From owner-cvs-all  Fri Aug 24 16: 1: 5 2001
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From: Bosko Milekic <bmilekic@FreeBSD.org>
Date: Fri, 24 Aug 2001 16:01:00 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/kern kern_mutex.c
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bmilekic    2001/08/24 16:01:00 PDT

  Modified files:
    sys/kern             kern_mutex.c 
  Log:
  Force a commit on kern_mutex.c to explain reason for last commit but while
  I'm at it also add a comment in mtx_validate() explaining the purpose
  of the last change.
  
  Basically, this fixes booting kernels compiled with MUTEX_DEBUG. What used
  to happen is before we setidt from init386() [still using BTX idt], we
  called mtx_init() on several mutex locks, notably Giant and some others.
  This is a problem for MUTEX_DEBUG because it enables mtx_validate() which
  calls kernacc(), some of which in turn requires Giant.
  Fix by calling kernacc() from mtx_validate() only if (!cold).
  
  Revision  Changes    Path
  1.67      +6 -1      src/sys/kern/kern_mutex.c


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