Re: Does Linux invalidate TLB entries?

[Ralf Baechle <ralf@oss.sgi.com>]

On Tue, Jan 29, 2002 at 05:03:42PM -0800, Matthew Dharm wrote:

> I'm still trying to track down the cause of all my problems, so I'm
> going over the RM7000 errata.
> 
> I see one here that I'm not sure if it's a problem or not.  It only
> applies to OSes which invalidate TLB entries and thus will cause TLB
> Invalid exceptions (as opposed to a TLB refill exception, I think).
> 
> So, does Linux invalidate TLBs?  I've been looking at the code, and I
> think the answer is 'no', but I'm not really sure.

Yes, Linux may create TLB entries with V=0.

  Ralf