Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966238AbWKNSEY (ORCPT ); Tue, 14 Nov 2006 13:04:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S966240AbWKNSEX (ORCPT ); Tue, 14 Nov 2006 13:04:23 -0500 Received: from rhlx01.hs-esslingen.de ([129.143.116.10]:9910 "EHLO rhlx01.hs-esslingen.de") by vger.kernel.org with ESMTP id S966238AbWKNSEX (ORCPT ); Tue, 14 Nov 2006 13:04:23 -0500 Date: Tue, 14 Nov 2006 19:04:21 +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: <20061114180421.GA1910@rhlx01.hs-esslingen.de> References: <20061114173054.GA27092@rhlx01.hs-esslingen.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061114173054.GA27092@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: 1151 Lines: 27 On Tue, Nov 14, 2006 at 06:30:54PM +0100, Andreas Mohr wrote: > Hmm, hopefully it's easy to research where to enable HPET > (if there is one at all!) on an el-cheapo VIA chipset... http://forum.insanelymac.com/index.php?showtopic=31399&pid=219051&st=0&#entry219051 "The VIA VT8237 chipset also support HPET." And this is confirmed by: http://www.nabble.com/-PATCH--HPET:-do-not-use-64-bit-reads-t2500136.html "However, there is no guarantee that the timer actually has 64 bits, the specification only recommends it. My x86-64 system has a 32-bit timer (AMD64 with a VT8237 southbridge). " Hmm, and I'm afraid I have a VT8235 only which possibly doesn't have HPET :-P A relatively detailed (covers Windows XP timer details) HPET etc. x86 timers discussion is at "[Comp-arch] x86 High Precision Event Timers support" https://www.gelato.unsw.edu.au/archives/comp-arch/2006-June/001320.html 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/