[PATCH v7 04/10] nvme-pci: use block layer helpers to constrain queue affinity

[Daniel Wagner]

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).

Signed-off-by: Daniel Wagner <wagi at kernel.org>
---
 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 a509dc1f1d1400bc0de6d2f9424c126d9b966751..5293d5a3e5ee19427bec834741258be134bdc2c9 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2589,6 +2589,7 @@ 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;

-- 
2.50.0