From: Brian Norris <briannorris@chromium.org>
To: Radu Rendec <radu@rendec.net>
Cc: "Thomas Gleixner" <tglx@linutronix.de>,
"Manivannan Sadhasivam" <mani@kernel.org>,
"Daniel Tsai" <danielsftsai@google.com>,
"Marek Behún" <kabel@kernel.org>,
"Krishna Chaitanya Chundru" <quic_krichai@quicinc.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Jingoo Han" <jingoohan1@gmail.com>,
"Brian Masney" <bmasney@redhat.com>,
"Eric Chanudet" <echanude@redhat.com>,
"Jared Kangas" <jkangas@redhat.com>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 3/3] PCI: dwc: Enable MSI affinity support
Date: Fri, 22 May 2026 17:07:24 -0700 [thread overview]
Message-ID: <ahDvvGew5UK3KSpi@google.com> (raw)
In-Reply-To: <ahC8Pyuatu_AvnZp@google.com>
(Updating Radu's email; dropping another bouncing email)
On Fri, May 22, 2026 at 01:27:43PM -0700, Brian Norris wrote:
> I'll see if I can learn anything more here on my own, but I figured I'd
> report it in case you have any thoughts or leads I should investigate.
In an hour or two of poking, all I've learned so far is that the problem
also seems to go away if I:
(a) add a few dump_stack() and other noisy logs to a few key places (for
now, __pci_write_msi_msg(), pci_power_up() failures, and
irq_chip_redirect_set_affinity() -- I think __pci_write_msi_msg()
was the most significant, possibly because it produced the most log
text) and
(b) leave a 115200 baud UART kernel console running.
(This is on a sample size of 20+ suspend cycles, whereas previous
bisection would fail 100%.)
It then reappers when I quiet the kernel logging a bit with `dmesg -n3`.
I think that simply tells me that there's some timing issue or race
condition involved.
Brian
next prev parent reply other threads:[~2026-05-23 0:07 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-28 21:20 [PATCH v3 0/3] Enable MSI affinity support for dwc PCI Radu Rendec
2025-11-28 21:20 ` [PATCH v3 1/3] genirq: Add interrupt redirection infrastructure Radu Rendec
2025-12-15 21:34 ` [tip: irq/msi] " tip-bot2 for Radu Rendec
2025-11-28 21:20 ` [PATCH v3 2/3] PCI: dwc: Code cleanup Radu Rendec
2025-12-15 21:34 ` [tip: irq/msi] " tip-bot2 for Radu Rendec
2025-11-28 21:20 ` [PATCH v3 3/3] PCI: dwc: Enable MSI affinity support Radu Rendec
2025-12-15 21:34 ` [tip: irq/msi] " tip-bot2 for Radu Rendec
2026-01-06 9:53 ` Jon Hunter
2026-01-06 15:07 ` Radu Rendec
2026-01-07 1:13 ` Radu Rendec
2026-01-20 18:01 ` [PATCH v3 3/3] " Jon Hunter
2026-01-20 22:30 ` Radu Rendec
2026-01-21 14:00 ` Jon Hunter
2026-01-22 23:31 ` Radu Rendec
2026-01-23 13:25 ` Jon Hunter
2026-01-26 7:59 ` Thomas Gleixner
2026-01-26 22:07 ` Jon Hunter
2026-01-26 22:26 ` Radu Rendec
2026-01-27 10:30 ` Thomas Gleixner
2026-01-27 13:34 ` Thomas Gleixner
2026-01-27 17:09 ` Jon Hunter
2026-01-27 21:30 ` [PATCH] genirq/redirect: Prevent writing MSI message on affinity change Thomas Gleixner
2026-01-29 22:51 ` [tip: irq/msi] " tip-bot2 for Thomas Gleixner
2026-03-26 3:48 ` [PATCH v3 3/3] PCI: dwc: Enable MSI affinity support Tsai Sung-Fu
2026-03-26 12:52 ` Thomas Gleixner
2026-05-22 20:27 ` Brian Norris
2026-05-23 0:07 ` Brian Norris [this message]
2026-05-25 16:48 ` Radu Rendec
2026-05-30 0:35 ` Brian Norris
2026-06-01 8:20 ` Niklas Cassel
2026-06-01 19:02 ` Brian Norris
2026-06-01 19:09 ` Brian Norris
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