[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] How to display dom0 kernel printk on hvc0


On 08/07/2014 09:23 AM, manish jaggi wrote:
> I am debugging a kernel crash when I start xencommons. If I add prints
> in kernel the prints are only visible in dmesg and not on dom0 console.
> This makes it difficult to view kernel printks at the time of crash.
> I tried xen_raw_printks but the print only comes when you press a key,
> so while a crash is happening you cannot press a key.
> Is there a way to enable printks on hvc0 

every printk in the kernel should be printed in hvc if you pass
console=hvc0 on the kernel command line.

You may also have to add ignore_loglevel


Julien Grall

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.