.6.18-rc4-mm1] Hi, On Tue, Nov 14, 2006 at 09:30:17PM +0100, Andreas Mohr wrote: > There's also some register description about APIC timer, > maybe I'll gather something about my C2 headaches from there. OK, offset 0x8C Host Bus Power Management Control has (VT8235, but 8237 is same I think): bit 0 Internal Clock Stop During Suspend (default 0) bit 1 Internal Clock Stop During C3 (default 0) [internal PCI clock] bit 2 Internal Clock Stop for PCI Idle (default 0) [stop PCI clock when PCKRUN# high] This wouldn't have anything whatsoever to do with my ACPI ""C2"" BIOS headaches, I assume?? Probably my BIOS has some of those bits tweaked to 1, need to fiddle with pciutils a bit... Somehow I'm getting the impression that we should have been rewarding the BIOS with indifference all the time already in Linux, given how *very useful* those chipset registers are... Argh. Burn ACPI, EFI, Real Mode, ..., let's go back to basics. :-P Andreas Mohr - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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