CVS commit: src/sys/arch/mips

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

Module Name:    src
Committed By:   skrll
Date:           Sun May 11 07:53:28 UTC 2014

Modified Files:
        src/sys/arch/mips/include: pmap.h
        src/sys/arch/mips/mips: pmap.c pmap_segtab.c

Log Message:
Deal with incompatible cache aliases. Specifically,

- always flush an ephemeral page on unmap
- track unmanaged mappings (mappings entered via pmap_kenter_pa) for
  aliases where required and handle appropriately (via pmap_enter_pv)

Hopefully this (finally) addresses the instability reported in the
following PRs:

PR/44900 - R5000/Rm5200 mips ports are broken
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 -r1.62 -r1.63 src/sys/arch/mips/include/pmap.h
cvs rdiff -u -r1.213 -r1.214 src/sys/arch/mips/mips/pmap.c
cvs rdiff -u -r1.7 -r1.8 src/sys/arch/mips/mips/pmap_segtab.c

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