Building Modules Against Xen Sources

Building Modules Against Xen Sources

[Jayson Vantuyl]

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I'm currently trying to build modules against the kernels created  
with Xen 3.0.5rc4.

This used to not be such a problem, as Xen created a kernel directory  
and the built in it.  Plain Jane, nothing fancy.

I've noticed that somewhere since I did this (which was as recent as  
3.0.4-1) the kernel build now does things a bit different.   
Apparently there is some sort of build-.... directory where things  
happen now.

This is a problem.  I build a number of things against these kernels,  
not the least of which include Coraid's AoE drivers and Redhat's CMAN  
and DLM stuff.

I was able to get kernel source directories by adjusting buildconfigs/ 
mk.linux-2.6-xen.  I changed the line that read:

LINUXSRC_DIR=....

to:

LINU

This still requires me to build my kernels a second time to get a  
good build directory.  Is there a better way to do this?  Can we make  
this easier?

-- 
Jayson Vantuyl
Systems Architect
Engine Yard
jvantuyl@engineyard.com



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Re: Building Modules Against Xen Sources

[Keir Fraser]

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On 29/4/07 09:54, "Jayson Vantuyl" <jvantuyl@engineyard.com> wrote:

> I'm currently trying to build modules against the kernels created with Xen
> 3.0.5rc4.
> 
> This used to not be such a problem, as Xen created a kernel directory and the
> built in it.  Plain Jane, nothing fancy.
> 
> I've noticed that somewhere since I did this (which was as recent as 3.0.4-1)
> the kernel build now does things a bit different.  Apparently there is some
> sort of build-.... directory where things happen now.
> 
> This is a problem.  I build a number of things against these kernels, not the
> least of which include Coraid's AoE drivers and Redhat's CMAN and DLM stuff.

You should be able to point your external build at the latter and have it
just work:
 make ­C /path/to/build-linux-... M=$PWD modules

 -- Keir


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Re: Building Modules Against Xen Sources

[Jayson Vantuyl]

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Ooops, accidentally hit send too early.  Let me try this again:

I changed the line in buildconfigs/mk.linux-2.6-xen that read:

LINUX_SRCDIR = linux-$(LINUX_VER)-xen

To:

LINUX_SRCDIR = linux-$(LINUX_VER)-$(EXTRAVERSION)

Rest of e-mail still applies.

On Apr 29, 2007, at 3:54 AM, Jayson Vantuyl wrote:

> I'm currently trying to build modules against the kernels created  
> with Xen 3.0.5rc4.
>
> This used to not be such a problem, as Xen created a kernel  
> directory and the built in it.  Plain Jane, nothing fancy.
>
> I've noticed that somewhere since I did this (which was as recent  
> as 3.0.4-1) the kernel build now does things a bit different.   
> Apparently there is some sort of build-.... directory where things  
> happen now.
>
> This is a problem.  I build a number of things against these  
> kernels, not the least of which include Coraid's AoE drivers and  
> Redhat's CMAN and DLM stuff.
>
> I was able to get kernel source directories by adjusting  
> buildconfigs/mk.linux-2.6-xen.  I changed the line that read:
>
> LINUXSRC_DIR=....
>
> to:
>
> LINU
>
> This still requires me to build my kernels a second time to get a  
> good build directory.  Is there a better way to do this?  Can we  
> make this easier?
>
> -- 
> Jayson Vantuyl
> Systems Architect
> Engine Yard
> jvantuyl@engineyard.com
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel



-- 
Jayson Vantuyl
Systems Architect
Engine Yard
jvantuyl@engineyard.com



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Re: Building Modules Against Xen Sources

[Jayson Vantuyl]

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Mmmmm.  I build some of my stuff currently out of Gentoo.  I supposed  
I could hack the ebuild, but in general, I don't think there will  
ever be a substitute for having just a plain kernel tree.  Even if it  
isn't used by default, would it be possible (not necessarily by  
3.0.5) to get a make target to make them?  Pretty please?

On Apr 29, 2007, at 4:27 AM, Keir Fraser wrote:

> On 29/4/07 09:54, "Jayson Vantuyl" <jvantuyl@engineyard.com> wrote:
>
>> I'm currently trying to build modules against the kernels created  
>> with Xen 3.0.5rc4.
>>
>> This used to not be such a problem, as Xen created a kernel  
>> directory and the built in it.  Plain Jane, nothing fancy.
>>
>> I've noticed that somewhere since I did this (which was as recent  
>> as 3.0.4-1) the kernel build now does things a bit different.   
>> Apparently there is some sort of build-.... directory where things  
>> happen now.
>>
>> This is a problem.  I build a number of things against these  
>> kernels, not the least of which include Coraid's AoE drivers and  
>> Redhat's CMAN and DLM stuff.
>
> You should be able to point your external build at the latter and  
> have it just work:
>  make –C /path/to/build-linux-... M=$PWD modules
>
>  -- Keir

-- 
Jayson Vantuyl
Systems Architect
Engine Yard
jvantuyl@engineyard.com



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