CVS commit: [matt-nb5-mips64] src/sys/arch/mips

["Matt Thomas" <matt%netbsd.org@localhost>]

Module Name:    src
Committed By:   matt
Date:           Thu Jan 12 18:50:33 UTC 2012

Modified Files:
        src/sys/arch/mips/include [matt-nb5-mips64]: cache.h
        src/sys/arch/mips/mips [matt-nb5-mips64]: cache.c pmap_syncicache.c

Log Message:
Add an optimization for UP system with non-virtually tagged caches (which are
most of them these days).

If a page needs to be have an icache_sync performed and the page has a direct
map alias (XKPHYS or KSEG0), then don't do an index op; instead do a range op
on the XKPHYS or KSEG0 address.  This results in unneeded fewer cache line
invalidations.


To generate a diff of this commit:
cvs rdiff -u -r1.9.96.6 -r1.9.96.7 src/sys/arch/mips/include/cache.h
cvs rdiff -u -r1.33.96.10 -r1.33.96.11 src/sys/arch/mips/mips/cache.c
cvs rdiff -u -r1.1.2.1 -r1.1.2.2 src/sys/arch/mips/mips/pmap_syncicache.c

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