From owner-freebsd-current  Wed Apr 28  9:25:32 1999
Delivered-To: freebsd-current@freebsd.org
Received: from lor.watermarkgroup.com (lor.watermarkgroup.com [207.202.73.33])
	by hub.freebsd.org (Postfix) with ESMTP
	id EEE7D14E94; Wed, 28 Apr 1999 09:25:29 -0700 (PDT)
	(envelope-from luoqi@watermarkgroup.com)
Received: (from luoqi@localhost)
	by lor.watermarkgroup.com (8.8.8/8.8.8) id MAA05043;
	Wed, 28 Apr 1999 12:25:28 -0400 (EDT)
	(envelope-from luoqi)
Date: Wed, 28 Apr 1999 12:25:28 -0400 (EDT)
From: Luoqi Chen <luoqi@watermarkgroup.com>
Message-Id: <199904281625.MAA05043@lor.watermarkgroup.com>
To: luoqi@watermarkgroup.com, phk@critter.freebsd.dk
Subject: Re: HEADS UP! to commit SMP vmspace sharing patches
Cc: current@FreeBSD.ORG, smp@FreeBSD.ORG
Sender: owner-freebsd-current@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

> In message <199904272349.TAA28969@lor.watermarkgroup.com>, Luoqi Chen writes:
> >I'm about to commit the SMP vmspace sharing patch (the %fs approach). All
> >kernel modules will need to be recompiled. Recompilation is not neccessary
> >for user land applications including ps, libkvm and friends.
> >
> >In this %fs approach, per-processor private pages are no longer mapped at
> >identical virtual address for each cpu, instead a new segment descriptor (%fs)
> >is setup to access per-cpu global variables like curproc. 
> 
> How is this accessed from C sources ?
> 
curproc is now a macro defined as an inline asm function.

> --
> Poul-Henning Kamp             FreeBSD coreteam member
> phk@FreeBSD.ORG               "Real hackers run -current on their laptop."
> FreeBSD -- It will take a long time before progress goes too far!
> 

-lq


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