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Mon, 01 Jun 2026 12:09:36 -0700 (PDT) Received: from localhost ([2a00:79e0:2e7c:8:d53d:3040:2c80:7717]) by smtp.gmail.com with UTF8SMTPSA id 5a478bee46e88-304ed5a0b7dsm9917641eec.22.2026.06.01.12.09.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 01 Jun 2026 12:09:35 -0700 (PDT) Date: Mon, 1 Jun 2026 12:09:32 -0700 From: Brian Norris To: Niklas Cassel Cc: Radu Rendec , Thomas Gleixner , Manivannan Sadhasivam , Daniel Tsai , Marek =?iso-8859-1?Q?Beh=FAn?= , Krishna Chaitanya Chundru , Bjorn Helgaas , Rob Herring , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Lorenzo Pieralisi , Jingoo Han , Brian Masney , Eric Chanudet , Jared Kangas , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Andersson , Jon Hunter Subject: Re: [PATCH v3 3/3] PCI: dwc: Enable MSI affinity support Message-ID: References: <20251128212055.1409093-1-rrendec@redhat.com> <20251128212055.1409093-4-rrendec@redhat.com> <73f04f467e65b13fd455a3650dc2bd106af1e5a6.camel@rendec.net> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Mon, Jun 01, 2026 at 12:02:55PM -0700, Brian Norris wrote: > > Perhaps a long-shot, but have you tried to apply: > > https://lore.kernel.org/linux-pci/20260519-l1ss-fix-v2-0-b2c3a4bdeb15@oss.qualcomm.com/ > > For the record, that's: > > [PATCH v2 0/4] PCI: Introduce pci_suspend_retains_context() API > > > to see if it helps your problem? > > It also seemed like a long-shot, but I tried it and it does resolve my > problems. Maybe I can provide a Tested-by there. > > > https://lore.kernel.org/linux-pci/r247uuc7ilkhn65vcbsaoxhgypif37lj3r3mvb7ooqqdg55vnm@vx3ip6klg6ha/ > > also seems to mention a recent PSCI fix: > > https://lore.kernel.org/all/20251231162126.7728-1-manivannan.sadhasivam@oss.qualcomm.com/ > > That's: > [PATCH] firmware: psci: Set pm_set_resume/suspend_via_firmware() for SYSTEM_SUSPEND > > > Which also sounds somewhat related. > > Yes, that looks somewhat related. I tried it, and it seems to resolve my > issue as well. Oh, nice, I see that this was already applied to pci/next for v7.2. I had already tested pci/next, but as luck would have it, I had pulled it a day before Bjorn Helgaas applied the series. I can't imagine this is a linux-stable candidate though, as it appears to be a bit more of a "new feature" thing. I'm still stuck wondering how this showed up as a regression for me. Brian