From: Marcelo Tosatti <mtosatti@redhat.com>
To: "Liu, Jinsong" <jinsong.liu@intel.com>
Cc: kvm <kvm@vger.kernel.org>, Avi Kivity <avi@redhat.com>
Subject: Re: [QEMU PATCH] kvm: support TSC deadline MSR with subsection
Date: Thu, 13 Oct 2011 12:13:39 -0300 [thread overview]
Message-ID: <20111013151339.GA5039@amt.cnet> (raw)
In-Reply-To: <BC00F5384FCFC9499AF06F92E8B78A9E269B10E4D6@shsmsx502.ccr.corp.intel.com>
On Wed, Oct 12, 2011 at 12:26:12PM +0800, Liu, Jinsong wrote:
> Marcelo,
>
> I just test guest migration from v13 to v12, it failed w/ info
> savevm: unsupported version 13 for 'cpu' v12
> load of migration failed
>
> v13 is new qemu-kvm with tsc deadline timer co-work patch, v12 is old qemu-kvm.
You should try the patch in the first message in this thread, which is a
replacement for the original tsc deadline timer patch.
>
> Marcelo Tosatti wrote:
> > Jinsong, please test this qemu-kvm patch by migrating a guest which is
> > currently using TSC deadline timer. Using subsections avoids breaking
> > migration to older qemu versions when the guest does not make use of
> > TSC deadline feature.
> >
>
> Is subsection used to avoid breaking migration to older qemu?
Yes.
next prev parent reply other threads:[~2011-10-13 15:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-05 19:52 [QEMU PATCH] kvm: support TSC deadline MSR with subsection Marcelo Tosatti
2011-10-12 4:26 ` Liu, Jinsong
2011-10-13 15:13 ` Marcelo Tosatti [this message]
2011-10-13 17:54 ` Liu, Jinsong
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