git: kernel - Use higher invltlb synchronization timeout if guest

Aaron LI aly at crater.dragonflybsd.org
Tue Jul 20 16:30:35 PDT 2021


commit 2d20c15fc71e5e5fededb861710511fb82543426
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Thu Jul 15 19:53:36 2021 -0700

    kernel - Use higher invltlb synchronization timeout if guest
    
    * Increase the invltlb synchronization timeout from 10 seconds
      to 60 seconds if running as a guest.  Just in case the host
      is heavily paging the guest, 10 seconds might not be enough.
    
      Of course, performance will be absolutely terrible if broadcast
      IPIs take that long to synchronize, but there isn't anything
      the guest can do about it.

Summary of changes:
 sys/platform/pc64/x86_64/mp_machdep.c | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/2d20c15fc71e5e5fededb861710511fb82543426


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