Subject: Re: pageable kernel pmap entries
To: Jonathan Stone <jonathan@DSG.Stanford.EDU>
From: Jason Thorpe <firstname.lastname@example.org>
Date: 05/03/1999 16:02:16
On Mon, 03 May 1999 15:44:05 -0700
Jonathan Stone <jonathan@DSG.Stanford.EDU> wrote:
> >What downside are you talking about?
> more TLB misses, more TLB thrashing, ....
> I did *ask* for some justfication of why we were doing this, why it
> was necesary, what the costs were.... In short, what the performance
> tradeoffs were.
> I never saw an answer.
Okay... so, pageable kernel page table entries means "pmap_enter() called
with the `wired' parameter set to FALSE".
I.e. "just like user mappings".
I don't understand what your issue is with it.
-- Jason R. Thorpe <email@example.com>