From: Keir Fraser <keir@xen.org>
To: "Wei, Gang" <gang.wei@intel.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: [PATCH 3/5] vtdt: Modify vlapic code to add vtdt support
Date: Tue, 14 Dec 2010 09:56:49 +0000 [thread overview]
Message-ID: <C92CEFE1.CCE3%keir@xen.org> (raw)
In-Reply-To: <F26D193E20BBDC42A43B611D1BDEDE7124EADAFD75@shsmsx502.ccr.corp.intel.com>
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
next prev parent reply other threads:[~2010-12-14 9:56 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-14 3:27 [PATCH 3/5] vtdt: Modify vlapic code to add vtdt support Wei, Gang
2010-12-14 7:35 ` Keir Fraser
2010-12-14 8:22 ` Wei, Gang
2010-12-14 8:48 ` Keir Fraser
2010-12-14 9:13 ` Wei, Gang
2010-12-14 9:59 ` Keir Fraser
2010-12-14 10:01 ` Keir Fraser
2010-12-14 10:18 ` Tim Deegan
2010-12-14 9:21 ` Keir Fraser
2010-12-14 9:30 ` Wei, Gang
2010-12-14 9:56 ` Keir Fraser [this message]
2010-12-14 10:13 ` Wei, Gang
2010-12-14 10:29 ` Wei, Gang
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