[Xen-users] Where is the code for passthrough a PCI device to a

To:	xen-user <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject:	[Xen-users] Where is the code for passthrough a PCI device to a PV?
From:	jiang wang <jwangzju@xxxxxxxxxxxx>
Date:	Tue, 24 Mar 2009 23:15:59 +0800 (CST)
Delivery-date:	Tue, 24 Mar 2009 08:16:47 -0700
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Hi:

I am trying to understand the code for passthrough a PCI device to a PV on i386 CPU. What code should I read? I know that linux-xen\drivers\xen\pciback and pcifront is the backend and the frontend for the PCI bus. But I think there should be some other code to allow a domU to access the real device, right?

I found some code in xen/common/domctrl.c which do the access control for the io memory. Is that all?
What happened when I use a PCI option for "xm create" command to pass-through the device? Where is the code for starting a domU?

Thanks.

Regards,

Jiang

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[Xen-users] Where is the code for passthrough a PCI device to a PV?