Re: [Xen-devel] Booting Xen 3.4 with iommu=1 causes boot to hang

[wei zhou <weizhou.sir@xxxxxxxxx>]

Hi Keir :
     "iommu_inclusive_mapping" ? I will try . Did the xen-3.4.0 version have  much more features to surpport graphic pass through? I am working on the PCIE graphic pass through test. Could this work done without modifing the source code? Just throuhing  some configuriation works .

2009/5/24 Keir Fraser <keir.fraser@xxxxxxxxxxxxx>

On 24/05/2009 12:09, "Tom Rotenberg" <tom.rotenberg@xxxxxxxxx> wrote:

> It looks like some kind of a problem in Xen IOMMU code, no? Anyone has any
> clue regarding this?

There are plenty of broken BIOSes out there that don't correctly support
VT-d. Try adding iommu_inclusive_mapping as an extra Xen boot parameter --
this workaround is often successful.

 -- Keir

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-- 
Best regards ！
Wei Zhou
E-mail: weizhou.sir@xxxxxxxxx

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