From b7e60c5aedd2b63f16ef06fde4f81ca032211bc5 Mon Sep 17 00:00:00 2001
From: Marcelo Tosatti <mtosatti@redhat.com>
Date: Thu, 28 May 2015 20:20:41 -0300
Subject: [PATCH] KVM: x86: zero kvmclock_offset when vcpu0 initializes
 kvmclock system MSR

Initialize kvmclock base, on kvmclock system MSR write time,
so that the guest sees kvmclock counting from zero.

This matches baremetal behaviour when kvmclock in guest
sets sched clock stable.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
[Remove unnecessary comment. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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