linux-kernel - Re: regression - 2.6.36 -> 2.6.37 - kvm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4D6BC5CA.8060004@redhat.com>
Date:	Mon, 28 Feb 2011 10:56:58 -0500
From:	Zachary Amsden <zamsden@...hat.com>
To:	Nikola Ciprich <extmaillist@...uxbox.cz>
CC:	Avi Kivity <avi@...hat.com>,
	Nikola Ciprich <nikola.ciprich@...uxbox.cz>,
	KVM list <kvm@...r.kernel.org>,
	Linux kernel list <linux-kernel@...r.kernel.org>
Subject: Re: regression - 2.6.36 -> 2.6.37 - kvm - 32bit SMP guests don't
 boot

>
> 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@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/