From: Matt Mullins <mmullins@mmlx.us>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
Subject: Re: Live migration locks up 3.2 guests in do_timer(ticks ~ 500000)
Date: Tue, 11 Nov 2014 11:57:03 -0800 [thread overview]
Message-ID: <20141111195703.GF29098@hydra.tuxags.com> (raw)
In-Reply-To: <544F5C0A.1040504@redhat.com>
On Tue, Oct 28, 2014 at 10:04:10AM +0100, Paolo Bonzini wrote:
> can you test using QEMU from git://git.qemu-project.org/qemu.git?
That seems to work great, yes.
Looking through the commit history, I see:
kvmclock: Ensure time in migration never goes backward
kvmclock: Ensure proper env->tsc value for kvmclock_current_nsec calculation
Assuming those are the right fixes for this issue, are they suitable to request
backported to distros' qemu 2.0 branches? The merge commit for them seemed to
indicate they were problematic at first.
On second thought - I found the qemu-devel threads about reverting them in the
2.1 timeframe, so I'm going to do a little more research before I start trying
to suggest how to fix for existing install-base.
next prev parent reply other threads:[~2014-11-11 20:04 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-08 5:54 Live migration locks up 3.2 guests in do_timer(ticks ~ 500000) Matt Mullins
2014-09-08 8:18 ` Paolo Bonzini
2014-09-08 15:56 ` Matt Mullins
2014-09-08 16:18 ` Paolo Bonzini
2014-09-08 16:39 ` Matt Mullins
2014-09-10 6:53 ` Matt Mullins
2014-09-15 18:14 ` Matt Mullins
2014-09-16 8:42 ` Paolo Bonzini
2014-10-27 18:42 ` Matt Mullins
2014-10-28 9:04 ` Paolo Bonzini
2014-11-11 19:57 ` Matt Mullins [this message]
2014-11-12 8:59 ` Paolo Bonzini
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