From owner-cvs-all@FreeBSD.ORG  Wed Apr  2 18:08:54 2003
Return-Path: <owner-cvs-all@FreeBSD.ORG>
Delivered-To: cvs-all@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 0569037B401; Wed,  2 Apr 2003 18:08:54 -0800 (PST)
Received: from canning.wemm.org (canning.wemm.org [192.203.228.65])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 8B85643F3F; Wed,  2 Apr 2003 18:08:53 -0800 (PST)
	(envelope-from peter@wemm.org)
Received: from wemm.org (localhost [127.0.0.1])
	by canning.wemm.org (Postfix) with ESMTP
	id 704CC2A8A7; Wed,  2 Apr 2003 18:08:53 -0800 (PST)
	(envelope-from peter@wemm.org)
X-Mailer: exmh version 2.5 07/13/2001 with nmh-1.0.4
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
	cvs-all@FreeBSD.org
In-Reply-To: <200304022353.h32NrUVZ042513@repoman.freebsd.org> 
Date: Wed, 02 Apr 2003 18:08:53 -0800
From: Peter Wemm <peter@wemm.org>
Message-Id: <20030403020853.704CC2A8A7@canning.wemm.org>
Subject: Re: cvs commit: src/sys/conf options.i386 src/sys/i386/i386
	machdep.c mp_machdep.c pmap.c swtch.s src/sys/i386/include md_var.h
	pmap.h smp.h src/sys/i386/isa apic_vector.s intr_machdep.h
	src/sys/kern kern_switch.c kern_synch.c kern_thr.c kern_thread.c
	subr_witness.c ... 
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 03 Apr 2003 02:08:54 -0000

Peter Wemm wrote:
>   Log:
>   Commit a partial lazy thread switch mechanism for i386.

I'd been wanting to do this for ages, but Jake implemented it on the
sparc64 a while ago now and he kinda shamed me into doing it. :-)

The main difference is that sparc64 doesn't have to go to the trouble of
intercepting the pmap_release() since the VM hardware is different and it
doesn't have to worry about a potentially borrowed page directory getting
bzero()'ed.

Cheers,
-Peter
--
Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com
"All of this is for nothing if we don't go to the stars" - JMS/B5