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Re: [Xen-devel] Intel VT-d/Neocleus 1:1 mreged code for PCI passthrough


  • To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • From: Jun Koi <junkoi2004@xxxxxxxxx>
  • Date: Tue, 1 Sep 2009 19:11:28 +0900
  • Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Tue, 01 Sep 2009 03:12:21 -0700
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On Tue, Sep 1, 2009 at 7:08 PM, Keir Fraser<keir.fraser@xxxxxxxxxxxxx> wrote:
> On 01/09/2009 10:41, "Jun Koi" <junkoi2004@xxxxxxxxx> wrote:
>
>> On Sun, Aug 30, 2009 at 4:50 PM, Keir Fraser<keir.fraser@xxxxxxxxxxxxx> 
>> wrote:
>>> For passthrough to HVM guests without hardware IOMMU (e.g., VT-d), I
>>> developed the attached prototype patch. I think this may already be in the
>>> XCI tree. It also applies directly to Xen 3.4 branch, and could be applied
>>> quite easily with a small amount of manual intervention to xen-unstable. If
>>> passthough on 'old' system without hardware assistance is what you're after,
>>> you might want to give the patch a go.
>>
>> Could you confirm that this patch alone is enough?
>>
>> I applied the patch against unstable code, and Xen hang up (or seems
>> to hang up) in the middle of booting up Xen, with a black screen.
>
> The patch may need a bit more tweaking for -unstable. Let me give it a go.

Actually that patch doesnt cleanly applied to -unstable, and I had to
modify a bit of that patch manually, so it could apply to -unstable.
But perhaps that is not enough?

I look forward to your patch.

Thanks,
J

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