From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir@xen.org>
Subject: Re: [PATCH 3/5] vtdt: Modify vlapic code to add vtdt
	support
Date: Tue, 14 Dec 2010 09:56:49 +0000
Message-ID: <C92CEFE1.CCE3%keir@xen.org>
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To: "Wei, Gang" <gang.wei@intel.com>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
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On 14/12/2010 09:30, "Wei, Gang" <gang.wei@intel.com> wrote:

>> Writing any value to LVTT zaps TMICT,TMCCT,MSR_TDT? That seems pretty
>> unlikely to me! This obviously has effects on behaviour outside TDT
>> emulation as it affects TMICT/TMCCT emulation. Looks dangerous, as well as
>> wrong.
> 
> It should be better to do the zaps only while the mode bits of LVTT changes.

What is real hardware behaviour here? I don't see any zappings documented.

 -- Keir