From owner-freebsd-emulation@FreeBSD.ORG Mon Mar 17 13:46:58 2008 Return-Path: Delivered-To: freebsd-emulation@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B0DE9106566C for ; Mon, 17 Mar 2008 13:46:58 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (unknown [IPv6:2a01:170:102f::2]) by mx1.freebsd.org (Postfix) with ESMTP id 254328FC24 for ; Mon, 17 Mar 2008 13:46:57 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (localhost [127.0.0.1]) by lurza.secnetix.de (8.14.1/8.14.1) with ESMTP id m2HDkpSc042695; Mon, 17 Mar 2008 14:46:56 +0100 (CET) (envelope-from oliver.fromme@secnetix.de) Received: (from olli@localhost) by lurza.secnetix.de (8.14.1/8.14.1/Submit) id m2HDkpre042693; Mon, 17 Mar 2008 14:46:51 +0100 (CET) (envelope-from olli) From: Oliver Fromme Message-Id: <200803171346.m2HDkpre042693@lurza.secnetix.de> To: kostikbel@gmail.com (Kostik Belousov) Date: Mon, 17 Mar 2008 14:46:51 +0100 (CET) In-Reply-To: <20080317104749.GU10374@deviant.kiev.zoral.com.ua> X-Mailer: ELM [version 2.5 PL8] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.1.2 (lurza.secnetix.de [127.0.0.1]); Mon, 17 Mar 2008 14:46:56 +0100 (CET) Cc: freebsd-emulation@freebsd.org Subject: Re: qemu coredumps on RELENG_7 X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Development of Emulators of other operating systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 Mar 2008 13:46:58 -0000 Kostik Belousov wrote: > Oliver Fromme wrote: > > Anyway, further examination seems to indicate that the > > problem is related to harddisk DMA. Is there a known > > problem with it on FreeBSD with qemu? > > > > Unfortunately, using PIO for the harddisk (in order to > > avoid qemu crashing) makes the emulated system very > > slow, so it's unusable for any production work. > > Definitely, > kldload aio > before running qemu. Thank you, that seems to solve the problem indeed. Is that documented somewhere? It's not in the manpage. I think it should be in the manpage ... would have saved me quite some time. Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd "... there are two ways of constructing a software design: One way is to make it so simple that there are _obviously_ no deficiencies and the other way is to make it so complicated that there are no _obvious_ deficiencies." -- C.A.R. Hoare, ACM Turing Award Lecture, 1980