On Tue, Jul 06 2021 at 07:42, Christoph Hellwig wrote: > On Fri, Jul 02, 2021 at 11:05:54PM +0800, Ming Lei wrote: >> blk-mq needs to know if the device uses managed irq, so add one field >> to virtio_device for recording if device uses managed irq. >> >> If the driver use managed irq, this flag has to be set so it can be >> passed to blk-mq. > > I don't think all this boilerplate code make a whole lot of sense. > I think we need to record this information deep down in the irq code by > setting a flag in struct device only if pci_alloc_irq_vectors_affinity > atually managed to allocate multiple vectors and the PCI_IRQ_AFFINITY > flag was set. Then blk-mq can look at that flag, and also check that > more than one queue is in used and work based on that. Ack.
