Date: Wed, 30 May 2001 07:35:23 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/i386 vm_machdep.c sys_machdep.c Message-ID: <200105301435.f4UEZNm75635@freefall.freebsd.org>
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jhb 2001/05/30 07:35:23 PDT
Modified files:
sys/i386/i386 vm_machdep.c sys_machdep.c
Log:
We can't grab the sched_lock in set_user_ldt() because when it is called
from cpu_switch(), curproc has been changed, but the sched_lock owner will
not be updated until we return to mi_switch(), thus we deadlock against
ourselves. As a workaround, push the acquire and release of sched_lock out
to the callers of set_user_ldt(). Note that we can't use a mtx_assert() in
set_user_ldt for the same reason.
Sleuting by: tmm
Tested by: tmm, dougb
Revision Changes Path
1.161 +4 -2 src/sys/i386/i386/vm_machdep.c
1.58 +23 -6 src/sys/i386/i386/sys_machdep.c
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