linux-kernel - Re: [KVM timekeeping 10/35] Fix deep C-state TSC desynchronization

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Message-ID: <4C907DF4.8000601@web.de>
Date:	Wed, 15 Sep 2010 10:04:04 +0200
From:	Jan Kiszka <jan.kiszka@....de>
To:	Avi Kivity <avi@...hat.com>
CC:	Zachary Amsden <zamsden@...hat.com>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Glauber Costa <glommer@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	John Stultz <johnstul@...ibm.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [KVM timekeeping 10/35] Fix deep C-state TSC desynchronization

Am 15.09.2010 09:55, Avi Kivity wrote:
>  On 09/15/2010 07:34 AM, Jan Kiszka wrote:
>> Do you think kvm-kmod could contribute to this? As I said, I'm on a 34
>> kernel, namely SUSE's 2.6.34.4-0.1-desktop. Any feature missing in that
>> kernel latest KVM depends for proper tsc/kvm-clock handling? If you have
>> any concerns, I could try to run kvm.git natively later on.
> 
> In case you aren't aware of it, 'make localmodconfig' is an easy way to
> transition from a distro kernel to a locally built kernel.
> 

I am aware of it. But this doesn't remove the need to shut down my
session and reboot the notebook - something I usually avoid for weeks or
even longer.

Jan


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