git: kernel - pmap - more invltlb stuff

Matthew Dillon dillon at
Thu Dec 31 19:03:58 PST 2009

commit a93980ab4728c8b94efde3c006b8301590b7214a
Author: Matthew Dillon <dillon at>
Date:   Thu Dec 31 18:52:55 2009 -0800

    kernel - pmap - more invltlb stuff
    * Make sure pmap->pm_cache is cleared when a pmap gets reused,
      fixing an issue where the pmap subsystem wasn't properly
      invltlb'ing the recycled pmap due to stale cpu cache bits.
    * Add sysctl vm.dreadful_invltlb (default to off) as a debugging aid.
      Turning this on disables pmap->pm_cache and does an unconditional
      invltlb on every pmap operation.

Summary of changes:
 sys/platform/pc32/i386/pmap.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

DragonFly BSD source repository

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