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[Xen-devel] Re: [PATCH] [Bugfix][pv-ops] Guest get stucked after migrati

To: Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH] [Bugfix][pv-ops] Guest get stucked after migration
From: Frank Pan <frankpzh@xxxxxxxxx>
Date: Tue, 22 Mar 2011 10:42:42 +0800
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Jeremy Fitzhardinge <Jeremy.Fitzhardinge@xxxxxxxxxx>
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> Does the tree you are running have e7a3481c0246 (backported to the
> 2.6.32 longterm tree in 2.6.32.30 as 595b62a8acfb) in it? That commit
> seems to deal with a very similar problem to this.

Yes, I have that commit, and It's related.

The commit you mentioned deals with the issue that un-monotone xen
uptime can stuck the pvclock code.
On the other hand, the issue I met is happened in the xen clocksource
layer. The cycle count get from pvclock can be un-monotone and make
the clocksource code stucked.

-- 
潘震皓, Frank Pan

Computer Science and Technology
Tsinghua University

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