On Fri, Jul 07, 2023 at 05:10:33PM +0000, Taylor R Campbell wrote:
> > Date: Fri, 7 Jul 2023 17:56:42 +0200
> > From: Manuel Bouyer <bou...@antioche.eu.org>
> >
> > On Fri, Jul 07, 2023 at 01:11:54PM +0000, Taylor R Campbell wrote:
> > > - The magic numbers for debug.crashme.spl_spinout are for evbarm.
> > > On x86, use IPL_SCHED=7, IPL_VM=6, and IPL_SOFTCLOCK=1.
>
> Correction: IPL_SOFTCLOCK=2.
>
> > > 1. cpuctl offline 0
> > > sleep 20
> > > cpuctl online 0
> >
> > With this I get a panic on Xen:
> > [ 225.4605386] panic: kernel diagnostic assertion "kpreempt_disabled()"
> > failed: file
> > "/dsk/l1/misc/bouyer/HEAD/clean/src/sys/kern/kern_heartbeat.c", line 158
> > [...]
> > [ 53.5704682] panic: kernel diagnostic assertion "kpreempt_disabled()"
> > failed: file
> > "/dsk/l1/misc/bouyer/HEAD/clean/src/sys/kern/kern_heartbeat.c", line 158
>
> This was a mistake that arose because I was testing on aarch64 where
> kpreempt_disabled() is always true. Update and try again, please!
>
> sys/kern/kern_heartbeat.c 1.2
> sys/kern/subr_xcall.c 1.36
Yes, with these (and using 2 for IPL_SOFTCLOCK) every test pass now.
thanks ! This allowed me to fix a small bug in Xen's clock initialisation
already :)
--
Manuel Bouyer <bou...@antioche.eu.org>
NetBSD: 26 ans d'experience feront toujours la difference
--
