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[Xen-users] Unable to boot patched kernel (bzImage not being generated)

  • To: Xen List <Xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: Christian Gonzalez <zulsolar@xxxxxxxxx>
  • Date: Tue, 16 Nov 2010 17:11:58 -0300
  • Cc:
  • Delivery-date: Tue, 16 Nov 2010 12:13:12 -0800
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I'm trying to run Xen 4.0.1 on top of Slackware 13.1 32bits. I managed to install grub on it, managed to install Xen but I'm not able to boot with a xenified kernel for Dom0.

With Xen enable (CONFIG_X86_XEN=y), bzImage is not created, vmlinuz created not able to boot. If I disable Xen, everything is fine.

This is the vmlinuz generated with Xen enable:

root@slacktest1:/usr/src/linux- file arch/x86/boot/vmlinuz
arch/x86/boot/vmlinuz: gzip compressed data, from Unix, last modified: Tue Nov 16 12:48:20 2010, max compression
root@slacktest1:/usr/src/linux- find .ÂÂ -name arch/x86/boot/bzImage

I'm not able to boot from this patched kernel, even with an initrd image.

Just FYI, this is a bzImage that actually works:

root@slacktest1:/usr/src/linux# file arch/x86/boot/bzImage
arch/x86/boot/bzImage: Linux kernel x86 boot executable bzImage, version (root@slacktest1) , RO-rootFS, swap_dev 0x2, Normal VGA
root@slacktest1:/usr/src/linux# find . -name bzImage

This is menu.lst Xen related:

# Linux bootable partition config begins
 title Linux-Xen on (/dev/sda1)
 root (hd0,0)
 kernel /xen.gz
 module /vmlinuz- ro root=/dev/rootvg/root rd_LVM_LV=rootvg/root vga=788
 module /initrd8.img
# Linux bootable partition config ends

Even if I try to boot from xenified kernel without /xen.gz module, this is the grub error I got:

Error 13: Invalid or unsupported executable format

 root (hd0,0)
 kernel /vmlinuz- ro root=/dev/rootvg/root rd_LVM_LV=rootvg/root vga=788
 initrd /initrd8.img

I also noticed that if I enable Xen, Kernel compression mode (-> General setup) I have only one choice, Gzip. With Xen disabled, these are my choices:

Not sure if this is related or not.

Patches are from Andrew's (http://code.google.com/p/gentoo-xen-kernel/downloads/list) Kernel is vanilla.

Any light on this will be highly appreciated.

Thanks and regards.

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