From owner-freebsd-stable Sat Mar 3 16:20:41 2001 Delivered-To: freebsd-stable@freebsd.org Received: from whizzo.transsys.com (whizzo.TransSys.COM [144.202.42.10]) by hub.freebsd.org (Postfix) with ESMTP id DC9F937B71B for ; Sat, 3 Mar 2001 16:20:37 -0800 (PST) (envelope-from louie@whizzo.transsys.com) Received: from whizzo.transsys.com (localhost.transsys.com [127.0.0.1]) by whizzo.transsys.com (8.11.2/8.11.0) with ESMTP id f240KQW50170; Sat, 3 Mar 2001 19:20:31 -0500 (EST) (envelope-from louie@whizzo.transsys.com) Message-Id: <200103040020.f240KQW50170@whizzo.transsys.com> X-Mailer: exmh version 2.3.1 01/18/2001 with nmh-1.0.4 To: Kris Kennaway Cc: Danny Braniss , FreeBSD-stable X-Image-URL: http://www.transsys.com/louie/images/louie-mail.jpg From: "Louis A. Mamakos" Subject: Re: wchan kqread References: <20010303144716.A33685@mollari.cthul.hu> In-reply-to: Your message of "Sat, 03 Mar 2001 14:47:16 PST." <20010303144716.A33685@mollari.cthul.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sat, 03 Mar 2001 19:20:26 -0500 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > On Sat, Mar 03, 2001 at 05:47:28PM +0200, Danny Braniss wrote: > > i did, but did not compile it :-), since all i did was to reconfigure a kernel. > > > > now it works again. thanks! > > > > btw, what is the way of knowing when a change in the kernel affects userland > > programs? > > You can't, but you're expected to build a new world each time you > update your kernel sources. The kernel and userland are an inseparable > whole, and you'll generally have weird problems if you only do one or > the other. Uh, I certainly hope not. My understanding is that the kernel interfaces are generally upwards compatible; that is, you can most to a newer kernel without major impact to existing userland software. If this upwards compatability isn't working, then that's a bug. The reverse may not be true; new userland code may take advantage of new kernel services or APIs. louie To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message