[Xen-devel] [PATCH][VTD] fix interrupt remapping to handle SMI R

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Subject:	[Xen-devel] [PATCH][VTD] fix interrupt remapping to handle SMI RTE's with uninitialized reserved fields
From:	"Kay, Allen M" <allen.m.kay@xxxxxxxxx>
Date:	Fri, 7 Nov 2008 23:23:51 -0800
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Cc:	"Han, Weidong" <weidong.han@xxxxxxxxx>, "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>
Delivery-date:	Fri, 07 Nov 2008 23:24:23 -0800
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Thread-topic:	[PATCH][VTD] fix interrupt remapping to handle SMI RTE's with uninitialized reserved fields

Some BIOS does not zero out reserve fields in IOAPIC RTE's.  clear_IO_APIC() 
zeroes out all RTE's except for RTE with MSI delivery type.  This is a problem 
when the host OS converts SMI delivery type to some other type but leaving the 
reserved field uninitialized.  This can cause interrupt remapping table out of 
bound error if "format" field is 1 and the uninitialized "index" field has a 
value that that is larger than the maximum index of interrupt remapping table.

Signed-off-by: Allen Kay <allen.m.kay@xxxxxxxxx>

vtd_11072.patch
Description: vtd_11072.patch

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[Xen-devel] [PATCH][VTD] fix interrupt remapping to handle SMI RTE's wit