CVS commit: src/sys/arch/x86

["Andrew Doran" <ad%netbsd.org@localhost>]

Module Name:    src
Committed By:   ad
Date:           Tue Mar 10 22:38:42 UTC 2020

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

Log Message:
- pmap_check_inuse() is expensive so make it DEBUG not DIAGNOSTIC.

- Put PV locking back in place with only a minor performance impact.
  pmap_enter() still needs more work - it's not easy to satisfy all the
  competing requirements so I'll do that with another change.

- Use pmap_find_ptp() (lookup only) in preference to pmap_get_ptp() (alloc).
  Make pm_ptphint indexed by VA not PA.  Replace the per-pmap radixtree for
  dynamic PV entries with a per-PTP rbtree.  Cuts system time during kernel
  build by ~10% for me.


To generate a diff of this commit:
cvs rdiff -u -r1.110 -r1.111 src/sys/arch/x86/include/pmap.h
cvs rdiff -u -r1.12 -r1.13 src/sys/arch/x86/include/pmap_pv.h
cvs rdiff -u -r1.362 -r1.363 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.