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Re: [Xen-devel] [PATCH 3/5] vtdt: Modify vlapic code to add vtdt support
| To: | "Wei, Gang" <gang.wei@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH 3/5] vtdt: Modify vlapic code to add vtdt support |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Tue, 14 Dec 2010 09:56:49 +0000 |
| Cc: | |
| Delivery-date: | Tue, 14 Dec 2010 01:59:37 -0800 |
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| Thread-topic: | [Xen-devel] [PATCH 3/5] vtdt: Modify vlapic code to add vtdt support |
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On 14/12/2010 09:30, "Wei, Gang" <gang.wei@xxxxxxxxx> 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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