RE: [Xen-users] howto build xen from source with existing config?

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: Philippe Trolliet [mailto:p.trolliet@xxxxxxxxxxxxxxx] 
> Sent: 25 May 2007 11:25
> To: Petersson, Mats; Xen-Users
> Subject: RE: [Xen-users] howto build xen from source with 
> existing config?
> 
> > -----Original Message-----
> > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> > [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx]On Behalf Of 
> Petersson,
> > Mats
> > Sent: Freitag, 25. Mai 2007 12:06
> > To: Philippe Trolliet; Xen-Users
> > Subject: RE: [Xen-users] howto build xen from source with existing
> > config?
> >
> >
> >
> >
> > > -----Original Message-----
> > > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> > > [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
> > > Philippe Trolliet
> > > Sent: 25 May 2007 09:09
> > > To: Xen-Users
> > > Subject: [Xen-users] howto build xen from source with 
> existing config?
> > >
> > > hi,
> > > i´m using fedora core 6 and want to build xen 3.1 from source
> > > for the 2.6.20
> > > kernel. how can i build xen with the existing kernel-config
> > > from /boot (e.g.
> > > config-2.6.20-1.2948.fc6xen) and an installed kernel-devel
> > > (source) package?
> > > is it good to use this config or should i create a new one?
> >
> > You should be able to use the config for another kernel, as long
> > as the config is for the same base-level kernel (e.g. it may not
> > work to use a 2.6.18 config to build a 2.6.20 kernel, and
> > probably even worse the other way around).
> 
> ok. i want to use 2.6.20 config for a 2.6.20 kernel.
> i would never use a 2.6.18 config for a 2.6.20 kernel or vice versa.
> but how and where can i tell the compile process to use the config?
> i searched the diferent makefiles...

As Ian Tobin said, you can use "make oldconfig" to copy the current config to 
the new build. 

> 
> >
> >
> > > i searched the net and haven´t found any howto to build xen
> > > from source with
> > > newer kernel versions and existing config files.
> >
> > As stated in a post yesterday, the best way to achieve this is to
> > wait for one of the distributors to do the hard work of figuring
> > out how to adopt the kernel patches from Xen into the next
> > version of the kernel - because that's what you'll have to do.
> >
> > However, if you want to go with the current FC6 Dom0 kernel, and
> > use the new 3.1 tools and Xen Hypervisor, that should work ok.
> 
> i want to change from the fedora core 6 xen 3.0.3 version to 
> 3.1 because the
> hypervisor crashed. first the domU crashed when i tried to 
> compile postfix
> in it. but not just when i was compiling. then the dom0 
> crashed and i had to
> turn off the machine to restart it. i got the message: "BUG: 
> soft lockup
> detected on cpu#0" with a stack trace. i posted the error on 
> bugzilla. i´m
> not the only one with that problem.
> 
> do you mean that it´s better to use the standard way for xen? 
> (download xen
> source and just execute make world. then use the 2.6.18 
> kernel builded by
> xen 3.1.)

That would be my preferred method, unless you absolutely need something from 
2.6.20 - such as a particular driver that doesn't exist in 2.6.18 or such. 

--
Mats
> 
> i´ll just try that and let´s hope that it works... in case 
> that it wouldn´t,
> i have to change back to FC4.
> 
> regards
> philippe
> 
> >
> > --
> > Mats
> > > in the users documentation i found sth like make ARCH=xen
> > > oldconfig but this
> > > doesn´t work. the README couldn´t help me too.
> > > please give detailed instructions.
> > > thank you
> > >
> > > regards
> > > philippe
> > >
> > >
> > > _______________________________________________
> > > Xen-users mailing list
> > > Xen-users@xxxxxxxxxxxxxxxxxxx
> > > http://lists.xensource.com/xen-users
> > >
> > >
> > >
> >
> >
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
> >
> >
> 
> 
> 
> 



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