| |
|
 |
|
 |
|
|
|
| |
|
|
xen-users
Re: [Xen-users] Problem with VT-d on Mainboard Intel DQ45CB
Hi.
Some questions and comments inline.
On Thu, Oct 23, 2008 at 3:25 AM, Franz Regensburger
<Franz.Regensburger@xxxxxxxx> wrote:
> Hello all,
>
> this mail is related to a post by Axel Schöner that I found at
> http://article.gmane.org/gmane.comp.emulators.xen.user/40621
> when I was searching the WEB about solutions to my problem.
>
> I would like to confirm that VT-d with XEN 3.3 kernel 2.6.18.8 on mainboard
> Intel DQ45CB seems to be broken.
>
> Survey (details are down below)
> ---------------------------------------
>
> Whenever I boot my Xen 2.6.18.8 (Xen 3.3) with kernel parameter iommu=1
> the boot process freezes.
>
> I see:
> ...
> (XEN) Intel VT-d has been enabled
> ...
> (XEN) HVM: VMX enabled
> ...
> (XEN) I/O virtualisation enabled
> (XEN) I/O virtualisation for PV guests disabled
> Here the boot process freezes
>
I am surprised it freezes here.
A serial console debug might be of help here see:
http://xen.markmail.org/search/?q=serial%20console%20debugging#query:serial%20console%20debugging+page:1+mid:scjkellgexgofu6d+state:results
> Does anybody else suffer from the same problem (VT-d with Intel board DQ45CB)?
> Any suggestions about a solution?
>
This VT-d stuff is quite new and the Intel developers really need help
testing and debugging.
>From the VTdHowTo on the Xen wiki I see:
kernel /boot/xen.gz com1=115200,8n1 console=com1 iommu=1
module /boot/vmlinuz-2.6.18.8-xen root=LABEL=/ ro xencons=ttyS
console=tty0 console=ttyS0, pciback.hide=(01:00.0)(03:00.0)
module /boot/initrd-2.6.18-xen.img
There are some differences in the console's used with yours.
> title Xen 3.3.0 / kernel 2.6.18.8-xen backhide the ATI Radeon
> root (hd0,0)
> #kernel /xen-3.3.0.gz console=vga noreboot max_loop=128
> dom0_mem=1024M iommu=1
> kernel /xen-3.3.0.gz console=vga noreboot max_loop=128 dom0_mem=1024M
> module /vmlinuz-2.6.18.8-xen root=/dev/mapper/RootVG-root ro
> console=tty0 pciback.hide=(01:00.0)(01:00.1)
> module /initrd-2.6.18.8-xen.img
> savedefault
> Additional problem respectively disappointments with the board DB45CB
> ---------------------------------------------------------------------------------------
>
> Now, I just need to get rid of my frustrations. Of course, some or all of
> them might be caused by my
> personal lack of Linux or Xen experience ...
>
> - I am not able to configure the onboard GB ethernet adapter on Linux.
> Even the e1000e driver
This works for me in Ubuntu (not Xen in my experience yet).
> susi:/lib/modules/2.6.26-bpo.1-amd64/kernel/drivers/net/e1000e
> of newer kernels does not seam to support that adapter.
> As a fix I run addtional NICs in PCI and PCIe slots (inetl 1000 pro, various
> brands)
> The onboard LAN is unused.
>
> - I am not able to get Xorg running with the onboard graphics adapter.
> There is no support for the Q45 Chipset (at least not in the 2.6.18-6,
> 2.6.24 and of course not in the xen kernels)
>
I would try the latest Ubuntu --Intrepid is at RC now-- (even just the
liveCD here for testing)
> In summary I am rather disappointed by the board DB45CB as a platform for XEN.
> - VT-d broken. No PCI backend hiding with HVM guest possible
> - no onboard LAN on linux
> - no remote management from linux
> - no onboard graphics on linux
> - PCIe x16 graphics with Xen kernel broken
>
Living on the cutting edge is like this sometimes, it will only get better.
> On the positive side I can state the following results:
>
> - Xen host without X11 (xorg) runs perfectly (especially fast).
> - I was able to configure and run a WinXP HVM guest (although without VT-d
> and PCI backend hiding)
>
> Is there someone out who can show me light at the end of the tunnel?
>
Here are my suggestions and things to watch for.
The Intel developers are quite good and responsive on xen-devel,
provided that you are willing to do
some testing/debugging and applying patches etc.
To get to the point where you can be helpful, you will need to get the
latest xen-unstable.
hg clone http://xenbits.xensource.com/xen-unstable.hg
hg clone http://xenbits.xensource.com/linux-2.6.18-xen.hg
cd xen-unstable
make world
Follow these again
http://wiki.xensource.com/xenwiki/VTdHowTo
Do you testing again and send a shorter, less verbose email to xen-devel.
Give the key results and the most descriptive and useful snippets of
the appropriate logs.
They will work likely work with you, especially since there are quite
a few others that
are running up against this problem and are also likely to help with testing.
The Light at the end of the tunnel on the Xen/Linux side of things
will happen as
the Xen dom0 gets into mainline. Progress on this seems to be going pretty well.
see:
http://wiki.xensource.com/xenwiki/XenParavirtOps
http://xenbits.xensource.com/paravirt_ops/patches.hg
Hope that gives you a better sense and gets the debugging process underway.
Best Regards,
Todd
--
Todd Deshane
http://todddeshane.net
http://runningxen.com
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
|
|
|
| |
|
Home