CVS commit: src/sys/arch/mips/mips

["Nick Hudson" <skrll%netbsd.org@localhost>]

Module Name:    src
Committed By:   skrll
Date:           Wed Apr 23 20:57:15 UTC 2014

Modified Files:
        src/sys/arch/mips/mips: pmap.c vm_machdep.c

Log Message:
Fix a logic inversion introduced with the matt-nb5-mips64 for
pmap_{zero,copy}_page cache alias handing. The check previously used
PG_MD_UNCACHED_P, where it now uses PG_MD_CACHED_P, when considering if
a cache invalidation is required.

Additionally flush the cache for the uarea va to avoid potential (future)
cache aliases in cpu_uarea_free when handing pages back to uvm for later
use.

ok matt@

Hopefully this addresses the instability reported in the following PRs:

PR/44900 - R5000/Rm5200 mips ports are broken
PR/46170 - NetBSD/cobalt 6.0_BETA does not boot
PR/46890 - upcoming NetBSD 6.0 release is very unstable / unusable on cobalt 
qube 2
PR/48628 - cobalt and hpcmips ports are dead


To generate a diff of this commit:
cvs rdiff -u -r1.209 -r1.210 src/sys/arch/mips/mips/pmap.c
cvs rdiff -u -r1.142 -r1.143 src/sys/arch/mips/mips/vm_machdep.c

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