From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tim Deegan <tim@xen.org>
Subject: Re: lock in vhpet
Date: Thu, 19 Apr 2012 09:27:17 +0100
Message-ID: <20120419082717.GA23663@ocelot.phlegethon.org>
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To: "Zhang, Yang Z" <yang.z.zhang@intel.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, Keir Fraser <keir@xen.org>
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At 05:19 +0000 on 19 Apr (1334812779), Zhang, Yang Z wrote:
> There have no problem with this patch, it works well. But it cannot
> fix the win8 issue. It seems there has some other issues with hpet. I
> will look into it.  Thanks for your quick patch.

The lock in hvm_get_guest_time() will still be serializing the hpet
reads.  But since it needs to update a shared variable, that will need to
haul cachelines around anyway. 

Tim.