From owner-freebsd-arch@FreeBSD.ORG Wed Apr 15 21:51:42 2009 Return-Path: Delivered-To: arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6A2F0106566B; Wed, 15 Apr 2009 21:51:42 +0000 (UTC) (envelope-from p.pisati@oltrelinux.com) Received: from joe.mail.tiscali.it (joe.mail.tiscali.it [213.205.33.54]) by mx1.freebsd.org (Postfix) with ESMTP id ED4AC8FC0A; Wed, 15 Apr 2009 21:51:41 +0000 (UTC) (envelope-from p.pisati@oltrelinux.com) Received: from newluxor.wired.org (94.36.100.254) by joe.mail.tiscali.it (8.0.022) id 499F03960284E95E; Wed, 15 Apr 2009 23:40:26 +0200 Message-ID: <49E65448.4090302@oltrelinux.com> Date: Wed, 15 Apr 2009 23:40:24 +0200 From: Paolo Pisati User-Agent: Thunderbird 2.0.0.18 (X11/20081214) MIME-Version: 1.0 To: Marcel Moolenaar References: <200904151324.06754.jhb@freebsd.org> <16C23095-4023-499D-896C-8A7A478FDCE4@mac.com> <200904151613.50568.jhb@freebsd.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: arch@freebsd.org Subject: Re: Enabling interrupt filters by default X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Apr 2009 21:51:42 -0000 Marcel Moolenaar wrote: > > August 2007. AFAIK there were different menaces to turn it on but i was never done. > > There was interrupt starvation on sparc64. there were problems with some bridges back then, but i don't know the status today: you could try and tell us :) > There were also > issues with permanently masking stray interrupts. This is > problematic when interrupts are shared and there is at least > 1 filter on it. IIRC that was my mistake trying to cool down interrupt storms, and that piece of code was removed.