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[Xen-users] iommu options?

To: "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] iommu options?
From: David White <David.White@xxxxxxxxxxxxxx>
Date: Wed, 2 Feb 2011 21:56:58 +0000
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Thread-topic: iommu options?

Can someone enlighten me on the implications of these iommu parameters?

 

iommu=dom0-passthrough

iommu=dom0-strict

 

xen/drivers/passthrough/iommu.c notes:

dom0-passthrough      No DMA translation at all for Dom0

dom0-strict           No 1:1 memory mapping for Dom0

 

What are the implications of these settings?  Will they affect pci passthrough to HVM guests? To PV guests?

 

This is xen 4.0.1

 

-dmw

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