From: "Roedel, Joerg" <Joerg.Roedel@amd.com>
To: Jan Kiszka <jan.kiszka@web.de>
Cc: Zachary Amsden <zamsden@redhat.com>, kvm <kvm@vger.kernel.org>
Subject: Re: Bug in KVM clock backwards compensation
Date: Thu, 28 Apr 2011 09:22:09 +0200 [thread overview]
Message-ID: <20110428072209.GH20365@amd.com> (raw)
In-Reply-To: <4DB911D9.3010409@web.de>
On Thu, Apr 28, 2011 at 03:06:01AM -0400, Jan Kiszka wrote:
> And /me still wonders (like I did when this first popped up) if the
> proper place of determining TSC stability really have to be KVM.
>
> If the Linux core fails to detect some instability and KVM has to jump
> in, shouldn't we better improve the core's detection abilities and make
> use of them in KVM? Conceptually this looks like we are currently just
> working around a core deficit in KVM.
Yes, good question. Has this ever triggered on a real machine (not
counting the suspend/resume issue in)?
Regards,
Joerg
--
AMD Operating System Research Center
Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632
next prev parent reply other threads:[~2011-04-28 7:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-28 6:59 Bug in KVM clock backwards compensation Zachary Amsden
2011-04-28 7:06 ` Jan Kiszka
2011-04-28 7:22 ` Roedel, Joerg [this message]
2011-04-28 19:06 ` Zachary Amsden
2011-04-28 22:38 ` Jan Kiszka
2011-04-28 17:48 ` Zachary Amsden
2011-04-28 7:13 ` Roedel, Joerg
2011-04-28 18:34 ` Zachary Amsden
2011-04-28 20:20 ` Joerg Roedel
2011-04-29 3:00 ` Zachary Amsden
2011-04-29 8:40 ` Joerg Roedel
2011-04-29 18:17 ` Zachary Amsden
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