XenParavirtOps: Difference between revisions

earlyprintk=xen

$yum install xen

$apt-get install xen

title        pv_ops dom0 debug (2.6.32.27) with serial console
root         (hd0,0)
kernel       /xen-4.0.gz dom0_mem=1024M loglvl=all guest_loglvl=all sync_console console_to_ring com1=115200,8n1 console=com1 lapic=debug apic_verbosity=debug apic=debug iommu=off
module       /vmlinuz-2.6.32.27 ro root=/dev/vg00/lv01 console=hvc0 earlyprintk=xen nomodeset initcall_debug debug loglevel=10
module       /initrd-2.6.32.27.img
  to go to Linus Torvalad's tree. This includes bug-fixes, new features, etc.

$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git linux
$ cd linux

$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git linux
$ cd linux

$ cd /usr/src
$ cd linux
$ git reset --hard
$ git checkout -b upstream/xen origin/upstream/xen
Branch upstream/xen set up to track remote branch refs/remotes/origin/upstream/xen
Switched to a new branch "upstream/xen"
$ git pull
$ git log | less

$ cd linux
$ make clean
$ git pull

make menuconfig

 $ cd /usr/src/linux
 $ sudo make
 $ sudo apt-get install kernel-package fakeroot
 $ export CONCURRENCY_LEVEL=<number_of_cores +1>
 $ sudo make-kpkg clean
 $ sudo fakeroot make-kpkg --initrd --append-to-version=-pv kernel-image kernel-headers
 $ sudo dpkg -i ../<linux-image-3.0.XXX.deb>

cd linux
make clean
cp -a .config .config-old
make oldconfig
make menuconfig (if you need to change something)
make bzImage
make modules
make modules_install
# in the following lines replace "version" with the actual kernel version you're compiling.
make install
# And then generate initrd/initramfs image for your dom0 kernel, example for Fedora/RHEL/CentOS:
mkinitrd -f /boot/initrd-version.img version
# For Fedora Core the 'make install' does it automatically

 $ sudo vim /etc/modules
# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
lp
rtc
# Added these lines
xen-evtchn
xen-gntdev
xen-netback
xen-blkback
xenfs
blktap

 $ cd /usr/src
 $ hg clone http://xenbits.xensource.com/xen-unstable.hg 
 $ cd xen-unstable.hg
 $ sudo make xen
 $ sudo make tools
 $ sudo make install-xen
 $ sudo make install-tools

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

 $ sudo systemctl start xenstored.service

none /proc/xen xenfs defaults 0 0

title        Xen 4.0, dom0 Linux kernel 2.6.32.24
root         (hd0,0)
kernel       /boot/xen-4.0.gz dom0_mem=512M
module       /boot/vmlinuz-2.6.32.24 root=/dev/sda1 ro nomodeset
module       /boot/initrd.img-2.6.32.24

menuentry 'GNU/Linux, with Linux 2.6.38-8-generic' --class gnu-linux --class gnu --class os {
    recordfail
    set gfxpayload=$linux_gfx_mode
    insmod part_msdos
    insmod ext2
    set root='(/dev/sda,msdos2)'
    search --no-floppy --fs-uuid --set=root 016e7c8a-4bdd-4873-92dd-d71171a49d6d
    linux    /boot/vmlinuz-2.6.38-8-generic root=UUID=016e7c8a-4bdd-4873-92dd-d71171a49d6d ro   quiet splash vt.handoff=7
    initrd    /boot/initrd.img-2.6.38-8-generic
}

#! /sbin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
menuentry 'GNU/Linux, with Linux 2.6.32.40-pv' --class gnu-linux --class gnu --class os {
        recordfail
        insmod part_msdos
        insmod ext2
        search --no-floppy --fs-uuid --set=root 016e7c8a-4bdd-4873-92dd-d71171a49d6d
        set root='(/dev/sda,msdos2)'
        search --no-floppy --fs-uuid --set=root 016e7c8a-4bdd-4873-92dd-d71171a49d6d
        multiboot /boot/xen-4.2-unstable.gz
        module /boot/vmlinuz-2.6.32.40-pv placeholder root=UUID=016e7c8a-4bdd-4873-92dd-d71171a49d6d dom0_mem=1024 console=tty  quiet splash vt.handoff=7
        module /boot/initrd.img-2.6.32.40-pv
}

title        pv_ops dom0 (2.6.32.24) with serial console
root         (hd0,0)
kernel       /xen-4.0.gz dom0_mem=1024M loglvl=all guest_loglvl=all sync_console console_to_ring com1=19200,8n1 console=com1
module       /vmlinuz-2.6.32.24 ro root=/dev/vg00/lv01 console=hvc0 earlyprintk=xen nomodeset
module       /initrd-2.6.32.24.img

@@ Line 705: / Line 705: @@
 [[Category:PVOPS]]
 [[Category:Users]]
-[[Category:Developers]
+[[Category:Developers]]
 [[Category:Project]]
 [[Category:Overview]]

XenParavirtOps: Difference between revisions

Revision as of 14:27, 17 February 2012

What is paravirt_ops?

Current state in Linux kernel and in distributions

Are there other distributions that have a Xen dom0 kernels available?

Help! I am having troubles

I have graphics card (DRM/TTM/KMS/Xorg) related problems with the pv_ops dom0 kernel..

Dom0 console gets all weird and corrupted in the end of the boot process

Dom0 console doesn't show any output and remains blank

Maybe it is something obvious? How do I make the bootup more verbose?

OK, how do I add earlyprintk=xen and all that?

I got a funky serial console (IPMI/AMT, etc) - Is there more information available how to debug and troubleshoot using a serial console?

Nothing is helping! Help!!

Roadmap

Status updates:

Work in progress for 3.3

Work in the future

Changelog

I want to build the Xen/paravirt_ops components myself

Novice

Expert

Getting the current stable version

Getting the current development version

xen.git branches

Downloading the git tree

Configuring the kernel

Configure kernel for domU support

Configure kernel for dom0 support

Building the kernel

Update modules

Build Xen

Xen requirements for using pv_ops dom0 kernel

Which kernel image to boot as dom0 kernel from your custom built kernel source tree?

Update services

Other System Updates

GRUB1 and GRUB2 (Booting)

Booting DomU guests

Running

Troubleshooting, what to do if the custom built pv_ops dom0 kernel doesn't work/boot?

Historical contents

Timeline of pvops

Contributing

Devices

CPU hotplug

Device hotplug

Device unplug/module unload

Development of PVOOPS in Ingo's tree

Testing

Linux distribution support for pv_ops dom0 kernels

2.6.32 and earlier kernels

Config files for 2.6.32

Navigation menu

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