From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olaf Dabrunz Subject: Re: PCI, ACPI, IRQ, IOAPIC: reroute PCI interrupt to legacy boot interrupt equivalent Date: Thu, 15 Jan 2009 16:34:44 +0100 Message-ID: <20090115153444.GT25512@suse.de> References: <496B24E5.1070804@suse.de> <200901121151.53195.bjorn.helgaas@hp.com> <1231788349.4094.21.camel@perihelion.bos.jonmasters.org> <496C9807.1010109@suse.de> <20090113182259.GN25512@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mx2.suse.de ([195.135.220.15]:45259 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754545AbZAOPes (ORCPT ); Thu, 15 Jan 2009 10:34:48 -0500 Content-Disposition: inline In-Reply-To: <20090113182259.GN25512@suse.de> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Stefan Assmann , Jon Masters , Bjorn Helgaas , Len Brown , Ingo Molnar , Jesse Barnes On 13-Jan-09, Olaf Dabrunz wrote: > On 13-Jan-09, Stefan Assmann wrote: > > Hi Jon, > >=20 > > Jon Masters wrote: > > > On Mon, 2009-01-12 at 11:51 -0700, Bjorn Helgaas wrote: > > >> (I added Eric, Maciej, and Jon because they participated in > > >> previous discussion here: http://lkml.org/lkml/2008/6/2/269) > > >=20 > > > Thanks. You know what I'd really like even more than being on the= CC? > > > I'd *love* someone to post a link to documentation on how this ac= tually > > > is supposed to work. We had to guess last time because none of th= e > > > public documentation actually explains this. The guys at SuSE lik= ely > > > received some docs, but I'm not sure where from or the title ther= eof. > >=20 > > Actually, most of the Boot Interrupt patches resulted from reading = the > > intel specs and observing the behavior of failing machines. We're t= rying > > to wrap up all the information gathered in a paper, which is pretty= time > > consuming and a few steps away from being ready to publish. >=20 > We read the specs of the chips, analyzed code, put up hypotheses and > tested them. Then read the specs again, finding new hypotheses and > tested again. Also reading what you guys sent out to lkml and reading > through the public discussions for *BSD, Darwin, XEN etc. helped. > And some colleagues discussed hypotheses and solution attempts with u= s. >=20 > We summarized many of our end results in a presentation that we gave > internally, and I am working on making this available online (in > addition to the paper/slides that Stefan mentions below). The presentation can be found at http://www.suse.de/~odabrunz/Boot_Interrupts_and_IRQ_Threads.pdf Some parts of it have been corrected and updated. Please do not miss the "Details" slides after the License and the Disclaimer. The Details should answer many questions. Thanks, --=20 Olaf Dabrunz (od/odabrunz), SUSE Linux Products GmbH, N=C3=BCrnberg -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html