cvs commit: src/sys/i386/i386 vm_machdep.c

[Brian Dean]

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 at FreeBSD.org
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