CVS commit: src/sys/arch/xen/xen

["Manuel Bouyer" <bouyer%netbsd.org@localhost>]

Module Name:    src
Committed By:   bouyer
Date:           Sun Sep 10 15:23:01 UTC 2023

Modified Files:
        src/sys/arch/xen/xen: xen_clock.c

Log Message:
If Xen system time went backward, instead of ignoring the event assume
one tick passed and reinitialise the local state.
If we need to call the hardclock timer several time to catch up missed events,
don't do more than one second in a single event; and schedule the next
event faster.

Hopefully fixes occasionnal
panic: cpu1: time has not advanced in 1501 heartbeats
or
panic: cpu0: softints stuck for 16 seconds
seen in daily Xen atf runs.


To generate a diff of this commit:
cvs rdiff -u -r1.17 -r1.18 src/sys/arch/xen/xen/xen_clock.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.