git: vkernel - Change default pre-zeroing of main memory

Matthew Dillon dillon at
Sun Feb 5 18:16:11 PST 2017

commit c5f1256ba86dd0b32671cca8341215a4876a5915
Author: Matthew Dillon <dillon at>
Date:   Sun Feb 5 17:32:08 2017 -0800

    vkernel - Change default pre-zeroing of main memory
    * Do not pre-zero memory by default, because it interferes with the
      ability to feed NUMA associations down into the vkernel.
    * Add the -z option to force pre-zeroing of memory, which can be
      useful when doing basic benchmarking (to avoid the overhead of the
      vkernel having to do initial-pageins of its main memory, which can
      extend over a long period of time).

Summary of changes:
 share/man/man7/vkernel.7               | 12 +++++++++++-
 sys/platform/vkernel64/platform/init.c | 12 +++++++++---
 2 files changed, 20 insertions(+), 4 deletions(-)

DragonFly BSD source repository

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