Date: Sun, 6 Jul 2003 13:25:55 -0400 From: Brian Dean <bsd@bsdhome.com> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/i386/i386 vm_machdep.c Message-ID: <20030706172555.GA4708@neutrino.bsdhome.com> In-Reply-To: <200307061652.h66GqJMp060956@repoman.freebsd.org> References: <200307061652.h66GqJMp060956@repoman.freebsd.org>
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On Sun, Jul 06, 2003 at 09:52:19AM -0700, Brian S. Dean wrote: > bsd 2003/07/06 09:52:19 PDT > > FreeBSD src repository > > Modified files: > sys/i386/i386 vm_machdep.c > Log: > Don't unconditionally reset the hardware debug registers in cpu_exit(), > reset them only if they were previously in use. Unconditionally > resetting the registers wipes them out frequently, which interferes > with their use for kernel debugging. FWIW, it looks like the reset_dbregs() call can be completely removed from cpu_exit(), conditional or not, since cpu_thread_exit() also makes the same call a little bit later in exit1() (by way of thread_exit()). -Brian -- Brian Dean bsd@FreeBSD.org bsd@bsdhome.com http://www.bsdhome.com/ http://www.bdmicro.com/
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