RE: [Xen-users] what is behind "make world"

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

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> octane indice
> Sent: 12 October 2006 15:09
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] what is behind "make world"
> 
> Hello
> 
> I want to rebuild xen from sources. The documentation says to use:
> make world
> then everything is built.
> 
> I saw a dist/install/tree which contains, I think, evrything.
> 
> But:
> -I use the xen-3.0.2-2. After build, I don't have a xenO and 
> xenU kernel. I
> have:
> vmlinux-syms-2.6.16-xen and vmlinuz-2.6.16-xen. I think that
> vmlinux-syms-2.6.16-xen is dom0 because it is the biggest. Is it true?

Both are the same - vmlinux-syms is just not stripped of symbol
information, and thus larger. 

A while back, Xen stopped producing a separate Dom0/DomU kernel, and
just produce a combined "one-kernel-fits-all" file. This makes sense if
you use modules, but if you use a "monolithic" kernel with all the
driver built-in, it makes the kernel a bit bigger, so may be a cause for
concern if you want to minimize the foot-print of the kernel. 

> 
> -How can choose which part I want to make?
> I want to build the xen.gz binary. How can I? Is it related 
> to the kernel
> source tree?

That is built in the .../xen directory, which is a the same levels as
your linux-2.6.16.13-xen directory. It will end up in the
dist/install/boot directory together with the vmlinuz-<ver>-xen kernel
that you need to install into the /boot directory. ["make install" will
do this for you if you install and build on the same machine]
> 
> -How can I modify the kernel options?
> should I modify the buildconfigs/linux-defconfig_xenU_ia64 or so?
> In documentation, I saw the line:
> make linux-2.6-xen-config CONFIGMODE=menuconfig
> but is it for the xenO? xenU?

As described above, it applies to both, because you use the same kernel.


> 
> -the appendix A in user.pdf docs talks about the intelVT 
> technology. I have
> a Xeon CPU with VT technology. The documentation says that I 
> have to build
> Xen with VT support. For that I need dev86, libvncserver, 
> SDL-dev and SDL.
> OK, I got them. Then what? I type make world and Makefile 
> will automagically
> detect VT and build it with VT support or should I do something else?

Yes, the HVM support is builtin to Xen at all times. 
> 
> Thanks for any help with that. Xen is a great tool.
> 
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