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RE: [Xen-devel] vm86 - DCC probes don't work

To: "Rik van Riel" <riel@xxxxxxxxxx>, "Stephan Diestelhorst" <sd386@xxxxxxxxx>
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Tue, 22 Feb 2005 22:59:19 -0000
Cc: "Jon Smirl" <jonsmirl@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxxx>, <ian.pratt@xxxxxxxxxxxx>, <ian.pratt@xxxxxxxxxxxx>
Delivery-date: Tue, 22 Feb 2005 23:04:00 +0000
List-id: List for Xen developers <xen-devel.lists.sourceforge.net>
Thread-index: AcUZLkxAcQR8oaNFQke+DXdzSqabrwAAPEQQ
Thread-topic: [Xen-devel] vm86 - DCC probes don't work

> I wonder if we're just not mapping certain physical addresses
> into vm86 mode (in domain 0) that the program expects there to
> be ...

If ddcprobe is using vm86 mode shouldn't it be mapping the appropriate
section of /dev/mem that it expects the 16bit code to access? Its not
attempting BIOS calls is it? 

BTW, where are the 'moving parts' of ddcprobe? I can only find the
python wrapper.  

Ian


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