From owner-freebsd-current  Thu Mar 14 15:20:22 2002
Delivered-To: freebsd-current@freebsd.org
Received: from rwcrmhc54.attbi.com (rwcrmhc54.attbi.com [216.148.227.87])
	by hub.freebsd.org (Postfix) with ESMTP id 79E5237B419
	for <freebsd-current@FreeBSD.ORG>; Thu, 14 Mar 2002 15:20:08 -0800 (PST)
Received: from InterJet.elischer.org ([12.232.206.8])
          by rwcrmhc54.attbi.com
          (InterMail vM.4.01.03.27 201-229-121-127-20010626) with ESMTP
          id <20020314232008.JRVP1214.rwcrmhc54.attbi.com@InterJet.elischer.org>;
          Thu, 14 Mar 2002 23:20:08 +0000
Received: from localhost (localhost.elischer.org [127.0.0.1])
	by InterJet.elischer.org (8.9.1a/8.9.1) with ESMTP id PAA82445;
	Thu, 14 Mar 2002 15:07:59 -0800 (PST)
Date: Thu, 14 Mar 2002 15:07:58 -0800 (PST)
From: Julian Elischer <julian@elischer.org>
To: Matthew Dillon <dillon@apollo.backplane.com>
Cc: Poul-Henning Kamp <phk@critter.freebsd.dk>,
	Alfred Perlstein <bright@mu.org>, David Greenman <dg@root.com>,
	John Indra <maverick@office.naver.co.id>, freebsd-current@FreeBSD.ORG
Subject: Re: malloc() and the stock Perl in -CURRENT (and -STABLE) 
In-Reply-To: <200203142304.g2EN4wO49736@apollo.backplane.com>
Message-ID: <Pine.BSF.4.21.0203141506540.81090-100000@InterJet.elischer.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-current@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-current.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-current>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-current>
X-Loop: FreeBSD.ORG



On Thu, 14 Mar 2002, Matthew Dillon wrote:

> 
> :thing to do in FreeBSD ?  :-)
> :
> :And everybody with VM clue I've asked says it would be trivial to
> :flip two page-table entries, so for all I care it can be
> :
> :	mexchangemapping(void *from, void *to, size_t length)
> :
> :-- 
> :Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> :phk@FreeBSD.ORG         | TCP/IP since RFC 956
> :FreeBSD committer       | BSD since 4.3-tahoe    
> 
>     Or
> 
>     mcopymap(from, to, length, flags)

I'm not sure you want to copy it..
I mean you want the dta di disappear from the old address.
It's more a "movepages()"

> 
>     flags:
> 
> 	MAP_SHARED	share the same content (we back them with the
> 			same VM objects).
> 
> 	MAP_PRIVATE	copy on write, as if you fork()d and the parent
> 			was the original area and the child is the new 
> 			area.
> 
>     But I'm not volunteering.
> 
> 					-Matt
> 					Matthew Dillon 
> 					<dillon@backplane.com>
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-current" in the body of the message
> 


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message