CVS commit: [netbsd-6-0] src/sys/arch/mips/mips

["Soren Jacobsen" <snj%netbsd.org@localhost>]

Module Name:    src
Committed By:   snj
Date:           Wed Nov  8 21:17:46 UTC 2017

Modified Files:
        src/sys/arch/mips/mips [netbsd-6-0]: pmap.c vm_machdep.c

Log Message:
Pull up following revision(s) (requested by skrll in ticket #1056):
        sys/arch/mips/mips/pmap.c: revision 1.210-1.213
        sys/arch/mips/mips/vm_machdep.c: revision 1.143
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
Grab pv_list lock in pmap_unmap_ephemeral_page only when needed.
Make PARANOIADIAG compile.
Use pmap_tlb_asid_check to reduce code c&p.


To generate a diff of this commit:
cvs rdiff -u -r1.207.2.1 -r1.207.2.1.4.1 src/sys/arch/mips/mips/pmap.c
cvs rdiff -u -r1.141 -r1.141.12.1 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.