Date: Mon, 17 Mar 2008 14:46:51 +0100 (CET) From: Oliver Fromme <olli@lurza.secnetix.de> To: kostikbel@gmail.com (Kostik Belousov) Cc: freebsd-emulation@freebsd.org Subject: Re: qemu coredumps on RELENG_7 Message-ID: <200803171346.m2HDkpre042693@lurza.secnetix.de> In-Reply-To: <20080317104749.GU10374@deviant.kiev.zoral.com.ua>
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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
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