The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/conf/XENHVM

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    1 #
    2 # XENHVM -- Xen HVM kernel configuration file for FreeBSD/i386
    3 #
    4 # $FreeBSD$
    5 #
    6 include         GENERIC
    7 ident           XENHVM
    8 
    9 makeoptions     MODULES_OVERRIDE=""
   10 
   11 #
   12 # Adaptive locks rely on a lock-free pointer read to determine the run state
   13 # of the thread holding a lock when under contention; under a virtualisation
   14 # system, the thread run state may not accurately reflect whether the thread
   15 # (or rather its host VCPU) is actually executing.  As such, disable this
   16 # optimisation.
   17 #
   18 options         NO_ADAPTIVE_MUTEXES
   19 options         NO_ADAPTIVE_RWLOCKS
   20 options         NO_ADAPTIVE_SX
   21 
   22 # Xen HVM support
   23 options         XENHVM
   24 device          xenpci

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