[Xen-devel] xc.test_assign_device() doesn't work for devices ass

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Subject:	[Xen-devel] xc.test_assign_device() doesn't work for devices assigned via the traditional PCI passthrough(without VT-d).
From:	"Cui, Dexuan" <dexuan.cui@xxxxxxxxx>
Date:	Wed, 25 Feb 2009 19:27:41 +0800
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Thread-topic:	xc.test_assign_device() doesn't work for devices assigned via the traditional PCI passthrough(without VT-d).

e.g., with xen parameter 'iommu=on,no-pv', after we assign a device to pv 
guest1, we can still assign the device to hvm guest2 because when xend creates 
guest2, it's wrongly told by xc.test_assign() the device is not assigned.

To judge if a device has been assigned, xc.test_assign() is not enough; maybe 
we also have to scan xenstore?

Thanks,
-- Dexuan

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[Xen-devel] xc.test_assign_device() doesn't work for devices assigned vi