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=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 CDE5DC433DF for ; Fri, 24 Jul 2020 14:35:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A4092206D8 for ; Fri, 24 Jul 2020 14:35:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595601352; bh=L7/MwNAWCUFGl5PPjS4I/NXskBIhuh/a8szTHPAtB2o=; h=Date:From:To:Cc:Subject:In-Reply-To:List-ID:From; b=B7pS4LzXnYNaKe1I+PPK0GTrqk1OSDci78gyxhhUGAt2DY9+sPTrcojHxK8cXxWf3 fIg1420F/LNBCIyNXYclFS9joARDrpdJIjyuYd3Wpfp4g81e6zDGjepDl3qoZ52jDD HRjFfewQiLRauG85MrV5LJsQbr+yWOT7ykIiYStU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726591AbgGXOfv (ORCPT ); Fri, 24 Jul 2020 10:35:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:53344 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726366AbgGXOfv (ORCPT ); Fri, 24 Jul 2020 10:35:51 -0400 Received: from localhost (mobile-166-175-191-139.mycingular.net [166.175.191.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0B3082065C; Fri, 24 Jul 2020 14:35:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595601351; bh=L7/MwNAWCUFGl5PPjS4I/NXskBIhuh/a8szTHPAtB2o=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=evvrI1BGgtE+SPkmfhvSpzy6GLmEfaY0aSMDB9mfPSAxpEbjPPEZaef/LG/UBN+r1 8qLDaag77ZA8ppddFZbsFWU7TXPA2EdzAelblCXO2loDBPVbtbbAnfR+RcaRNO4wO2 xle9Sz+cT1LnAaOZqG37Pb02PUlPprfbBv/AHLf4= Date: Fri, 24 Jul 2020 09:35:49 -0500 From: Bjorn Helgaas To: Mika Westerberg Cc: Karol Herbst , Patrick Volkerding , Lyude Paul , Linux PCI , Ben Skeggs , Bjorn Helgaas , nouveau , dri-devel , LKML , Kai-Heng Feng , Sasha Levin Subject: Re: nouveau regression with 5.7 caused by "PCI/PM: Assume ports without DLL Link Active train links in 100 ms" Message-ID: <20200724143549.GA1516749@bjorn-Precision-5520> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200724095751.GU1375436@lahna.fi.intel.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Fri, Jul 24, 2020 at 12:57:51PM +0300, Mika Westerberg wrote: > On Thu, Jul 23, 2020 at 10:30:58PM +0200, Karol Herbst wrote: > > On Wed, Jul 22, 2020 at 11:25 AM Mika Westerberg > > wrote: > > > > > > On Tue, Jul 21, 2020 at 01:37:12PM -0500, Patrick Volkerding wrote: > > > > On 7/21/20 10:27 AM, Mika Westerberg wrote: > > > > > On Tue, Jul 21, 2020 at 11:01:55AM -0400, Lyude Paul wrote: > > > > >> Sure thing. Also, feel free to let me know if you'd like access to one of the > > > > >> systems we saw breaking with this patch - I'm fairly sure I've got one of them > > > > >> locally at my apartment and don't mind setting up AMT/KVM/SSH > > > > > Probably no need for remote access (thanks for the offer, though). I > > > > > attached a test patch to the bug report: > > > > > > > > > > https://bugzilla.kernel.org/show_bug.cgi?id=208597 > > > > > > > > > > that tries to work it around (based on the ->pm_cap == 0). I wonder if > > > > > anyone would have time to try it out. > > > > > > > > > > > > Hi Mika, > > > > > > > > I can confirm that this patch applied to 5.4.52 fixes the issue with > > > > hybrid graphics on the Thinkpad X1 Extreme gen2. > > > > > > Great, thanks for testing! > > > > yeah, works on the P1G2 as well. > > Thanks for testing! > > Since we have the revert queued for this release cycle, I think I will > send an updated version of "PCI/PM: Assume ports without DLL Link Active > train links in 100 ms" after v5.9-rc1 is released that has this > workaround in place. > > (I'm continuing my vacation so will be offline next week). Sounds fine, sorry for interrupting your vacation!