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[Xen-devel] [RFC][PATCH][VTD] EPT/VT-d page table sharing

To: Wei Wang2 <wei.wang2@xxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxx>, Keir Fraser <keir@xxxxxxx>
Subject: [Xen-devel] [RFC][PATCH][VTD] EPT/VT-d page table sharing
From: "Kay, Allen M" <allen.m.kay@xxxxxxxxx>
Date: Wed, 8 Dec 2010 10:38:38 -0800
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Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Han, Weidong" <weidong.han@xxxxxxxxx>
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Thread-topic: [RFC][PATCH][VTD] EPT/VT-d page table sharing
Attached is EPT/VT-d page table sharing patch I mentioned earlier.  Basic idea 
is to leverage 2MB and 1GB page size support in EPT by having VT-d using the 
same page tables as EPT.  When EPT page table changes, flush VT-d IOTLB cache.

We are still further testing this patch but would appreciate feedbacks.

Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
Signed-off-by: Allen Kay <allen.m.kay@xxxxxxxxx>

Attachment: share12083.patch
Description: share12083.patch

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