RE: [Xen-devel] Vt-d not working with 3.4.1

["Bonenkamp, Ralf" <ralf.bonenkamp@xxxxxxxx>]

Dear Teo,

I tried all combinations
- kernel /xen.gz iommu=1
- kernel /xen.gz iommu_inclusive_mapping=1
- kernel /xen.gz iommu=1 iommu_inclusive_mapping=1

And got the same result at xm dmesg on my mobo ;-)

I noticed that there is another switch mentioned named 'vtd=1' in some 
postings. The wiki at http://wiki.xensource.com/xenwiki/VTdHowTo does not 
mention any of those switches. Hopefully I can spare time in the next days to 
sort this switches out and prepare some sort of beginners guide to this topic...

Regards,
Ralf


-----Original Message-----
From: Teo En Ming (Zhang Enming) [mailto:enming.teo@xxxxxxxxxxxxxxx] 
Sent: Mittwoch, 19. August 2009 04:44
To: pasik@xxxxxx; Bonenkamp, Ralf
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-devel] Vt-d not working with 3.4.1

Hi,

Is it not sufficient to parse iommu=1 only?

kernel /xen.gz iommu=1

We should also add iommu_inclusive_mapping=1?

So it becomes

kernel /xen.gz iommu=1 iommu_inclusive_mapping=1

Regards,
 
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering)
BEng(Hons)(Mechanical Engineering) 
Technical Support Engineer 
Information Technology Department
Asiasoft Online Pte Ltd
Tampines Central 1 #04-01 Tampines Plaza 
Singapore 529541
Republic of Singapore
Mobile: +65-9648-9798
MSN: teoenming@xxxxxxxxxxx
-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Pasi Kärkkäinen
Sent: Monday, August 17, 2009 10:32 PM
To: Bonenkamp, Ralf
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Vt-d not working with 3.4.1

On Sat, Aug 08, 2009 at 11:53:23PM +0200, Bonenkamp, Ralf wrote:
> Hi folks,
> 
> currently I try to setup a new xen host v3.4.1 on top of a Asus P5E-VM
> DO (latest BIOS, Vt-d capable and enabled in BIOS) to migrate my
> extisting HVMs (Win2k3 server) running on Xen v3.3.0 to a new home. I
> want to switch over to 3.4.1 to (hopefully!) passthrough my ISDN board
> to a HVM domU.
> Unfortunate there seem some issue with the VT-d DMAR tables which is
> beyond my knowledge and probably someone has some hint how to proceed?
> :-)
>

Well did you try iommu_inclusive_mapping=1, like it suggests ?
 
> (XEN) [VT-D]dmar.c:401: RMRR address range not in reserved memory base =
> 7d600000 end = 7dffffff; iommu_inclusive_mapping=1 parameter may be
> needed.
> (XEN) Intel VT-d DMAR tables have been parsed.

-- Pasi

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