umtx/libthr SMP fixes.

[Bryan Liesner]

On Thu, 5 Jun 2003, Terry Lambert wrote:

> I hesistate to suggest this because everyone always gives me
> crap about me not disclosing the bug, but unless you are ready
> to grovel around in locore, and figure out what the root cause
> is for the difference in behaviour, I'm going to say that
> the most likely cause is that a DDB kernel uses more memory.
>
> Given that, I'm going to suggest you try again without DDB,
> but with:
>
> 	options DISABLE_PSE
> 	options DISABLE_PG_G
>
> If it doesn't fix the problem, then you haven't really lost
> anything but the time it takes to compile, reboot, rename,
> and reboot again.

A non disclosure agreement is a non disclosure agreement, so no crap
from me.

I'll give that a try and see if it makes a difference. I don't
remember off of the top of my head from the previous posts on this
subject, but does this bug apply to an Athlon XP as well?

-Bryan