From owner-freebsd-arch  Sat Feb 16 23: 0:14 2002
Delivered-To: freebsd-arch@freebsd.org
Received: from rwcrmhc54.attbi.com (rwcrmhc54.attbi.com [216.148.227.87])
	by hub.freebsd.org (Postfix) with ESMTP
	id BAF0137B404; Sat, 16 Feb 2002 23:00:10 -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 <20020217070010.WCPO1214.rwcrmhc54.attbi.com@InterJet.elischer.org>;
          Sun, 17 Feb 2002 07:00:10 +0000
Received: from localhost (localhost.elischer.org [127.0.0.1])
	by InterJet.elischer.org (8.9.1a/8.9.1) with ESMTP id WAA44493;
	Sat, 16 Feb 2002 22:54:52 -0800 (PST)
Message-Id: <200202170654.WAA44493@InterJet.elischer.org>
Date: Sat, 16 Feb 2002 22:54:51 -0800 (PST)
From: Julian Elischer <julian@elischer.org>
To: Matthew Dillon <dillon@apollo.backplane.com>
Cc: Alfred Perlstein <bright@mu.org>,
	Poul-Henning Kamp <phk@critter.freebsd.dk>, arch@FreeBSD.ORG,
	jhb@FreeBSD.ORG, peter@wemm.org, jake@locore.ca
Subject: Re: gettimeofday() and crhold()/crfree() (was Re: gettimeofday()
Sender: owner-freebsd-arch@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-arch.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-arch>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-arch>
X-Loop: FreeBSD.ORG

 and copyout(). Is copyout() MPSAFE on non-i386 archs? )
In-Reply-To: <200202170641.g1H6fRb43456@apollo.backplane.com>
Message-ID: <Pine.BSF.4.21.0202162252490.39539-100000@InterJet.elischer.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII



On Sat, 16 Feb 2002, Matthew Dillon wrote:

> 
> :the whole point is moot..
> :you don't need to get or drop the creds at  all..
> :
> :see the attached patch I'm about to commit a version of..
> 
>     I like it in general, but I don't like INVARIANTS causing so much grief
>     in the SMP path.  If the whole point is to not drop the ucred in the
>     syscall then we shouldn't drop it whether INVARIANTS is set or not.
>     I would like to see the invariants sections simply removed.
> 
>     I like to run with INVARIANTS set, even on production systems, because
>     I like the extra assertions it makes.

I agree but jhb wants to have it that way... He wants to be able to catch 
anyone accessing the ucred of a thread that is in user space. I
personally think we should just remove the code.

> 
>     In anycase, I am going to go ahead and commit the mutex pool part of
>     my patch to cut down on the size of the ucred structure.  Then I'm going
>     to go through and see if we do any other messing around with credentials
>     (like in the NFS code) to determine if removing Giant is still necessary.
> 
> 						-Matt
> 
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-arch" in the body of the message
> 


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