From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 59CF9313294; Fri, 5 Sep 2025 15:00:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757084410; cv=none; b=EOgl94Ui6WcZmiK3sTlcvWYftSTKFJE+5Bz8zzdhuFdzCn8IXq8opt1N8rEyTL1zYwn07LKzNxJX5784Bvf/5UuwBZ3/L07lP0Qgn3Q6drJhTQ0aUlrLM5S+/9wSwiX7Vw1s3ZVMLuxotsPbhyr9uBGhapQjHH/BUWJqP5RGwrI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757084410; c=relaxed/simple; bh=l0TS7kNWsBFisp5wVR6xD5H+1nN29rebF/xTWKzZjX4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=oJqv9+mmhXKGBGqOT7dXub/NyQFfYbNqhva5jKj0T30LnnwSOENS0nmRX2P3rP5eTX8O7yKusWL9NgDpCM8Hs30BK0SCqK55lpa70hmplMinMRVoie21lnx28zcrM9BA9HE9pIByjxPXBs3ErJ5CWZ6ucJ+un+VWLOS569zGAzA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lkgBXAXo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lkgBXAXo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5CD56C4CEF4; Fri, 5 Sep 2025 15:00:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757084409; bh=l0TS7kNWsBFisp5wVR6xD5H+1nN29rebF/xTWKzZjX4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=lkgBXAXocImjt2eAn/AdIFpsG0uxz1yt+IOnL9oyY772BW7AHt92SMDrVHMVSJ4ZS 7WQ0X514Pqa510sT9ogC5CURj2FpMhoYL6DY7hLT0c08LMm5oRKRt6LmNcPagcyeuX dNrTUYCsorwjNGfx0zKnZyLJft9d0BqcqGfsVts++oB4OuE23Y4p0Czidbc2Xbuq8g YhsaIfbNsb8k+z+WfpYrX+/g4XsjcBHhtXUUDI3klMSZ3FesNnvb/GrfuysVMfBA68 cSvRo0y6DXMlI19yauHccXucwSGqcyOSz5KfmDAVYxquFy3wb+1EqNi7Ldtl5ONNgK 1t4YkfcMT97sg== From: Daniel Wagner Date: Fri, 05 Sep 2025 16:59:52 +0200 Subject: [PATCH v8 06/12] nvme-pci: use block layer helpers to constrain queue affinity Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250905-isolcpus-io-queues-v8-6-885984c5daca@kernel.org> References: <20250905-isolcpus-io-queues-v8-0-885984c5daca@kernel.org> In-Reply-To: <20250905-isolcpus-io-queues-v8-0-885984c5daca@kernel.org> To: Jens Axboe , Keith Busch , Christoph Hellwig , Sagi Grimberg , "Michael S. Tsirkin" Cc: Aaron Tomlin , "Martin K. Petersen" , Thomas Gleixner , Costa Shulyupin , Juri Lelli , Valentin Schneider , Waiman Long , Ming Lei , Frederic Weisbecker , Mel Gorman , Hannes Reinecke , Mathieu Desnoyers , Aaron Tomlin , linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, megaraidlinux.pdl@broadcom.com, linux-scsi@vger.kernel.org, storagedev@microchip.com, virtualization@lists.linux.dev, GR-QLogic-Storage-Upstream@marvell.com, Daniel Wagner X-Mailer: b4 0.14.2 Ensure that IRQ affinity setup also respects the queue-to-CPU mapping constraints provided by the block layer. This allows the NVMe driver to avoid assigning interrupts to CPUs that the block layer has excluded (e.g., isolated CPUs). Reviewed-by: Hannes Reinecke Signed-off-by: Daniel Wagner --- drivers/nvme/host/pci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 2c6d9506b172509fb35716eba456c375f52f5b86..1d9c13aeddb12fa39eef68b7288d1f13eb98a0d7 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2604,6 +2604,7 @@ static int nvme_setup_irqs(struct nvme_dev *dev, unsigned int nr_io_queues) .pre_vectors = 1, .calc_sets = nvme_calc_irq_sets, .priv = dev, + .mask = blk_mq_possible_queue_affinity(), }; unsigned int irq_queues, poll_queues; unsigned int flags = PCI_IRQ_ALL_TYPES | PCI_IRQ_AFFINITY; -- 2.51.0