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[108.49.102.102]) by smtp.gmail.com with ESMTPSA id x12sm510481qta.67.2020.07.21.11.24.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Jul 2020 11:24:20 -0700 (PDT) Message-ID: Subject: Re: nouveau regression with 5.7 caused by "PCI/PM: Assume ports without DLL Link Active train links in 100 ms" From: Lyude Paul To: Mika Westerberg Cc: Karol Herbst , Bjorn Helgaas , Linux PCI , Ben Skeggs , Bjorn Helgaas , nouveau , dri-devel , Patrick Volkerding , LKML , Kai-Heng Feng , Sasha Levin Date: Tue, 21 Jul 2020 14:24:19 -0400 In-Reply-To: References: <20200716235440.GA675421@bjorn-Precision-5520> <20200721122247.GI5180@lahna.fi.intel.com> <20200721152737.GS5180@lahna.fi.intel.com> Organization: Red Hat Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.3 (3.36.3-1.fc32) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2020-07-21 at 12:00 -0400, Lyude Paul wrote: > On Tue, 2020-07-21 at 18:27 +0300, 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. > > Will give it a shot today and let you know the result Ahh-actually, I thought the laptop I had locally could reproduce this bug but that doesn't appear to be the case whoops. Karol Herbst still has access to a machine that can test this though, so they'll likely get to trying the patch today or tommorrow > -- Cheers, Lyude Paul (she/her) Software Engineer at Red Hat