Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755053Ab1B1P5F (ORCPT ); Mon, 28 Feb 2011 10:57:05 -0500 Received: from mx1.redhat.com ([209.132.183.28]:1765 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755018Ab1B1P5D (ORCPT ); Mon, 28 Feb 2011 10:57:03 -0500 Message-ID: <4D6BC5CA.8060004@redhat.com> Date: Mon, 28 Feb 2011 10:56:58 -0500 From: Zachary Amsden User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.10) Gecko/20100621 Fedora/3.0.5-1.fc13 Thunderbird/3.0.5 MIME-Version: 1.0 To: Nikola Ciprich CC: Avi Kivity , Nikola Ciprich , KVM list , Linux kernel list Subject: Re: regression - 2.6.36 -> 2.6.37 - kvm - 32bit SMP guests don't boot References: <4D664E85.8070808@redhat.com> <20110224124151.GK25673@pcnci.linuxbox.cz> <4D665449.4050908@redhat.com> <20110224125702.GC29840@pcnci.linuxbox.cz> <20110225104823.GD29840@pcnci.linuxbox.cz> <4D67C077.6060108@redhat.com> <20110227172052.GB2474@nik-comp.lan> <4D6BA85B.7080908@redhat.com> <20110228143247.GE29840@pcnci.linuxbox.cz> <4D6BBC84.6020408@redhat.com> <20110228152823.GF29840@pcnci.linuxbox.cz> In-Reply-To: <20110228152823.GF29840@pcnci.linuxbox.cz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1762 Lines: 52 > > On Mon, Feb 28, 2011 at 10:17:24AM -0500, Zachary Amsden wrote: > >> On 02/28/2011 09:32 AM, Nikola Ciprich wrote: >> >>>> Does the bug you are hitting manifest on both Intel and AMD platforms? >>>> >>>> >>> I don't have any AMD box here, I'll try this out at my home box. >>> >>> >>> >>>> Further, do the systems you are hitting this on have stable or unstable >>>> TSCs? >>>> >>>> >>> how do I find this out? I don't see any warning about TSC in guest, but I've >>> just started it.. >>> n. >>> >> Before worrying about the guest, is the host TSC stable? What is the >> host clocksource? >> > not sure, I'm not setting anything specifically, is this snippet of dmesg relevant: > > [ 1.148829] HPET: 8 timers in total, 5 timers will be used for per-cpu timer > [ 1.148934] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 40, 41, 42, 43, 44, 0 > [ 1.149331] hpet0: 8 comparators, 64-bit 14.318180 MHz counter > [ 1.151831] hpet: hpet2 irq 40 for MSI > [ 1.151962] hpet: hpet3 irq 41 for MSI > [ 1.155930] hpet: hpet4 irq 42 for MSI > [ 1.159937] hpet: hpet5 irq 43 for MSI > [ 1.163943] hpet: hpet6 irq 44 for MSI > [ 1.175955] Switching to clocksource tsc > > so I guess I'm using hpet? > n. > > > Looks like you are using tsc based on the last line. Can you tell us please cat /proc/cpuinfo cat /sys/devices/system/clocksource/clocksource0/current_clocksource and grep -i dmesg for these keywords: TSC, clock, hpet, stable, khz, kvm -- 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/