git: DragonFly_RELEASE_4_6 kernel - Deal with lost IPIs (VM related) (2)

Matthew Dillon dillon at
Sun Sep 11 18:12:12 PDT 2016

commit df78d2169d3d0841b92d907489b01965bf4015f0
Author: Matthew Dillon <dillon at>
Date:   Tue Sep 6 18:09:14 2016 -0700

    kernel - Deal with lost IPIs (VM related) (2)
    * Fix an issue where Xinvltlb interacts badly with a drm console framebuffer,
      imploding the machine.  The 1/16 second watchdog can trigger during certain
      DRM operations due to excessive interrupt disablement in the linux DRM code.
    * Avoid kprintf()ing anything by default.
    * Also make a minor fix to the watchdog logic to force the higher-level
      Xinvltlb loop to re-test.

Summary of changes:
 sys/platform/pc64/x86_64/pmap_inval.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

DragonFly BSD source repository

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