From mboxrd@z Thu Jan  1 00:00:00 1970
From: Zachary Amsden <zamsden@redhat.com>
Subject: Re: [PATCH] KVM: x86: Convert tsc_write_lock to raw_spinlock
Date: Fri, 04 Feb 2011 16:03:06 -0500
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Cc: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>,
	kvm <kvm@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
To: Jan Kiszka <jan.kiszka@siemens.com>
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On 02/04/2011 04:49 AM, Jan Kiszka wrote:
> Code under this lock requires non-preemptibility. Ensure this also over
> -rt by converting it to raw spinlock.
>    

Oh dear, I had forgotten about that.  I believe kvm_lock might have the 
same assumption in a few places regarding clock.