2.6.30 dom0 Xen patches

2.6.30 dom0 Xen patches

[Andrew Lyon]

I have rebased the xen-patches from opensuse
kernel-source-2.6.30-50.1.src.rpm so that they can be applied to
vanilla 2.6.30, the usual patches tarball and gentoo ebuild are
available at http://code.google.com/p/gentoo-xen-kernel/downloads/list
, if you are not using Gentoo simply apply the patches in numeric
order.

Some notes:

both dom0 and domU require CONFIG_SPARSE_IRQ=y and CONFIG_HOTPLUG=y
64 bit dom0/domU requires CONFIG_IA32_EMULATION=y

Andy

Re: 2.6.30 dom0 Xen patches

[Andrew Lyon]

On Wed, Jul 1, 2009 at 6:15 PM, Andrew Lyon<andrew.lyon@gmail.com> wrote:
> I have rebased the xen-patches from opensuse
> kernel-source-2.6.30-50.1.src.rpm so that they can be applied to
> vanilla 2.6.30, the usual patches tarball and gentoo ebuild are
> available at http://code.google.com/p/gentoo-xen-kernel/downloads/list
> , if you are not using Gentoo simply apply the patches in numeric
> order.
>
> Some notes:
>
> both dom0 and domU require CONFIG_SPARSE_IRQ=y and CONFIG_HOTPLUG=y
> 64 bit dom0/domU requires CONFIG_IA32_EMULATION=y
>
> Andy
>

While this kernel seems to work ok as dom0 or domU it seems to be
incompatible with James Harpers gplpv drivers, probably something has
been changed in the networking code and the drivers need to be
updated, I have contacted James about this and I hope we will be able
to work together to figure it out and fix the problem, but if you use
gplpv please hold off upgrading for now!

Andy

2.6.30.1-rc1 dom0 tarball

[Daniel Schroeder]

Andrew Lyon wrote:
> I have rebased the xen-patches from opensuse
> kernel-source-2.6.30-50.1.src.rpm so that they can be applied to
> vanilla 2.6.30, the usual patches tarball and gentoo ebuild are
> available at http://code.google.com/p/gentoo-xen-kernel/downloads/list
> , if you are not using Gentoo simply apply the patches in numeric
> order.
> 
> Some notes:
> 
> both dom0 and domU require CONFIG_SPARSE_IRQ=y and CONFIG_HOTPLUG=y
> 64 bit dom0/domU requires CONFIG_IA32_EMULATION=y
> 
> Andy

hello Andy,

many thanks for your work.
I have taken your patch set and applied it on top of vanilla
2.6.30.1-rc1 and applied this patch for gcc4.3 bug:

http://xenbits.xen.org/gitweb?p=xenclient/linux-2.6.27-pq.git;a=blob_plain;f=master/clobber-induction-variable.patch;hb=HEAD

for the lazy people out there, here is the distclean tarball:

http://x17.eu/linux-2.6.30.1-rc1-xen.aka.suse-xenified-2.6.30-50.1-rebased.patches.by.andrew.lyon.tar.gz
http://x17.eu/linux-2.6.30.1-rc1-xen.aka.suse-xenified-2.6.30-50.1-rebased.patches.by.andrew.lyon.tar.gz.md5


--
daniel

Re: 2.6.30 dom0 Xen patches

[Jan Beulich]

>>> Andrew Lyon <andrew.lyon@gmail.com> 01.07.09 19:15 >>>
>I have rebased the xen-patches from opensuse
>kernel-source-2.6.30-50.1.src.rpm so that they can be applied to
>vanilla 2.6.30, the usual patches tarball and gentoo ebuild are
>available at http://code.google.com/p/gentoo-xen-kernel/downloads/list 
>, if you are not using Gentoo simply apply the patches in numeric
>order.
>
>Some notes:
>
>both dom0 and domU require CONFIG_SPARSE_IRQ=y and CONFIG_HOTPLUG=y
>64 bit dom0/domU requires CONFIG_IA32_EMULATION=y

May I ask why you found the first and third ones to be necessary? Unless
it's because of the conditional in the loop right after the commen "Zap
stats across IRQ changes of use." in unbind_from_irq(), which I fixed a
few days ago, but didn't push out to our internal repo so far. (The fix
is to change the dependency from CONFIG_SPARSE_IRQ to
CONFIG_GENERIC_HARDIRQS in the 2.6.30 patch.)

The second one seems less meaningful, as I wouldn't think anyone would
build a general use (Xen) kernel with EMBEDDED=y, and HOTPLUG is not
user selectable without EMBEDDED.

May I also ask for you to let us know about fixes to the patches that you
find necessary which aren't just due to you applying them to plain 2.6.30?

Thanks, Jan

2.6.30.1-rc2 dom0 tarball

[Daniel Schroeder]

<where>
http://x17.eu/linux-2.6.30.1-rc2-xen.aka.suse-xenified-2.6.30-50.1-rebased.patches.by.andrew.lyon.tar.gz
http://x17.eu/linux-2.6.30.1-rc2-xen.aka.suse-xenified-2.6.30-50.1-rebased.patches.by.andrew.lyon.tar.gz.md5
</where>

<what>
Andrew Lyon wrote:
> I have rebased the xen-patches from opensuse
> kernel-source-2.6.30-50.1.src.rpm so that they can be applied to
> vanilla 2.6.30, the usual patches tarball and gentoo ebuild are
> available at http://code.google.com/p/gentoo-xen-kernel/downloads/list
> , if you are not using Gentoo simply apply the patches in numeric
> order.
> 
> Some notes:
> 
> both dom0 and domU require CONFIG_SPARSE_IRQ=y and CONFIG_HOTPLUG=y
> 64 bit dom0/domU requires CONFIG_IA32_EMULATION=y
> 
> Andy

plus

http://xenbits.xen.org/gitweb?p=xenclient/linux-2.6.27-pq.git;a=blob_plain;f=master/clobber-induction-variable.patch;hb=HEAD
</what>


--
daniel

updated dom0 tarballs

[Daniel Schroeder]

i have created a directory, so you can check this http://x17.eu/xen/ url
after a new vanilla stable release for updates...

<where>
http://x17.eu/xen/
http://x17.eu/xen/linux-2.6.29.6-xen.aka.suse-xenified-2.6.29-62.1-rebased.patches.by.andrew.lyon.tar.gz
http://x17.eu/xen/linux-2.6.29.6-xen.aka.suse-xenified-2.6.29-62.1-rebased.patches.by.andrew.lyon.tar.gz.md5
http://x17.eu/xen/linux-2.6.30.1-xen.aka.suse-xenified-2.6.30-50.1-rebased.patches.by.andrew.lyon.tar.gz
http://x17.eu/xen/linux-2.6.30.1-xen.aka.suse-xenified-2.6.30-50.1-rebased.patches.by.andrew.lyon.tar.gz.md5
</where>


<what>
Andrew Lyon wrote:
> I have rebased the xen-patches from opensuse
> kernel-source-2.6.30-50.1.src.rpm so that they can be applied to
> vanilla 2.6.30, the usual patches tarball and gentoo ebuild are
> available at http://code.google.com/p/gentoo-xen-kernel/downloads/list
> , if you are not using Gentoo simply apply the patches in numeric
> order.
> 
> Some notes:
> 
> both dom0 and domU require CONFIG_SPARSE_IRQ=y and CONFIG_HOTPLUG=y
> 64 bit dom0/domU requires CONFIG_IA32_EMULATION=y
> 
> Andy

plus

http://xenbits.xen.org/gitweb?p=xenclient/linux-2.6.27-pq.git;a=blob_plain;f=master/clobber-induction-variable.patch;hb=HEAD
</what>


--
daniel

Re: 2.6.30 dom0 Xen patches

[Pasi Kärkkäinen]

On Thu, Jul 02, 2009 at 07:53:09AM +0100, Jan Beulich wrote:
> >>> Andrew Lyon <andrew.lyon@gmail.com> 01.07.09 19:15 >>>
> >I have rebased the xen-patches from opensuse
> >kernel-source-2.6.30-50.1.src.rpm so that they can be applied to
> >vanilla 2.6.30, the usual patches tarball and gentoo ebuild are
> >available at http://code.google.com/p/gentoo-xen-kernel/downloads/list 
> >, if you are not using Gentoo simply apply the patches in numeric
> >order.
> >
> >Some notes:
> >
> >both dom0 and domU require CONFIG_SPARSE_IRQ=y and CONFIG_HOTPLUG=y
> >64 bit dom0/domU requires CONFIG_IA32_EMULATION=y
> 
> May I ask why you found the first and third ones to be necessary? Unless
> it's because of the conditional in the loop right after the commen "Zap
> stats across IRQ changes of use." in unbind_from_irq(), which I fixed a
> few days ago, but didn't push out to our internal repo so far. (The fix
> is to change the dependency from CONFIG_SPARSE_IRQ to
> CONFIG_GENERIC_HARDIRQS in the 2.6.30 patch.)
> 
> The second one seems less meaningful, as I wouldn't think anyone would
> build a general use (Xen) kernel with EMBEDDED=y, and HOTPLUG is not
> user selectable without EMBEDDED.
> 
> May I also ask for you to let us know about fixes to the patches that you
> find necessary which aren't just due to you applying them to plain 2.6.30?
> 

Hello Jan,

I assume Novell did a lot of testing/patching/bugfixing for SLES11 2.6.27
Xen kernel. Do these OpenSUSE Xen patches contain the fixes from SLES11? 

-- Pasi

Re: 2.6.30 dom0 Xen patches

[Jan Beulich]

>>> Pasi Kärkkäinen<pasik@iki.fi> 06.07.09 13:02 >>>
>I assume Novell did a lot of testing/patching/bugfixing for SLES11 2.6.27
>Xen kernel. Do these OpenSUSE Xen patches contain the fixes from SLES11? 

Yes, OpenSuSE and SLE11 have been sharing the kernel approximately since
the release of the first kernel maintenance update for SLE11.

Jan

Re: 2.6.30 dom0 Xen patches

[Tim Post]

Hi,

On Mon, 2009-07-06 at 14:04 +0100, Jan Beulich wrote:
> >>> Pasi Kärkkäinen<pasik@iki.fi> 06.07.09 13:02 >>>
> >I assume Novell did a lot of testing/patching/bugfixing for SLES11 2.6.27
> >Xen kernel. Do these OpenSUSE Xen patches contain the fixes from SLES11? 
> 
> Yes, OpenSuSE and SLE11 have been sharing the kernel approximately since
> the release of the first kernel maintenance update for SLE11.
> 
> Jan

Is there a consensus now on where the 2.6.30-xen tree is going to live?
I saw a mention of space on xenbits, but did not see a consensus. Did I
miss one in the thread?

No rush or anything, I'm just catching up to the thread and feel as if I
missed a reply or two.

Cheers,
--Tim

Re: 2.6.30 dom0 Xen patches

[dbaxps]

Building Xen 3.4.1 Dom0 via xenified 2.6.30.1 kernel on top Ubuntu 9.04
Server
http://bderzhavets.wordpress.com/2009/07/07/building-xenified-2-6-30-1-kernel-via-xen-patches-2-6-30-2-tar-bz2/

-- 
View this message in context: http://www.nabble.com/2.6.30-dom0-Xen-patches-tp24293721p24439394.html
Sent from the Xen - Dev mailing list archive at Nabble.com.

Re: 2.6.30 dom0 Xen patches

[Kris Shannon]

2009/7/2 Andrew Lyon <andrew.lyon@gmail.com>:
> I have rebased the xen-patches from opensuse
> kernel-source-2.6.30-50.1.src.rpm so that they can be applied to
> vanilla 2.6.30, the usual patches tarball and gentoo ebuild are
> available at http://code.google.com/p/gentoo-xen-kernel/downloads/list
> , if you are not using Gentoo simply apply the patches in numeric
> order.
>
> Some notes:
>
> both dom0 and domU require CONFIG_SPARSE_IRQ=y and CONFIG_HOTPLUG=y
> 64 bit dom0/domU requires CONFIG_IA32_EMULATION=y
>
> Andy

The error:
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'

when CONFIG_SPARSE_IRQ is not set is due to a missing #ifdef change a couple
of lines earlier.  The commit d52a61c04c6c0814ca270a088feedb126436598e altered
the kernel_stat.irqs dependency to CONFIG_GENERIC_HARDIRQS.

Re: 2.6.30 dom0 Xen patches

[Andrew Lyon]

> As I don't expect to get the stuff I have pushed out before our tree gets
> switched to 2.6.31-rc, I'll attach the whole patch set as it is after fixing the
> !ia32-emulation problem you pointed out.

I have rebased the 2.6.30 Xen patches
(xen-patches-2.6.30-20090703.tb2) that Jan Beulich was kind enough to
send to me before openSUSE switch their tree to 2.6.31-git etc, the
new files are available at
http://code.google.com/p/gentoo-xen-kernel/downloads/list

xen-sources-2.6.30-r2.ebuild
xen-patches-2.6.30-3.tar.bz2

Non-Gentoo users can simply apply the patches to 2.6.30.1 in numeric order.

As usual I did not include patches that are for backwards
compatibility, suse specific features, experimental features (eg
tmem), or that require patches to Xen itself.

Note that James Harper's gplpv driver for networking (xennet.sys) does
not work with 2.6.30, he has given me a patch which works around the
problem but you will need to recompile the drivers yourself, the patch
is:

diff -r 36221c314d54 xennet/xennet_common.c
--- a/xennet/xennet_common.c    Wed Jul 15 20:05:36 2009 +1000
+++ b/xennet/xennet_common.c    Fri Jul 17 23:53:12 2009 +1000
@@ -181,6 +181,12 @@
      return PARSE_TOO_SMALL;
          }
            }
            +
            +  if ((ULONG)XN_HDR_SIZE + pi->ip4_length > pi->total_length)
            +  {
            +    KdPrint((__DRIVER_NAME "     XN_HDR_SIZE + ip4_length
(%d) > total_length (%d)\n", XN_HDR_SIZE + pi->ip4_length,
pi->total_length));
            +    return PARSE_UNKNOWN_TYPE;
            +  }

              pi->tcp_length = pi->ip4_length - pi->ip4_header_length
- pi->tcp_header_length;
                pi->tcp_remaining = pi->tcp_length;


Andy