From owner-freebsd-current Thu Sep 24 13:35:35 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA07494 for freebsd-current-outgoing; Thu, 24 Sep 1998 13:35:35 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from thing.dyn.ml.org (dyn1-tnt13-209.detroit.mi.ameritech.net [199.179.188.209]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id NAA07476 for ; Thu, 24 Sep 1998 13:35:29 -0700 (PDT) (envelope-from mcdougall@ameritech.net) Received: from ameritech.net (bsdx [192.168.1.2]) by thing.dyn.ml.org (8.8.8/8.8.7) with ESMTP id QAA13730 for ; Thu, 24 Sep 1998 16:35:22 -0400 (EDT) (envelope-from mcdougall@ameritech.net) Message-ID: <360AAD08.F59C2400@ameritech.net> Date: Thu, 24 Sep 1998 16:35:20 -0400 From: Adam McDougall X-Mailer: Mozilla 4.06 [en] (X11; I; FreeBSD 3.0-BETA i386) MIME-Version: 1.0 To: current@FreeBSD.ORG Subject: Re: options DPT_LOST_IRQ References: <19980924200044.27705@follo.net> <199809241837.MAA28761@pluto.plutotech.com> <19980924213043.19742@follo.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Eivind Eklund wrote: > > On Thu, Sep 24, 1998 at 12:30:29PM -0600, Justin T. Gibbs wrote: > > >This option is necessary due to interrupts being eaten by the serial > > >driver 'fast interrupt' code (which in some cases blocks interrupts > > >longer than the DPT assert them). > > > > Wow. I thought that the fast interrupt code could only cause interrupts > > to be deferred, never eaten. Did anyone ever talk to Bruce about this? > > I didn't, at least, as I don't have the relevant equipment to > reproduce the fault, and didn't learn about it until a month and a > half ago, when somebody else (outside the FreeBSD camp proper) was > already working on fixing that code. However, I believe that project > has been abandoned for the time being. There are (according to my > source - I don't have SMP and don't know the issues) a bunch of > problems related to interrupts and SMP. > > I don't know if the DPT_LOST_IRQ problem only occur on SMP - Adam, do > you have SMP? > Uniprocessor P233mmx, only serial communications being used is mouse. DPT firmware is 07LY. > > I'd hate to have a situation where lots of drivers each have their own > > little timeout handler to deal with this problem. > > I absolutely agree. However, no matter what, it is better for the DPT > to work (with that kind of kludge) than for it to die. Please please please :) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message