git: x86_64: Allow TSC MP synchronization test be disabled.

[Michael Neumann]

On 10/24/17 15:21, Sepherosa Ziehau wrote:
> commit 33bb59d933c5d9062ff9791e73bf4be31a314bbd
> Author: Sepherosa Ziehau <sephe at dragonflybsd.org>
> Date:   Tue Oct 24 12:54:44 2017 +0800
> 
>      x86_64: Allow TSC MP synchronization test be disabled.
> 
> Summary of changes:
>   sys/platform/pc64/isa/clock.c | 8 +++++++-
>   1 file changed, 7 insertions(+), 1 deletion(-)
> 
> http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/33bb59d933c5d9062ff9791e73bf4be31a314bbd


Disabling TSC MP synchronization fixes the problem [1] I see on an
Acer TravelMate Spin B laptop.


Regards,

   Michael

[1]: http://bugs.dragonflybsd.org/issues/3087