Re: [RFC PATCH] pci: add pci_irq_get_affinity_vector()
From: Christoph Hellwig <hch@lst.de>
Date: 2016-11-08 14:56:57
Also in:
linux-pci, lkml
On Tue, Nov 08, 2016 at 08:47:21AM +0100, Hannes Reinecke wrote:
Add a reverse-mapping function to return the interrupt vector for any CPU if interrupt affinity is enabled.
What's the use case of it? Also as-is this won't work due to the non-affinity vectors that have the affinity set to all cpus. It will get even worse if we have to support things like virtio_net that have multiple interrupts per CPU due to the send and receive virtqueues.