3D Desktop at Xen 4.0.1-rc6 (2.6.32.19) on top of Ubuntu 10.04 Server

The most recent pvops kernel 2.6.32.19 allows to enable kernel modesetting (KMS) under Xen 4.0.1-rc6 on top of Ubuntu Lucid Server and Fedora 13. Actually , current setup of Xen 4.0.1&PVOPS on top of Ubuntu 10.04 Server is different from http://wiki.xen.org/xenwiki/Xen4.0 : How to install Xen 4.0 ([1]) and brief instructions follow bellow. Status of the problem in general along with list of video adapters been tested may be viewed at http://wiki.xensource.com/xenwiki/XenPVOPSDRM ([3]) . Current test has been done with Radeon HD 4650, which is not on list above.
Install packages bellow :-

apt-get install libcurl4-openssl-dev \
xserver-xorg-dev \
mercurial gitk \
build-essential \
libncurses5-dev \
uuid-dev gawk \
gettext texinfo bcc \
libncurses5-dev dpkg-dev debhelper \
iasl texinfo bridge-utils bison flex \
kernel-package fakeroot

apt-get build-dep xen-3.3

Setup pvops kernel 2.6.32.19 with KMS enabled.
Now clone Jeremy Fitzhardinge git repository and checkout branch xen/stable-2.6.32.x

cd /usr/src
git clone
git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git linux-2.6-xen
cd linux-2.6-xen
git checkout -b xen/stable-2.6.32.x origin/xen/stable-2.6.32.x
make menuconfig # and setup Xen Dom0 support






Build kernel in Debian way. Config may be viewed here

export CONCURRENCY_LEVEL=(number_of_cores) +1
make-kpkg clean
fakeroot make-kpkg --initrd --append-to-version=-xen kernel-image kernel-headers
dpkg -i ../linux-image-2.6.32.19-xen_2.6.32.19-xen-10.00.Custom_amd64.deb
update-initramfs -c -k 2.6.32.19-xen

Set up Xen 4.0.1-rc6

# cd /usr/src
# hg clone http://xenbits.xensource.com/staging/xen-4.0-testing.hg
# cd xen-4.0-testing.hg
# make xen
# make tools
# make install-xen
# make install-tools PYTHON_PREFIX_ARG=

Set up xend,xendomains to run as services

update-rc.d xend defaults 20 21
update-rc.d xendomains defaults 21 20

Reboot in Xen with grub entry

menuentry "Xen 4.0.1-rc6 / Ubuntu 10.04 kernel 2.6.32.19" {
insmod ext2
set root='(hd0,9)'
multiboot (hd0,9)/boot/xen.gz dummy=dummy
module (hd0,9)/boot/vmlinuz-2.6.32.19-xen dummy=dummy root=/dev/sdb5 ro console=tty0
module (hd1,5)/boot/initrd.img-2.6.32.19-xen
}

Verify environment

root@ServerLDX:~# xm info
host : ServerLDX
release : 2.6.32.19-xen
version : #3 SMP Tue Aug 17 17:45:48 MSD 2010
machine : x86_64
nr_cpus : 4
nr_nodes : 1
cores_per_socket : 4
threads_per_core : 1
cpu_mhz : 2833
hw_caps : bfebfbff:20100800:00000000:00000940:0408e3fd:00000000:00000001:00000000
virt_caps : hvm
total_memory : 8190
free_memory : 1024
node_to_cpu : node0:0-3
node_to_memory : node0:1024
node_to_dma32_mem : node0:1024
max_node_id : 0
xen_major : 4
xen_minor : 0
xen_extra : .1-rc6
xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler : credit
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset : Fri Aug 13 15:06:24 2010 +0100 21321:5e8df2d2ef6f
xen_commandline : dummy=dummy
cc_compiler : gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5)
cc_compile_by : root
cc_compile_domain :
cc_compile_date : Sun Aug 15 18:49:37 MSD 2010
xend_config_format : 4

root@ServerLDX:~# brctl show
bridge name bridge id STP enabled interfaces
eth0 8000.90e6ba2d11eb no peth0
virbr0 8000.000000000000 yes

Dmesg fragment

[drm] radeon: Initializing kernel modesetting.
[drm] register mmio base: 0xFE8E0000
[drm] register mmio size: 65536
ATOM BIOS: 11X
[drm] Clocks initialized !
mtrr: type mismatch for d0000000,10000000 old: write-back new: write-combining
[drm] Detected VRAM RAM=256M, BAR=256M
[drm] RAM width 128bits DDR
[TTM] Zone kernel: Available graphics memory: 4074556 kiB.
[TTM] Zone dma32: Available graphics memory: 2097152 kiB.
[drm] radeon: 256M of VRAM memory ready
[drm] radeon: 512M of GTT memory ready.
[drm] Loading RV730 CP Microcode
platform radeon_cp.0: firmware: requesting radeon/RV730_pfp.bin
platform radeon_cp.0: firmware: requesting radeon/RV730_me.bin
[drm] GART: num cpu pages 131072, num gpu pages 131072
[drm] ring test succeeded in 1 usecs
[drm] radeon: ib pool ready.
[drm] ib test succeeded in 0 usecs
[drm] Radeon Display Connectors
[drm] Connector 0:
[drm] HDMI-A
[drm] DDC: 0x7f10 0x7f10 0x7f14 0x7f14 0x7f18 0x7f18 0x7f1c 0x7f1c
[drm] Encoders:
[drm] DFP2: INTERNAL_UNIPHY1
[drm] Connector 1:
[drm] VGA
[drm] DDC: 0x7e20 0x7e20 0x7e24 0x7e24 0x7e28 0x7e28 0x7e2c 0x7e2c
[drm] Encoders:
[drm] CRT2: INTERNAL_KLDSCP_DAC2
[drm] Connector 2:
[drm] DVI-I
[drm] DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c
[drm] Encoders:
[drm] CRT1: INTERNAL_KLDSCP_DAC1
[drm] DFP1: INTERNAL_UNIPHY
[drm] fb mappable at 0xD0141000
[drm] vram apper at 0xD0000000
[drm] size 5242880
[drm] fb depth is 24
[drm] pitch is 5120
executing set pll
executing set crtc timing
[drm] TV-11: set mode 1280x1024 19
Console: switching to colour frame buffer device 160x64
fb0: radeondrmfb frame buffer device
registered panic notifier
[drm] Initialized radeon 2.0.0 20080528 for 0000:01:00.0 on minor 0

Setup Libvirt 0.8.2 per [2] and test virt-install F13 for instance.





OSOL 134 running as PV guest



Snapshots for Fedora 13





References
View http://wiki.xen.org/xenwiki/Xen4.0
Tutorials to install Xen 4.0
1. Xen 4.0 on Ubuntu 10.04: http://bderzhavets.wordpress.com/2010/04/24/set-up-ubuntu-10-04-server-pv-domu-at-xen-4-0-dom0-pvops-2-6-32-10-kernel-dom0-on-top-of-ubuntu-10-04-server/
2. Xen 4.0 + virt-manager on Ubuntu 10.04: http://bderzhavets.wordpress.com/2010/06/02/setup-libvirt-0-8-0-xen-4-0-on-top-of-ubuntu-10-04-server-via-daniel-baumann-virtualization-ppa/
3.http://wiki.xensource.com/xenwiki/XenPVOPSDRM

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