Date: Fri, 24 Aug 2001 16:01:00 -0700 (PDT) From: Bosko Milekic <bmilekic@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern kern_mutex.c Message-ID: <200108242301.f7ON10437938@freefall.freebsd.org>
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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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