Re: Tlb shutdown bit

[Ralf Baechle <ralf@xxxxxxxxxxx>]

On Fri, Apr 07, 2000 at 12:11:46PM -0700, Kanoj Sarcar wrote:

> For now, I am clearing the TS bit on entry into the kernel, and things
> aren't too crazy ... except I keep on wondering what is making the 
> TS get set, and whether it has any connection to me not being able
> to talk to processors on other nodes (via prom routines).

At what time are you trying to launch the other processors?  The experience
I made over the last few years is that most firware is rather fragile,
so my own code for launching the CPUs launches them in the very early
startup phase and leaves them waiting with interrupts disabled in a
spinlock.  Later on the kernel actually launches the processors by
unlocking these spinlocks.  This seem to have mostly solved the problems
that I was observing with my own code.

  Ralf