[Xen-devel] Fix print_vtd_entries walk VTd mapping table

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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-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

vtd.patch
Description: vtd.patch

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[Xen-devel] Fix print_vtd_entries walk VTd mapping table