From: Zachary Amsden <zamsden@redhat.com>
Date: Fri, 20 Aug 2010 08:07:24 +0000 (-1000)
Subject: KVM: x86: Fix deep C-state TSC desynchronization
X-Git-Tag: v2.6.37-rc1~142^2~164
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48434c20e18d59001469699fcaaf9cf30b815a20;p=pandora-kernel.git

KVM: x86: Fix deep C-state TSC desynchronization

When CPUs with unstable TSCs enter deep C-state, TSC may stop
running.  This causes us to require resynchronization.  Since
we can't tell when this may potentially happen, we assume the
worst by forcing re-compensation for it at every point the VCPU
task is descheduled.

Signed-off-by: Zachary Amsden <zamsden@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---

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