Hello

Any inputs on backporting changes to xcp 2.6.27 source?

In addition, I had another question. I believe pci-passthrough works for
pci-e slots as well. I have not tested it just wanted to check if any
additional config changes are needed to make it work?

Thanks

On Fri, Apr 9, 2010 at 8:53 AM, Ritu kaur <ritu.kaur.us@gmail.com> wrote:

> Our technical guru/consultant suggested to check if backporting
> fixes(changes for shared interrupts) into 2.6.27 XCP source is feasible? i.e
>
>
> XCP 2.6.27 source + fix(es) for shared interrupts = pci-passthrough work
> seamlessly
>
> If it is possible do let me know and pointer to the changes would be
> helpful as well.
>
> Thanks
>
>
> On Tue, Apr 6, 2010 at 6:31 AM, Ritu kaur <ritu.kaur.us@gmail.com> wrote:
>
>> Thanks Pasi. When will new xcp with 2.6.32 kernel be released?
>>
>> Replies inline...
>>
>> On Mon, Apr 5, 2010 at 11:03 PM, Pasi Kärkkäinen <pasik@iki.fi> wrote:
>>
>>> On Mon, Apr 05, 2010 at 09:00:59PM -0700, Ritu kaur wrote:
>>> >    Thanks Konrad.
>>> >
>>> >    I downloaded new code and still doesn't work(albeit different
>>> problem). I
>>> >    will enumerate them below
>>> >
>>> >    (Please note 1, 2 and 3 are seen with old xen/next as well). What
>>> seemed
>>> >    simple testing of pci passthrough via config changes doesn't seem to
>>> be
>>> >    the case.
>>> >
>>> >    1. mkinitrd doesn't work in xcp ddk. I get below errors
>>> >
>>> >    mkinitrd -f ./initrd-2.6.32.ing 2.6.32
>>> >    modinfo: could not find module ide-disk
>>> >    No module ide-disk found for kernel 2.6.32, aborting.
>>> >
>>>
>>> Did you install the modules after you compiled the kernel?
>>> Did you run "depmod -a <kernelversion>" ?
>>>
>>>
>> yes I have done it and still the same problem.
>>
>>
>>>  >    I copied ide-disk.ko from
>>> >
>>>  /lib/modules/2.6.27.42-0.1.1.xs0.1.1.737.1065xen/kernel/drivers/ide/ide-disk.ko(just
>>> >    to check what other errors arise from mkinitrd in xcp ddk), I get
>>> >
>>>
>>> You can't modules from a different kernel version!!!
>>>
>>>
>> I understand that. Just want to check what additional problems arise.
>>
>>
>>>  >    mkinitrd -f ./initrd-2.6.32.ing 2.6.32
>>> >    modinfo: could not find module ide-disk
>>> >    modinfo: could not find module dm-mem-cache
>>> >    modinfo: could not find module dm-message
>>> >    modinfo: could not find module dm-raid45
>>> >
>>>
>>> Looks like you didn't install the modules from the new kernel.
>>>
>>
>> I have installed modules via "make modules_install" and depmod as well.
>>
>>
>>>
>>> >    2. Looked into .config I have(generated via make menuconfig) and
>>> there
>>> >    isn't anything on IDEDISK. I cross checked config file that comes
>>> with xcp
>>> >    source code it has
>>> >    ...
>>> >    CONFIG_BLK_DEV_IDEDISK=m
>>> >    CONFIG_IDEDISK_MULTI_MODE=y
>>> >    ...
>>> >
>>>
>>> XCP default kernel is 2.6.27. You're trying to use 2.6.32.
>>> There might have been changes between the kernel versions.
>>>
>>> >    I copied above configs into my .config and when I run make(it asks
>>> some
>>> >    IDE config related questions ) and these configs are deleted after
>>> that. I
>>> >    have tried all options "y/n/m" to the questions and same result.
>>> >
>>> >    3. I downloaded .config file from
>>> >    [1]
>>> http://pasik.reaktio.net/xen/pv_ops-dom0-debug/config-2.6.32.10-pvops-dom0-xen-stable-x86_32
>>> >
>>> >    there isn't IDEDISK config in it either and in addition "make
>>> tar-pkg"
>>> >    doesn't work with this .config file. I get following errors
>>> >
>>>
>>> If ide-disk module is not used/required anymore in 2.6.32, then you
>>> should
>>> remove it from /etc/modprobe.conf so that mkinitrd doesn't try to include
>>> it!
>>>
>>> (replace it with the proper new module name).
>>>
>>> >    DEPMOD  2.6.32
>>> >
>>> >    /bin/sh: line 1:  3341 Killed                  /sbin/depmod -ae -F
>>> >    System.map -b /root/kernel/linux-2.6.32/tar-install 2.6.32
>>> >    make[3]: *** [_modinst_post] Error 137
>>> >    make[2]: *** [sub-make] Error 2
>>> >    make[1]: *** [tar-pkg] Error 2
>>> >    make: *** [tar-pkg] Error 2
>>> >
>>> >    4. I tried with the vmlinuz and initrd image built from "2" above(I
>>> know
>>> >    initrd image is not correct, I just wanted to try) and I get
>>> >
>>> >    [0.000000] ERROR: Unable to locate IOAPIC for GSI 2
>>> >    [0.000000] ERROR: Unable to locate IOAPIC for GSI 9
>>> >    [0.000000] ERROR: Unable to locate IOAPIC for GSI 2
>>> >    [0.000000] ERROR: Unable to locate IOAPIC for GSI 9
>>> >    [0.493572] registering netback
>>> >    Red Hat nash version 5.1.19.6 starting
>>> >    einsmod: error inserting 'lib/ide-disk.ko': -1 Invalid module format
>>> >
>>>
>>> "Invalid module format" means it's from a different kernel and cannot be
>>> used with this kernel.
>>>
>>> >    indmos: error inserting '/lib/dm-region-hash.ko': -1 File Exists
>>> >    mount: could not fine filesystem '/dev/root'
>>> >    setuproot: moving /dev failed: No such file or directory
>>> >    setuproot: error mounting /proc: No such file or directory
>>> >    setuproot: error mounting /sys: No such file or directory
>>> >    switchroot: mount failed: No such file or directory
>>> >    [0.905987] Kernel panic - not syncing: Attempted to kill init!
>>> >
>>> >    Let me know how to proceed on this.
>>> >
>>>
>>> Install for example Fedora 12, or any other distro that has 2.6.32 kernel
>>> as a default, and check which modules are used for your hardware,
>>> then replace "ide-disk" in modprobe.conf with the actual module.
>>>
>>
>> Will look into it.
>>
>> Thanks
>>
>>>
>>> -- Pasi
>>>
>>>
>>> >    Thanks
>>> >
>>> >    On Mon, Apr 5, 2010 at 10:00 AM, Konrad Rzeszutek Wilk
>>> >    <[2]konrad.wilk@oracle.com> wrote:
>>> >
>>> >      On Mon, Apr 05, 2010 at 07:10:22AM -0700, Ritu kaur wrote:
>>> >      > Hello,
>>> >      >
>>> >      > Any inputs folks on xen debugs provided? dom0 crashes when
>>>  xen/next
>>> >      kernel
>>> >
>>> >      What you are hitting should have been fixed a week ago. Are you up
>>> to
>>> >      the latest in xen/next? Did you do 'git pull' ? Do you see this as
>>> the
>>> >      latest when you do 'git log | head':
>>> >
>>> >       git log | head -5
>>> >      commit 900f6d725874ca97c21cdc5a2c4e05bd62db4e86
>>> >      Merge: f2530fa 89689b1
>>> >      Author: Jeremy Fitzhardinge <[3]jeremy.fitzhardinge@citrix.com>
>>> >      Date:   Thu Apr 1 14:24:30 2010 -0700
>>> >
>>> > References
>>> >
>>> >    Visible links
>>> >    1.
>>> http://pasik.reaktio.net/xen/pv_ops-dom0-debug/config-2.6.32.10-pvops-dom0-xen-stable-x86_32
>>> >    2. mailto:konrad.wilk@oracle.com
>>> >    3. mailto:jeremy.fitzhardinge@citrix.com
>>>
>>> > _______________________________________________
>>> > Xen-devel mailing list
>>> > Xen-devel@lists.xensource.com
>>> > http://lists.xensource.com/xen-devel
>>>
>>>
>>
>