[suspend/resume] Debugging via console

[Jean-Yves Migeon <jean-yves.migeon%espci.fr@localhost>]

Hi list,

Is there any way to have access to some debugging console through 
hypervisor for a domU?

The goal is to have some kind of "failback" access for basic printk() 
operations for debugging purposes, in case xencons device suspend/resume 
goes horribly wrong in a domU.

There is still the HYPERVISOR_console_io hypercall, but I do not know if 
it is the proper way to do it. BTW, it is restricted to dom0, except 
when Xen is built with debug.

Thanks for your help :)

Cheers,

--
Jean-Yves Migeon
jean-yves.migeon%espci.fr@localhost