[FS#787] no console in Xen-DomU guests

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Sven Roederer (SAm0815) 

Attached to Project - LEDE Project
Summary - no console in Xen-DomU guests
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - All
Due in Version - Undecided
Due Date - Undecided
Details - after upgrading my Xen-domU-guest to v17.01.1 I found the console is not working anymore. I can only get the kernellog-output.

My old working system was based on git-c71e13a. I checked V17.01-rc1 which is also broken. Further bisecting gave git-b36e24f39e63 (x86: remove the xen_domu subtarget) causing this.

So it looks like some kernel-options are missing, after this merge of sub-targets. I did not find in the kernel-config the relevant.

my domU-config is as follows:

memory          =  64
name            = "lede-test"
on_crash        = "destroy"
vif             =  [ "mac=02:00:0a:ff:00:01, bridge=br-lan" ]

bootloader  = '/usr/lib/xen-4.4/bin/pygrub'
disk        = ["/mnt/xen-images/openwrt/lede-x86-generic-combined-ext4.img,raw,xvda,w"]

Any Ideas?

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=787