port-xen/59974: xenbus0: autoconfiguration error: can't get state for device/suspend/event-channel (2)

["campbell+netbsd%mumble.net@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         59974
>Category:       port-xen
>Synopsis:       xenbus0: autoconfiguration error: can't get state for device/suspend/event-channel (2)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-xen-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Feb 08 00:55:00 +0000 2026
>Originator:     Taylor R Campbell
>Release:        10
>Organization:
>Environment:
>Description:
When I boot a NetBSD 10.1 domU, I get various message like this without any context or information about what is wrong:

[     1.000000] timecounter: Timecounter "xen_system_time" frequency 1000000000 Hz quality 10000
[     1.000003] Xen vcpu0 clock: using event channel 5
[     1.000003] timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
[     1.000003] xenbus0: using event channel 1
[     1.000003] xenbus0: autoconfiguration error: can't get state for device/suspend/event-channel (2)
[     1.000003] IPsec: Initialized Security Association Processing.

Either the message is important and it needs to be explained more clearly and the underlying cause is a problem that needs to be fixed, or the message is harmful because it causes warning fatigue.
>How-To-Repeat:
boot NetBSD-10.1 amd64 live image as Xen domU
>Fix:
Yes, please!  Either delete the message or fix the underlying problem.