Subject: Re: 64 bit instructions
To: Toru Nishimura <nisimura@itc.aist-nara.ac.jp>
From: Simon Burge <simonb@wasabisystems.com>
List: port-mips
Date: 09/16/2000 17:26:42
Toru Nishimura wrote:

> > is anyone actively working on 64 bit mips3 support?
> 
> Hey, could someone out there just run scratch-and-built of pmap.c? 
> 
> Current approach of TLB/ASID is designed just wrong.  It costs severe
> performance loss.  When PTE protection attribute is about to be
> changed for a range of user address space, bumping ASID for the pmap
> is the most effective solution with no cost.  Trash away TLBUpdate()!
> It's the cause of why fork/exec runs miserably.

Jason Thorpe has been saying "pinch the Alpha pmap" for a long time...

Any volunteers? :)

Simon.
--
Simon Burge                            <simonb@wasabisystems.com>
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