Re: [Xen-devel] IOMMU issue on HP DL385g7 servers - workaround_bogus_bios / workaround_bug_bios doesn't help

[Mark Schneider <ms@xxxxxxxxxxxxxxxxxxxxxx>]

Thank you for your message Konrad.

>  Which link is that for creating a live image with Xen?
Sorry for confusion - currently it is only a link to a file with 
instruction where to get last images (one for sqeeze and one for wheezy) 
from and some additional information.
http://www.it-infrastrukturen.com/fileadmin/linux/debian-live-xen/README.xen
# ---

rsync -avP 
rsync://www.it-infrastrukturen.ch/ftp/xen40-squeeze-amd64-live-gnome-binary-hybrid.iso
 .

# ---

As I need HVM with IOMMU support to passthrough some PCI-devices to domU 
domains, I am looking for a workaround for missing IOMMU-flag support in 
BIOS of HP DL385g7. Server hardware from other vendors can work 
correctly. For this reason I have also created a xen live image for 
wheezy (the available one with kernel 2.6.39-2 amd64 and non booting one 
with 3.0-rc6 (non available yet for downloads)), however there are some 
kernel 3.0-rc6 issues with aufs support so the wheezy image doesnt boot 
as expected with kernel 3.0-rc6)
I use debian live builder to create these live images. If you need some 
detailed instruction how to create such images with debian live please 
let me know. It is a bunch of config files, some hook scripts, local 
packages (like firmware-bnx2 ... you need for HP DL servers) and xen 
PVM/HVM config examples I copy into the live builder dir structure after 
running "lb config ... " and before running "lb-build ... "
>  Did you try to follow the ParaVirt Wiki for the troubleshooting options? Like
>  ratching up the debug options?
I am not sure what wiki (URL) do you mean exactly. I have read a lot of 
different wiki-pages.
I will check for it.

Regards,
Mark

--
ms@xxxxxxxxxxxxxxxxxxxxxx



Am 14.07.2011 15:34, schrieb Konrad Rzeszutek Wilk:
> On Wed, Jul 13, 2011 at 04:05:54PM +0200, Mark Schneider wrote:
>    
> > Hello,
> >
> > I have cretaed wheezy xen 4.1 debian live image (s. the link below
> > to it) but even I tried different boot options like "iommu=1 |
> >      
> Which link is that for creating a live image with Xen?
>
>    
> > workaround_bios_bug | workaround_bogus_bios" I am getting such entry
> > "(XEN) AMD-Vi: IOMMU not found!" in the log (s. for more details in 
> > http://www.it-infrastrukturen.com/fileadmin/linux/paste/xm_dmesg.xen41_on_DL385g7_NOK.txt
> > )
> >
> > link to xen 4.0 (squeeze) and xen 4.1 (wheezy) debian live images - 
> > http://www.it-infrastrukturen.com/fileadmin/linux/debian-live-xen/README.xen
> >
> > do you have any idea how to solve this issue? - thank you in advance
> > for any hints (different one than killing the hardware vendor (HP)
> > ;) ... for the missing IOMMU BIOS option
> >      
> Did you try to follow the ParaVirt Wiki for the troubleshooting options? Like
> ratching up the debug options?
>    
> > Linux xen41dom0 2.6.39-2-amd64 #1 SMP Wed Jun 8 11:01:04 UTC 2011
> > x86_64 GNU/Linux
> >
> > Thank you in advance for any hints.
> >
> > Regards, Mark
> >
> > --
> > ms@xxxxxxxxxxxxxxxxxxxxxx
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel
> >      
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