From owner-freebsd-current Wed Feb 27 9:47:36 2002 Delivered-To: freebsd-current@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by hub.freebsd.org (Postfix) with ESMTP id 8341837B402; Wed, 27 Feb 2002 09:47:25 -0800 (PST) Received: (from dillon@localhost) by apollo.backplane.com (8.11.6/8.9.1) id g1RHlOD27988; Wed, 27 Feb 2002 09:47:24 -0800 (PST) (envelope-from dillon) Date: Wed, 27 Feb 2002 09:47:24 -0800 (PST) From: Matthew Dillon Message-Id: <200202271747.g1RHlOD27988@apollo.backplane.com> To: Terry Lambert Cc: peter@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: you broke current in some weird way... etc References: <95075.1014756753@critter.freebsd.dk> <200202271733.g1RHXmh27846@apollo.backplane.com> <3C7D1A14.C3390B6C@mindspring.com> Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG :Matthew Dillon wrote: :> :date: 2002/02/27 09:51:32; author: peter; state: Exp; lines: +245 -191 :> :Back out all the pmap related stuff I've touched over the last few days. :> :There is some unresolved badness that has been eluding me, particularly :> :affecting uniprocessor kernels. Turning off PG_G helped (which is a bad :> :sign) but didn't solve it entirely. Userland programs still crashed. :> :> I'm just going to use this opportunity to plug the concept of temporary :> sysctl-instrumentation for a commit like this. : :Overall, this is a good idea. However, it can't apply to :any code that runs before init_main.c runs the SI_SUB_TUNABLES. : :-- Terry Sure it does, because it means you can simply commit a change to the default assignment for that sysctl rather then backing the whole thing out to unbreak the general developer community. That saves a lot of time and removes the 'oh hell, I have to track this down quickly!' pressure. Sometimes features in early boot can be adjusted by breaking into DDB and w/l changing the sysctl variable, but perhaps not in this case. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message