Re : Re : Re : Re : [Xen-devel] Re: Patches for VGA-Passthrough XEN 4.2 unstable

[David TECHER <davidtecher@xxxxxxxx>]

Please have a look on http://wiki.xensource.com/xenwiki/VTdHowTo.

I've just applied what it is recommended on the wiki. It works  like a charm.

For VGA,

========

you can use PCI_STUB, I do not use it as module

root@mercury:~# grep pci_stub -i /boot/config-2.6.39.3
CONFIG_PCI_STUB=y

root@mercury:~# lspci |grep VGA
01:00.0 VGA compatible controller: nVidia Corporation Device 0de0 (rev a1)



root@mercury:~# lspci -s 01:00.0 -n
01:00.0 0300: 10de:0de0 (rev a1)

Create a script with the following content

root@mercury:~# grep -vE '^(#|$)' start_windows.sh
echo "10de 0de0" > /sys/bus/pci/drivers/pci-stub/new_id
echo "0000:01:00.0" > /sys/bus/pci/devices/0000:01:00.0/driver/unbind
echo "0000:01:00.0" > /sys/bus/pci/drivers/pci-stub/bind
xl  create /etc/xen/machines/mercury-xen03.cfg

For KeyBoard and Mouse
===================

Use passthrough.

root@mercury:~# grep CONFIG_XEN_PCIDEV_BACKEND=  /boot/config-2.6.39.3
CONFIG_XEN_PCIDEV_BACKEND=y

I've got two USB controllers (1: mouse + keyboard, 2: for sound Logitech USB Speaker)

root@mercury:~# lspci |grep USB
00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 05)
00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 05)

Put it on grub so that dom0 will not use it

root@mercury:~# grep permissive /boot/grub/grub.cfg
        module  /boot/vmlinuz-2.6.39.3 placeholder root=UUID=1cd457ae-85f4-4626-8f94-1f444fcf6d5c ro nomodeset xen-pciback.permissive xen-pciback.hide=(00:1a.0)(00:1d.0) quiet

In my  domU configuration file
======================
root@mercury:~# grep ^pci /etc/xen/machines/mercury-xen03.cfg
pci  = [ '01:00.0','00:1a.0','00:1d.0' ]

---

De : komkon555 <komkon555@xxxxxxxxxx>
À : xen-devel@xxxxxxxxxxxxxxxxxxx
Envoyé le : Vendredi 9 Septembre 2011 9h54
Objet : Re: Re : Re : Re : [Xen-devel] Re: Patches for VGA-Passthrough XEN 4.2 unstable

          Hi. There is the promised report to JavMV: with fixes on dsd are
your patches also functional. Windows XP starts and GTX260 works perfect
with driver version 275.33.
          Some news more: The best results I got with this configuration:
xen 4.1-unstable changeset 21668 (patched clearly with these
http://lists.xensource.com/archives/html/xen-devel/2010-05/msg00441.html
patches , dsd fixed according to David TECHER) + jeremi xen kernel 2.6.32.45
(xenfs static). This configuration works excellent both: with primary and
secondary vga-adapter (GTX260). There are two Problem with all
configurations:
1. DomU can be started only once. Being  correctly shouted  down, starts
DomU no more.
2. Physical usb- keyboard and mouse can not be assigned to DomU (regular usb
assignment has no effect, PVUSB crashes)

Best regards
Kom.


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