From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pasi =?iso-8859-1?Q?K=E4rkk=E4inen?= Subject: Re: Freeze with 2.6.32.19 and xen-4.0.1rc5, acpi problems Date: Wed, 25 Aug 2010 11:53:02 +0300 Message-ID: <20100825085302.GN2804@reaktio.net> References: <20100821140234.GX2804@reaktio.net> <4C704E75.2050200@rocnet.de> <4C722AC2.6080701@rocnet.de> <20100823110928.GE2804@reaktio.net> <20100823122918.GG2804@reaktio.net> <4C7379BB.3020007@rocnet.de> <20100824081607.GL2804@reaktio.net> <4C73879E.5020306@goop.org> <4C745433.5060303@rocnet.de> <4C74CE33.4010908@rocnet.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <4C74CE33.4010908@rocnet.de> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Claus Rosenberger Cc: Jeremy Fitzhardinge , xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Wed, Aug 25, 2010 at 10:02:59AM +0200, Claus Rosenberger wrote: > Am 25.08.2010 01:22, schrieb Claus Rosenberger: > > I checked out these options, following result > >>>> - acpi=ht noapic => worked > >>>> - noapic => didn't work, disk errors while booting, no functional system > >>>> - acpi=ht apic=debug => worked > >>>> > >>>> So it seems i definitly need the option acpi=ht or acpi=off or something like that. > >>>> > >>> Keir, Jeremy: Any idea why acpi=ht is needed to make Intel DQ45CB (Q45 chipset) work? > >>> > >>> Without "acpi=ht" the system freezes randomly without any log/debug/serialconsole output.. > >> At a random guess, there's something strange about the SCI interrupt. > >> When booting native, does "acpi" get irq 9 or something else? Is there > >> a BIOS setting relating to SCI or ACPI interrupts? > >> > > > > The kernel was running native without that problems, i attached dmesg. I > > didn't find any BIOS options like that. > > > > > a new test was done loading libata with option noacpi=1 > > - acpi=ht noapic => worked > - noapic => didn't work, disk errors while booting, no functional system > - acpi=ht apic=debug => worked > - xen without options but loading libata with option noacpi=1 => worked > So only setting libata.noacpi=1 fixes (or workarounds) the problem.. hmm. Or setting "acpi=ht" fixes it aswell. Hopefully someone has ideas about the cause.. -- Pasi