What is the official source for the pvops kernel?

What is the official source for the pvops kernel?

[Anthony Wright]

I want to download the latest (2.6.38) pvops kernel, and I'm trying to work out where I should get it from. There seems to be a number of potential sources at kernel.org referenced from the Wiki, but depending upon the kernel version you should go into jeremy's or konrad's personal git tree.

I'm a little uncertain which one I should use, particularly since the only reference I can find to the source is a wiki which anybody can edit.
 Also konrad's version which is referenced from the wiki is for 2.6.38-rc7, but 2.6.38 has now been released.

Is there an official repository for the pvops kernel or is the official way to get it to download from an individuals personal git repository?

thanks,

Anthony

Re: What is the official source for the pvops kernel?

[Konrad Rzeszutek Wilk]

On Mon, Mar 21, 2011 at 11:39:44AM +0000, Anthony Wright wrote:
> I want to download the latest (2.6.38) pvops kernel, and I'm trying to work out where I should get it from. There seems to be a number of potential sources at kernel.org referenced from the Wiki, but depending upon the kernel version you should go into jeremy's or konrad's personal git tree.

Hehe.
> 
> I'm a little uncertain which one I should use, particularly since the only reference I can find to the source is a wiki which anybody can edit.
>  Also konrad's version which is referenced from the wiki is for 2.6.38-rc7, but 2.6.38 has now been released.

Hmm.. It might be a week before I can update tree.

You can start using devel/next-2.6.39

> 
> Is there an official repository for the pvops kernel or is the official way to get it to download from an individuals personal git repository?

First of, 2.6.38 is unstable. We haven't completed all the up-porting effort and there are bounds
to be bugs. So when you run it, please do report the bugs you are seeing.

For right now there are two git trees. The official vaniall 2.6.38 which can:
 - Boot Dom0
 - Boot DomU
 - Can boot PV and HVM guests with the latest xen-unstable.hg tree and the
   latest QEMU (which has built-in backend drivers).


The 2.6.38 in my tree(git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git) has
the things mentioned before, and then:
 - Can be used with Xen 4.0 as it has now three backends: pciback, netback, blkback.
 - Can be be booted with Xorg (radeon and nouveau) if the card is PCIe.
 - Has gntalloc allowing domain-to-domain pages to be shared.
 - Lots of bug-fixes. 
 - And infrastructure add-ons (backend, P2M, M2P).

In short, it has all of the patches that just went in 2.6.39-rc0 and then some
more. For the details look on LKML for '[GIT PULL]' from me.

So if you want the "stable" one use the 2.6.32.32 that Jeremy just released.

If you are more adventurous, try out the devel/next-2.6.39

Re: What is the official source for the pvops kernel?

[Anthony Wright]

On 21/03/2011 12:06, Konrad Rzeszutek Wilk wrote:
> First of, 2.6.38 is unstable. We haven't completed all the up-porting effort and there are bounds
> to be bugs. So when you run it, please do report the bugs you are seeing.
>
> For right now there are two git trees. The official vaniall 2.6.38 which can:
>   - Boot Dom0
>   - Boot DomU
>   - Can boot PV and HVM guests with the latest xen-unstable.hg tree and the
>     latest QEMU (which has built-in backend drivers).
Are you saying I can use the standard 2.6.38 build as a Xen Dom0 kernel? 
If not, could you explain this a little more.
>
> The 2.6.38 in my tree(git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git) has
> the things mentioned before, and then:
>   - Can be used with Xen 4.0 as it has now three backends: pciback, netback, blkback.
>   - Can be be booted with Xorg (radeon and nouveau) if the card is PCIe.
>   - Has gntalloc allowing domain-to-domain pages to be shared.
>   - Lots of bug-fixes.
>   - And infrastructure add-ons (backend, P2M, M2P).
>
> In short, it has all of the patches that just went in 2.6.39-rc0 and then some
> more. For the details look on LKML for '[GIT PULL]' from me.
>
> So if you want the "stable" one use the 2.6.32.32 that Jeremy just released.
I really wanted stable and tried the latest 2.6.32.XX from two weeks ago 
but on every machine I've tried it, I got a kernel panic in xen_set_pte. 
I wasn't sure what the root cause was (I upgraded from 3.X to 4.X Xen at 
the same time) so I tried 2.6.38-rc7 to see if it was Xen or the kernel 
and no longer got the panic, so continued with that kernel version.

I was under the impression that 2.6.38 would be a stable version, but 
not it appears not. Is there a version later than 2.6.32 that I could 
use a stable?

thanks,

Anthony.

Re: What is the official source for the pvops kernel?

[Stefano Stabellini]

On Mon, 21 Mar 2011, Anthony Wright wrote:
> On 21/03/2011 12:06, Konrad Rzeszutek Wilk wrote:
> > First of, 2.6.38 is unstable. We haven't completed all the up-porting effort and there are bounds
> > to be bugs. So when you run it, please do report the bugs you are seeing.
> >
> > For right now there are two git trees. The official vaniall 2.6.38 which can:
> >   - Boot Dom0
> >   - Boot DomU
> >   - Can boot PV and HVM guests with the latest xen-unstable.hg tree and the
> >     latest QEMU (which has built-in backend drivers).
> Are you saying I can use the standard 2.6.38 build as a Xen Dom0 kernel? 
> If not, could you explain this a little more.

Yes, but as you can see from the list above, it is missing some
features...


> > The 2.6.38 in my tree(git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git) has
> > the things mentioned before, and then:
> >   - Can be used with Xen 4.0 as it has now three backends: pciback, netback, blkback.
> >   - Can be be booted with Xorg (radeon and nouveau) if the card is PCIe.
> >   - Has gntalloc allowing domain-to-domain pages to be shared.
> >   - Lots of bug-fixes.
> >   - And infrastructure add-ons (backend, P2M, M2P).
> >
> > In short, it has all of the patches that just went in 2.6.39-rc0 and then some
> > more. For the details look on LKML for '[GIT PULL]' from me.
> >
> > So if you want the "stable" one use the 2.6.32.32 that Jeremy just released.
> I really wanted stable and tried the latest 2.6.32.XX from two weeks ago 
> but on every machine I've tried it, I got a kernel panic in xen_set_pte. 
> I wasn't sure what the root cause was (I upgraded from 3.X to 4.X Xen at 
> the same time) so I tried 2.6.38-rc7 to see if it was Xen or the kernel 
> and no longer got the panic, so continued with that kernel version.
> 
> I was under the impression that 2.6.38 would be a stable version, but 
> not it appears not. Is there a version later than 2.6.32 that I could 
> use a stable?
> 

It is stable as PV or PV on HVM guest kernel, it is not stable yet as
dom0 kernel.
If you want a dom0 kernel newer than 2.6.32 you can try Konrad's
next-2.6.39-rc0, obviously not stable but your best bet.