Re: Linux 2.5.38

From: Linus Torvalds (
Date: Sun Sep 22 2002 - 21:27:18 EST

On Mon, 23 Sep 2002, Michel Eyckmans (MCE) wrote:
> The boot time lock up, that I have indeed encountered intermittently ever
> since switching to 2.5.3{01}, may indeed be gone, but the one where just
> moving my mouse around locks things up in a matter of seconds hasn't.

That may just be due to the new mouse driver and/or input layer, which
went in some weeks ago. What kind of mouse (and if it is a PS/2 mouse, can
you get a loaner USB mouse to test with, for example?)

> Someone recently reported having similar problems and fixing them by
> disabling MTRR, but this cannot be the entire story since I never had it
> enabled in the first place. No wonder, on a dual P5 machine...

There was a separate MTRR atomicity problem that would cause extreme
slowdowns on SMP with MTRR enabled when X was started, because the MTRR
code would have re-entrancy problems and potentially leave the caches
disabled. That should have been fixed in 2.5.36.


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This archive was generated by hypermail 2b29 : Mon Sep 23 2002 - 22:00:37 EST