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Date: Mon, 1 Jun 2026 10:20:07 +0200
From: Niklas Cassel <cassel@kernel.org>
To: Brian Norris <briannorris@chromium.org>
Cc: Radu Rendec <radu@rendec.net>, Thomas Gleixner <tglx@linutronix.de>,
	Manivannan Sadhasivam <mani@kernel.org>,
	Daniel Tsai <danielsftsai@google.com>,
	Marek =?utf-8?B?QmVow7pu?= <kabel@kernel.org>,
	Krishna Chaitanya Chundru <quic_krichai@quicinc.com>,
	Bjorn Helgaas <bhelgaas@google.com>, Rob Herring <robh@kernel.org>,
	Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= <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
Message-ID: <ah1At6tb_V2jxIfS@ryzen>
References: <20251128212055.1409093-1-rrendec@redhat.com>
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In-Reply-To: <ahowweKTZXteLgZS@google.com>

On Fri, May 29, 2026 at 05:35:13PM -0700, Brian Norris wrote:
> 
> This seems to tell me the irq_set_affinity()/migration process isn't
> really what's killing things, but something else.

Hello Brian,

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/

to see if it helps your problem?


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/

Which also sounds somewhat related.


Kind regards,
Niklas