CVS commit: src/sys/arch/x86

[Christoph Egger <cegger%netbsd.org@localhost>]

Module Name:    src
Committed By:   cegger
Date:           Sat Apr 18 08:51:46 UTC 2009

Modified Files:
        src/sys/arch/x86/include: pmap.h
        src/sys/arch/x86/x86: bus_dma.c pmap.c

Log Message:
Introduce PMAP_NOCACHE as first PMAP MD bit in x86. Make use of it in 
pmap_enter().
This safes one extra TLB flush when mapping dma-safe memory.
Presented on tech-kern@, port-i386@ and port-amd64@
ok ad@


To generate a diff of this commit:
cvs rdiff -u -r1.22 -r1.23 src/sys/arch/x86/include/pmap.h
cvs rdiff -u -r1.49 -r1.50 src/sys/arch/x86/x86/bus_dma.c
cvs rdiff -u -r1.82 -r1.83 src/sys/arch/x86/x86/pmap.c

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