cvs commit: src/sys/amd64/amd64 cpu_switch.S machdep.c

Andre Oppermann andre at freebsd.org
Tue Oct 18 11:49:04 PDT 2005


Poul-Henning Kamp wrote:
> 
> In message <435527DD.3040007 at root.org>, Nate Lawson writes:
> 
> >I have good information that in the near future, most designs will have
> >guaranteed synchronized TSC across all CPUs.
> 
> ...and when those chips arrive, we can hopefully identify them by some
> bit in some MSR and then we can use the TSC on them.
> 
> This is a good move and it is only too bad that it's taken the chip
> manufacturers 10 years to figure this out.

Considering that Nate knows about it and that it took cpu manufacturers
so I suspect they did it to make some DRM schemes work.

-- 
Andre


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