Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966258AbWKNVAv (ORCPT ); Tue, 14 Nov 2006 16:00:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S966351AbWKNVAv (ORCPT ); Tue, 14 Nov 2006 16:00:51 -0500 Received: from rhlx01.hs-esslingen.de ([129.143.116.10]:50629 "EHLO rhlx01.hs-esslingen.de") by vger.kernel.org with ESMTP id S966258AbWKNVAv (ORCPT ); Tue, 14 Nov 2006 16:00:51 -0500 Date: Tue, 14 Nov 2006 22:00:49 +0100 From: Andreas Mohr To: Andreas Mohr Cc: "Pallipadi, Venkatesh" , Len Brown , Ingo Molnar , Thomas Gleixner , linux-kernel@vger.kernel.org, "Van De Ven, Arjan" Subject: Re: CONFIG_NO_HZ: missed ticks, stall (keyb IRQ required) [2.6.18-rc4-mm1] Message-ID: <20061114210049.GB15440@rhlx01.hs-esslingen.de> References: <20061114203016.GA15440@rhlx01.hs-esslingen.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061114203016.GA15440@rhlx01.hs-esslingen.de> User-Agent: Mutt/1.4.2.2i X-Priority: none Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1185 Lines: 32 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@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/