Xen users - Feb 2012 - How to merge the Xen kernel with modules into one single file ?

Hi all,

To boot a Xen from grub, we normally use a Xen kernel and a domain0 kernel &
initrd.img as its modules. Now, I want to merge these three files into one
single kernel file, then I can boot it without modules. I am doing this because
a simulator environment only has one file entry for the kernel. Do you guys have
some hints on how to do that? BTW, I can merge the domain0 kernel &
initrd.img into one file. But I don''t know how to merge the xen kernel
file with the other two files.

Wang zhihao
Best regards

On Tue, Feb 21, 2012 at 9:18 AM, wang zhihao <accept.acm@gmail.com>
wrote:
> Hi all,
>
> To boot a Xen from grub, we normally use a Xen kernel and a domain0 kernel
& initrd.img as its modules. Now, I want to merge these three files into one
single kernel file, then I can boot it without modules.
Why?
> I am doing this because a simulator environment only has one file entry for
the kernel.
What kind of simulator is that?

even qemu should work fine with xen.
>Do you guys have some hints on how to do that? BTW, I can merge the domain0
kernel & initrd.img into one file.
with what?
> But I don''t know how to merge the xen kernel file with the other
two files.
If your environment boots from network, you could probably use mboot:
http://www.syslinux.org/wiki/index.php/Mboot.c32

Another option is to chainload grub4dos by using grub.exe as the
"kernel", and have grub4dos loads other components (xen, kernel, and
initrd) afterwards.

-- 
Fajar

hi,

Am 21.02.2012 um 04:23 schrieb Fajar A. Nugraha:
> Do you guys have some hints on how to do that? BTW, I can merge the domain0
kernel & initrd.img into one file.

build or take the normal initrd you need (/boot/initrd*):

------------
mkdir -p /usr/src/initramfs
cd /usr/src/initramfs
zcat /boot/initrd.img-$(uname -r) | cpio -i
------------

your initrd is now extracted to /usr/src/initramfs

now, build you own kernel (howtos on Google) with option:

CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE="/usr/src/initramfs"

You can also choose, which compress tool you want to use (gzip, bzip2...). After
that, build your kernel.
In the end, you one file, with kernel and initrd inside. But, for every change
in the initram fs, you have to execute "make" in the kernel source.

cu denny
 

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You can compile all required modules into the Linux kernel, but you 
cannot compile Xen
hypervisor into the Linux kernel.

*Niall Fleming BSc. (Hons)*
Systems Administrator
Webanywhere Limited

Phone: 0800 862 0131 Ext: 203
Web: http://www.webanywhere.co.uk

Aire Valley Business Centre, Lawkholme Lane, Keighley, BD21 3BB
Registered in England with company number 4881346

On 21/02/2012 02:18, wang zhihao wrote:
> Hi all,
>
> To boot a Xen from grub, we normally use a Xen kernel and a domain0
kernel&  initrd.img as its modules. Now, I want to merge these three files
into one single kernel file, then I can boot it without modules. I am doing this
because a simulator environment only has one file entry for the kernel. Do you
guys have some hints on how to do that? BTW, I can merge the domain0 kernel&
initrd.img into one file. But I don''t know how to merge the xen kernel
file with the other two files.
>
> Wang zhihao
> Best regards
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xen.org
> http://lists.xensource.com/xen-users

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