Subject: Re: tlb problems with -current.
To: Toru Nishimura <email@example.com>
From: Jason Thorpe <firstname.lastname@example.org>
Date: 05/29/1999 12:35:40
On Sat, 29 May 1999 19:38:24 +0900 (JST)
email@example.com (Toru Nishimura) wrote:
> - some useful VM notions of RO, COW or defered modification attributes
> could be implemented and manipulated by D bit of TLB entryhi register.
> The D bit has many overlapped implications by the software managed MMU
> architecture. I can not figure out how the current code base handles
> COW so far, but the right solution would be heavily coupled with
> TLBmod exception handler. Current code base is very fragile to be
> 'corrected' and I've adandoned to 'improve' it. trap() routine and
> pmap.c are to be reworked (keeping multiprocessor mips64 in mind,
> crossing fingers...)
Sigh, I still owe you a message on how my approach to mod/ref works.
I promise I *will* send you that message before the (long) weekend here
is over :-)
-- Jason R. Thorpe <firstname.lastname@example.org>