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[Xen-devel] Fix print_vtd_entries walk VTd mapping table

To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] Fix print_vtd_entries walk VTd mapping table
From: "Yang, Xiaowei" <xiaowei.yang@xxxxxxxxx>
Date: Wed, 9 Jan 2008 17:55:41 +0800
Delivery-date: Wed, 09 Jan 2008 02:08:12 -0800
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Thread-index: AchSpcsso9GQB378TFizK29iwblyOQ==
Thread-topic: Fix print_vtd_entries walk VTd mapping table
DMA request to above guest physical memory will cause VTd fault, in
which
print_vtd_entries() tries to walk VTd mapping table. However, during
walking, current Xen code didn't check if the PTE is valid and may
access to invalid memory address.

Signed-off-by: Xiaowei Yang <xiaowei.yang@xxxxxxxxx>


Regards, 
Xiaowei 

Attachment: vtd.patch
Description: vtd.patch

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