Re: [Xen-devel] Printing debug message from hypervisor

Grzegorz Miłoś
Tue, 10 Jun 2008 13:52:42 -0000

>> I did really mean:
>> xm dmesg
> ok xm dmesg is showing the stuff.
> thanks for the info.
> Does this mean that the printk''s print it to the xenstore??

I don''t think it is stored in xenstore itself, but yes, it is buffered
in Dom0.
>>>
>> Xen can be configured to output it''s messages on the serial
line, and
>> it also puts it in a buffer (console ring) for Dom0''s
attention, xm
>> dmesg should print all the hypervisors output.
> how to enable this???
> by default it does''nt print it on the serial console.

add the following command line options to your xen configuration
(bootloader config):
com1=115200,8n1 console=com1,tty