PR/57980 CVS commit: src/sys

["Tetsuya Isaki" <isaki%netbsd.org@localhost>]

The following reply was made to PR kern/57980; it has been noted by GNATS.

From: "Tetsuya Isaki" <isaki%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/57980 CVS commit: src/sys
Date: Tue, 5 Mar 2024 11:19:31 +0000

 Module Name:	src
 Committed By:	isaki
 Date:		Tue Mar  5 11:19:30 UTC 2024
 
 Modified Files:
 	src/sys/arch/virt68k/dev: gfrtc_mainbus.c
 	src/sys/dev/goldfish: gfrtc.c
 
 Log Message:
 Fix two problems that the time runs late on virt68k.
 - The time between the time the alarm occurred and the time read by
   TIME_* register in the next interrupt handler was not accumulated.
 - With the one-shot timer method, once the host time prolongs, the
   guest time will never be able to catch up with the host time again.
 New one does:
 - The driver maintains its (guest's) time (as sc_alarm_time) and always
   set the next alarm sc_interval_ns after the previous alarm.
 - gfrtc_set_alarm() takes an absolute time instead of a relative time
   as the argument.
 PR kern/57980.  Confirmed on QEMU.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.2 -r1.3 src/sys/arch/virt68k/dev/gfrtc_mainbus.c
 cvs rdiff -u -r1.4 -r1.5 src/sys/dev/goldfish/gfrtc.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.