CVS commit: src/sys/arch/m68k/m68k

["Jason R Thorpe" <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Thu May  7 07:14:48 UTC 2026

Modified Files:
        src/sys/arch/m68k/m68k: pmap_68k.c

Log Message:
Avoid some premature optimization in pmap_enter() and pmap_changebit(),
flushing the ATC entry for the VA when more bits other than the "critical"
cache-inhibit and write-protect bits change.  We want to avoid a situation
where the ATC has a stale U or M bit that's been cleared from the PTE out
in RAM, which can lead to a situation where the U or M bit doesn't get
written back because the MMU doesn't think it's transitioned from 0 to 1.


To generate a diff of this commit:
cvs rdiff -u -r1.64 -r1.65 src/sys/arch/m68k/m68k/pmap_68k.c

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