> At 6:44 -0700 9/12/00, Paul Kranenburg wrote:
> >Module Name:	syssrc
> >Committed By:	pk
> >Date:		Tue Sep 12 13:43:56 UTC 2000
> >
> >Modified Files:
> >	syssrc/sys/arch/sparc/sparc [netbsd-1-5]: cpu.c
> >
> >Log Message:
> >Pullup rev. 1.106->1.107 (approved by thorpej):
> >
> >>  revision 1.107
> >>  date: 2000/09/10 11:32:04;  author: pk;  state: Exp;  lines: +17 -2
> >>  Turn off page zeroing in the idle loop; an unidentified bug causes (very
> >>  sporadic) user process corruption.
> >
> >(actually applies to Microsparc 1 machines only).
> 
> There are only two microSPARC I CPU systems that Sun ever made: the 
> SPARC Classic, and the SPARC LX (well, and the "X terminal" 
> configurations of those two). Everything else since is microSPARC II, 
> including the Voyager, SS4, and SS5.
> 
> Can't this be shut off at boot after the CPU type is detected (or 
> turned on for all CPUs except the microSPARC I)?

You most certainly should be doign page zeroing in the idle loop, too.

And I agree with you on this one. Has anyone picked up the Linux/PPC hack for
doing pagezero's bypassing the cache?