[Xen-users] Can't boot dom0 after upgrading to non-modified kernel

[Sylvain Chevalier <sylvain.chevalier@xxxxxxxxx>]

Hi,

I am migrating my gentoo server from the modified kernel 2.6.38 modified to the plain 3.6.11 kernel from the distribution.

domUs all work fine with the new kernel, after a few changes in the configs (such as changing /dev/sd... to /dev/xvd...) but dom0 won't boot when using the new kernel. It fails saying something like "please append a correct root=" (It reboots right away, I barely have time to read).

In other words, this grub entry works fine (kernel is xen-sources):
root (hd0,1)
kernel /boot/xen.gz dom0_mem=4096M dom0_max_vcpus=1 dom0_vcpus_pin
module /boot/kernel-2.6.38-xen-dom0 root=/dev/sda6


This grub setting fails (kernel is gentoo-sources):
root (hd0,1)
kernel /boot/xen.gz dom0_mem=4096M dom0_max_vcpus=1 dom0_vcpus_pin
module /boot/kernel-3.6.11-gentoo root=/dev/sda6

I have compiled the kernel with all options mentioned in the gentoo xen doc, do you know of anything I might be missing?

Thanks a lot in advance,

Sylvain

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