On Mon, 6 Jul 2020 13:42:30 -0700, James Smart wrote:
> With certain platforms its possible pci_alloc_irq_vectors() may
> affinitize irq vectors to multiple (all?) cpus. The driver is currently
> assuming exclusivity and vectors being doled out to different cpus and
> is assigning primary ownership of each vector to the first cpu in the
> mask. The code doesn't bother to check if the cpu already owns a vector
> and will unconditionally overwrite the cpu to vector mapping. This causes
> the relationships between eq's and cq's to get confused and gets worse
> when cpus start to offline. The net results are interrupts are skipped
> resulting in mailbox timeouts and there are oops's in cpu offling flows.
>
> [...]
Applied to 5.9/scsi-queue, thanks!
[1/1] scsi: lpfc: Fix interrupt assignments when multiple vectors are supported on same CPU
https://git.kernel.org/mkp/scsi/c/17105d959b26
--
Martin K. Petersen Oracle Linux Engineering
