From owner-freebsd-stable@FreeBSD.ORG Sun May 15 04:23:15 2005 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5B22216A4D0 for ; Sun, 15 May 2005 04:23:15 +0000 (GMT) Received: from carver.gumbysoft.com (carver.gumbysoft.com [66.220.23.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4143343D8C for ; Sun, 15 May 2005 04:23:15 +0000 (GMT) (envelope-from dwhite@gumbysoft.com) Received: by carver.gumbysoft.com (Postfix, from userid 1000) id 36AD572DD4; Sat, 14 May 2005 21:23:15 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by carver.gumbysoft.com (Postfix) with ESMTP id 317C772DCB; Sat, 14 May 2005 21:23:15 -0700 (PDT) Date: Sat, 14 May 2005 21:23:15 -0700 (PDT) From: Doug White To: Steven Hartland In-Reply-To: <00c301c55896$986e20a0$b3db87d4@multiplay.co.uk> Message-ID: <20050514212202.R49081@carver.gumbysoft.com> References: <009901c5588f$b242b150$b3db87d4@multiplay.co.uk> <00c301c55896$986e20a0$b3db87d4@multiplay.co.uk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-stable@freebsd.org Subject: Re: 5.4-RELEASE amd64: Panic isadma_start : bad bounce buffer X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 May 2005 04:23:15 -0000 On Sat, 14 May 2005, Steven Hartland wrote: > Thanks for the confirmation there Doug at least I have a workaround :) As another workaround, add this to loader.conf and reboot: vm.old_contigmalloc="1" This uses the old contigmalloc algorithm which may be more successful as allocating the bounce buffer area. > > Steve > ----- Original Message ----- > From: "Doug White" > > > > This is a known bug; floppy drives don't work on amd64 since the ISA DMA > > buffer gets allocated above 16MB. I don't know if this is something that > > needs to be handled by busdma. > > > ================================================ > This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. > > In the event of misdirection, illegible or incomplete transmission please telephone (023) 8024 3137 > or return the E.mail to postmaster@multiplay.co.uk. > -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org