From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 77FEDC35250 for ; Sun, 9 Feb 2020 15:37:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5630220733 for ; Sun, 9 Feb 2020 15:37:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727803AbgBIPhs (ORCPT ); Sun, 9 Feb 2020 10:37:48 -0500 Received: from Galois.linutronix.de ([193.142.43.55]:42502 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727661AbgBIPhs (ORCPT ); Sun, 9 Feb 2020 10:37:48 -0500 Received: from p5b06da22.dip0.t-ipconnect.de ([91.6.218.34] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1j0oeO-00053e-Kc; Sun, 09 Feb 2020 16:37:36 +0100 Received: by nanos.tec.linutronix.de (Postfix, from userid 1000) id AAB4D100F5A; Sun, 9 Feb 2020 16:37:35 +0100 (CET) From: Thomas Gleixner To: sean.v.kelley@linux.intel.com, Kar Hin Ong , Bjorn Helgaas Cc: linux-rt-users , LKML , "x86\@kernel.org" , "linux-pci\@vger.kernel.org" , "H. Peter Anvin" , Dave Hansen , Julia Cartwright , Keng Soon Cheah , Gratian Crisan , Peter Zijlstra Subject: Re: RE: Re: "oneshot" interrupt causes another interrupt to be fired erroneously in Haswell system In-Reply-To: <87muaetj4p.fsf@nanos.tec.linutronix.de> References: <20191031230532.GA170712@google.com> <87a76oxqv1.fsf@nanos.tec.linutronix.de> <87muanwwhb.fsf@nanos.tec.linutronix.de> <8f1e5981b519acb5edf53b5392c81ef7cbf6a3eb.camel@linux.intel.com> <87muaetj4p.fsf@nanos.tec.linutronix.de> Date: Sun, 09 Feb 2020 16:37:35 +0100 Message-ID: <8736bjlqkg.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Sean, Thomas Gleixner writes: > Sean V Kelley writes: >> So I will ensure we actually create useful information pointing to this >> behavior either in kernel docs or online as in a white paper or both. > > Great. > >>> As we have already quirks in drivers/pci/quirks.c which handle the >>> same issue on older chipsets, we really should add one for these kind >>> of systems to avoid fiddling with the BIOS (which you can, but most >>> people cannot). > >> Agreed, and I will follow-up with Kar Hin Ong to get them added. > > Much appreciated. Any update on this? Thanks, tglx