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

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hello,

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

Regards,

-- 
Julien Grall

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