CVS commit: src/sys/arch

[YAMAMOTO Takashi <yamt%netbsd.org@localhost>]

Module Name:    src
Committed By:   yamt
Date:           Sun Jan 20 13:43:38 UTC 2008

Modified Files:
        src/sys/arch/amd64/include: vmparam.h
        src/sys/arch/i386/include: vmparam.h
        src/sys/arch/x86/include: Makefile pmap.h
        src/sys/arch/x86/x86: pmap.c
Added Files:
        src/sys/arch/x86/include: pmap_pv.h

Log Message:
- rewrite P->V tracking.
        - use a hash rather than SPLAY trees.
          SPLAY tree is a wrong algorithm to use here.
          will be revisited if it slows down anything other than
          micro-benchmarks.
        - optimize the single mapping case (it's a common case) by
          embedding an entry into mdpage.
        - don't keep a pmap pointer as it can be obtained from ptp.
          (discussed on port-i386 some years ago.)
          ideally, a single paddr_t should be enough to describe a pte.
          but it needs some more thoughts as it can increase computational
          costs.
- pmap_enter: simplify and fix races with pmap_sync_pv.
- don't bother to lock pm_obj[i] where i > 0, unless DIAGNOSTIC.
- kill mp_link to save space.
- add many KASSERTs.


To generate a diff of this commit:
cvs rdiff -r1.17 -r1.18 src/sys/arch/amd64/include/vmparam.h
cvs rdiff -r1.66 -r1.67 src/sys/arch/i386/include/vmparam.h
cvs rdiff -r1.11 -r1.12 src/sys/arch/x86/include/Makefile
cvs rdiff -r1.10 -r1.11 src/sys/arch/x86/include/pmap.h
cvs rdiff -r0 -r1.1 src/sys/arch/x86/include/pmap_pv.h
cvs rdiff -r1.38 -r1.39 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.