Re: [PATCH v1] keyhandler: add handler to show Xen command line

Juergen Gross <[email protected]> Thu, 30 Jul 2026 08:41:58 +0200
Newsgroups gmane.comp.emulators.xen.devel
Message-ID <[email protected]>
On 30.07.26 08:15, [email protected] wrote:
> From: Denis Mukhin <[email protected]>
> 
> Currently there's no way to print Xen command line on the emergency console
> for debugging purposes.
> 
> Add new keyhander 'C' to add (saved) command line printout for debugging
> the system.

'C' is already taken for "trigger a crashdump". Many keyhandlers are
registered dynamically via register_keyhandler().

What about 'X' for "General Xen information"?

This would allow for adding more information later, like e.g. physical
memory size, number of CPUs, number of active domains, etc., without the
need of burning another debug key for that.


Juergen
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