Xen 2.6.25 dom0 kernel ebuild

Message

Floppe · Post by **Floppe** » Wed May 13, 2009 7:55 am

Hi,

I've downloaded and compiled 2.6.27-xen-r5 and it is working fine. However, I have no /dev/hvc0 and no xen console option in kernel config so I have no clue on how inittab should be to get a login prompt when running xm console domain from dom0? Everything else works, I see the boot messages and so on.

Thanks for your great work on this one. So good to have a newer kernel than 2.6.18 for guest.
// Floppe

_Razorblade_ · Post by **_Razorblade_** » Wed May 13, 2009 7:58 am

hvc0 is only used for pv-guest support in vanilla kernels, xvc0 is what you want in your domUs on a full xen-kernel.

Floppe · Post by **Floppe** » Wed May 13, 2009 8:04 am

Oh, that was easy

Thank you!

andylyon · Post by **andylyon** » Sun May 17, 2009 1:34 pm

I have uploaded 2.6.29-r3 ebuild which uses v5 of my xen-patches and also v5 genpatches which includes incremental patches to 2.6.29.2.

Andy

xpetex · Post by **xpetex** » Wed May 20, 2009 3:18 pm

thx

andylyon · Post by **andylyon** » Wed May 20, 2009 3:34 pm

xpetex wrote:thx

Just uploaded -r4 as well!

Andy

_Razorblade_ · Post by **_Razorblade_** » Wed May 20, 2009 6:22 pm

Is anyone using this kernel as dom0 and has working X?

Trying to get this going for some time now, I guess part of the problem is related to Ati not supporting 2.6.29 at all, but even with radeonhd I get a crash (blank screen no log at all) when starting up X while 2.6.29-gentoo is working fine...

andylyon · Post by **andylyon** » Thu May 21, 2009 7:23 am

_Razorblade_ wrote:Is anyone using this kernel as dom0 and has working X?

Trying to get this going for some time now, I guess part of the problem is related to Ati not supporting 2.6.29 at all, but even with radeonhd I get a crash (blank screen no log at all) when starting up X while 2.6.29-gentoo is working fine...

I've been using nvidia binary drivers with GeForce 8600GT and Xen patched kernels for some time, when I started using Xen and posted the 2.6.25 patches I was having some problems which in the end turned out to be a faulty card, but I did briefly try a radeon card and although it worked I couldn't get dual head output working and I seem to recall it wasn't very stable either.

Nvidia linux support seems to be better than ATI...

Andy

Elvensight · Post by **Elvensight** » Thu May 28, 2009 5:04 pm

Thanks for a great work andylyon !

I was getting problems with bringing up domU(at least I thought that way), searched around for similar symptoms and found that I want to add this line below to the guest's config file

Code: Select all

extra = 'xencons=tty'

Gentoo's portage repo is sleeping (..again)
and this guide (http://www.gentoo.org/doc/en/xen-guide.xml) is, umm let's say - weird and incomplete..

thx again Andy

xpetex · Post by **xpetex** » Thu Jun 18, 2009 11:41 am

on my 64bit dom0 system i see the following:

Timer ISR/7: Time went backwards: delta=-49806510 delta_cpu=1310193490 shadow=2090891309269 off=548362074 processed=2091489476608 cpu_processed=2090129476608
0: 2091479476608
1: 2091489476608
2: 2091479476608
3: 2091479476608
4: 2091479476608
5: 2091469476608
6: 2091479476608
7: 2090129476608
Timer ISR/6: Time went backwards: delta=-38669109 delta_cpu=1201330891 shadow=2472903631853 off=457176675 processed=2473399476608 cpu_processed=2472159476608
0: 2473379476608
1: 2473389476608
2: 2473389476608
3: 2473389476608
4: 2473389476608
5: 2473389476608
6: 2472159476608
7: 2473389476608

SMP 32 bit domU with two vcpus....domU freezes...
any suggestions?

Spaulding · Post by **Spaulding** » Sat Jun 20, 2009 1:09 pm

Hi! I have a question, can anyone have a patch xen + grsec for domU?

andylyon · Post by **andylyon** » Wed Jul 01, 2009 4:27 pm

I have uploaded ebuild + patches to http://code.google.com/p/gentoo-xen-ker ... loads/list for 2.6.30.

Andy

amissus · Post by **amissus** » Thu Jul 02, 2009 6:29 am

Hello I'm getting following error, have anyone meet this difficulty?

emerge xen-sources
Calculating dependencies... done!

>>> Verifying ebuild manifests

>>> Emerging (1 of 1) sys-kernel/xen-sources-2.6.30-r1
* xen-patches-2.6.30-2.tar.bz2 RMD160 SHA1 SHA256 size

... [ ok ]
* linux-2.6.30.tar.bz2 RMD160 SHA1 SHA256 size

... [ ok ]
* genpatches-2.6.30-2.base.tar.bz2 RMD160 SHA1 SHA256 size

... [ ok ]
* checking ebuild checksums

... [ ok ]
* checking auxfile checksums

... [ ok ]
* checking miscfile checksums

... [ ok ]
>>> Preparing to unpack ...
>>> Unpacking source...
>>> Unpacking linux-2.6.30.tar.bz2 to /var/tmp/portage/sys-kernel/xen-sources-2.6.30-r1/work
>>> Unpacking genpatches-2.6.30-2.base.tar.bz2 to /var/tmp/portage/sys-kernel/xen-sources-2.6.30-r1/work/patches/000001
>>> Unpacking xen-patches-2.6.30-2.tar.bz2 to /var/tmp/portage/sys-kernel/xen-sources-2.6.30-r1/work/patches/000002

bzip2: Compressed file ends unexpectedly;
perhaps it is corrupted? *Possible* reason follows.
bzip2: Success
Input file = /var/tmp/portage/sys-kernel/xen-sources-2.6.30-r1/distdir/xen-patches-2.6.30-2.tar.bz2, output file = (stdout)

It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.

You can use the `bzip2recover' program to attempt to recover
data from undamaged sections of corrupted files.

tar: This does not look like a tar archive
tar: Error exit delayed from previous errors
*
* ERROR: sys-kernel/xen-sources-2.6.30-r1 failed.
* Call stack:
* ebuild.sh, line 49: Called src_unpack
* environment, line 3118: Called kernel-2_src_unpack
* environment, line 2323: Called unipatch ' /usr/portage/distfiles/genpatches-2.6.30-2.base.tar.bz2 /usr/portage/distfiles/xen-patches-2.6.30-2.tar.bz2'
* environment, line 3485: Called unpack 'xen-patches-2.6.30-2.tar.bz2'
* ebuild.sh, line 386: Called _unpack_tar 'bzip2'
* ebuild.sh, line 361: Called die
* The specific snippet of code:
* assert "$myfail"
* The die message:
* failure unpacking xen-patches-2.6.30-2.tar.bz2
*
* If you need support, post the topmost build error, and the call stack if relevant.
* A complete build log is located at '/var/tmp/portage/sys-kernel/xen-sources-2.6.30-r1/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/sys-kernel/xen-sources-2.6.30-r1/temp/environment'.
*

>>> Failed to emerge sys-kernel/xen-sources-2.6.30-r1, Log file:

>>> '/var/tmp/portage/sys-kernel/xen-sources-2.6.30-r1/temp/build.log'

* Messages for package sys-kernel/xen-sources-2.6.30-r1:

*
* ERROR: sys-kernel/xen-sources-2.6.30-r1 failed.
* Call stack:
* ebuild.sh, line 49: Called src_unpack
* environment, line 3118: Called kernel-2_src_unpack
* environment, line 2323: Called unipatch ' /usr/portage/distfiles/genpatches-2.6.30-2.base.tar.bz2 /usr/portage/distfiles/xen-patches-2.6.30-2.tar.bz2'
* environment, line 3485: Called unpack 'xen-patches-2.6.30-2.tar.bz2'
* ebuild.sh, line 386: Called _unpack_tar 'bzip2'
* ebuild.sh, line 361: Called die
* The specific snippet of code:
* assert "$myfail"
* The die message:
* failure unpacking xen-patches-2.6.30-2.tar.bz2
*
* If you need support, post the topmost build error, and the call stack if relevant.
* A complete build log is located at '/var/tmp/portage/sys-kernel/xen-sources-2.6.30-r1/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/sys-kernel/xen-sources-2.6.30-r1/temp/environment'.
*

Floppe · Post by **Floppe** » Thu Jul 02, 2009 6:34 am

Seems like your copy of xen-patches-2.6.30-2.tar.bz2 is corrupt. Try to download it again.

amissus · Post by **amissus** » Thu Jul 02, 2009 6:59 am

Yes, it was my first idea, tried few times and same results.

Floppe · Post by **Floppe** » Thu Jul 02, 2009 7:02 am

Wierd. I downloaded the files after your post and tested, works for me.

amissus · Post by **amissus** » Thu Jul 02, 2009 7:06 am

Could you shortly describe procedure you have used for obtaining functional xen-sources 2.6.30 ?

Floppe · Post by **Floppe** » Thu Jul 02, 2009 7:11 am

Code: Select all

cd /usr/portage/distfiles
wget http://gentoo-xen-kernel.googlecode.com/files/xen-patches-2.6.30-2.tar.bz2
cd /usr/local/portage/sys-kernel/xen-sources
wget http://gentoo-xen-kernel.googlecode.com/files/xen-sources-2.6.30-r1.ebuild
ebuild xen-sources-2.6.30-r1.ebuild digest
cd
emerge -auvD world

/usr/local/portage is my portage overlay

amissus · Post by **amissus** » Thu Jul 02, 2009 7:16 am

I used little different procedure. Tonight i try yours. Thank you.

edit:
Thanks Floppe, it is OK now. Salute to Finland.

microcosm · Post by **microcosm** » Mon Jul 06, 2009 10:32 am

My kernel build halts on the following error:

CC drivers/xen/core/evtchn.o
drivers/xen/core/evtchn.c: In function 'unbind_from_irq':
drivers/xen/core/evtchn.c:641: error: 'struct kernel_stat' has no member named 'irqs'
make[3]: *** [drivers/xen/core/evtchn.o] Error 1
make[2]: *** [drivers/xen/core] Error 2
make[1]: *** [drivers/xen] Error 2
make: *** [drivers] Error 2

I use the latest ebuild, xen-sources-2.6.30-r1, and the system is x86_64.

2bbionic · Post by **2bbionic** » Mon Jul 06, 2009 4:24 pm

Hello again andylyon,

today, i tried the new ebuild on C2D E8400 with 4 GB and a i7 920. Unfortunately, on both systems the same error occurs microcosm mentioned.
Both are running with xen-tools-3.4.0-r1.
I will try my own and play a little with the switches in menuconfig...

Greetings,

2bbionic

EDIT: It seems to be working with "Support sparse irq numbering " on in "Processor type and features"

That was easy...it seems

microcosm · Post by **microcosm** » Mon Jul 06, 2009 5:36 pm

That option is unfortunately removed when I check Enable Xen compatible kernel.

I have googled around to get any hint on this error, found related stuff, but nothing spot on. I have toyed around with some options too, with some I get different errors earlier, so so far it's been a deadend.

2bbionic · Post by **2bbionic** » Mon Jul 06, 2009 6:03 pm

It seems that there are some differences between. My both systems have this switch- with XEN-enabled on, too.

microcosm · Post by **microcosm** » Mon Jul 06, 2009 9:51 pm

It seems the .config was wasted (bad idea to use genkernel), after a fresh start with Mr Proper it compiles!

Just as you wrote 2bbionic, the sparse option is there now.

_markd · Post by **_markd** » Tue Jul 07, 2009 8:06 pm

I tried to compile the 2.6.30 sources on a 32bit machine for a domU kernel. What I got was this:

Code: Select all

  LD      net/netfilter/netfilter.o
  LD [M]  net/netfilter/nf_conntrack.o
  LD      net/netfilter/built-in.o
  LD      net/built-in.o
  LD      vmlinux.o
  MODPOST vmlinux.o
WARNING: vmlinux.o(.exit.text+0x336): Section mismatch in reference from the function evtchn_cleanup() to the variable .cpuinit.data:evtchn_cpu_nfb
The function __exit evtchn_cleanup() references
a variable __cpuinitdata evtchn_cpu_nfb.
This is often seen when error handling in the exit function
uses functionality in the init path.
The fix is often to remove the __cpuinitdata annotation of
evtchn_cpu_nfb so it may be used outside an init section.

WARNING: vmlinux.o (__xen_guest): unexpected non-allocatable section.
Did you forget to use "ax"/"aw" in a .S file?
Note that for example <linux/init.h> contains
section definitions for use in .S files.

  GEN     .version
  CHK     include/linux/compile.h
  UPD     include/linux/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
ld: kernel image bigger than KERNEL_IMAGE_SIZE
ld: kernel image bigger than KERNEL_IMAGE_SIZE
ld: kernel image bigger than KERNEL_IMAGE_SIZE
make: *** [.tmp_vmlinux1] Error 1

Any hints?

Xen 2.6.25 dom0 kernel ebuild

new ebuild

thx and a tip

Timer ISR/7: Time went backwards

2.6.30 Xen dom0 ebuild

Error during make

Success!

x86 2.6.30 domU compile failed