Re: [RFC PATCH v2 1/1] scsi: mpi3mr: Introduce smp_affinity_enable module parameter

From: John Garry
Date: Tue Jun 17 2025 - 03:19:54 EST


On 01/06/2025 02:40, Aaron Tomlin wrote:
This patch introduces a new module parameter namely
"smp_affinity_enable", to govern the application of system-wide IRQ
affinity (with kernel boot-time parameter "irqaffinity") for MSI-X
interrupts. By default, the default IRQ affinity mask will not be
respected. Set smp_affinity_enable to 0 disables this behaviour.
Consequently, preventing the auto-assignment of MSI-X IRQs.

You have given no substantial motivation for this change.

On the cover letter you have, "I noticed that the Linux MegaRAID driver for SAS based RAID controllers has the same aforementioned module parameter ..." and " I suspect it would be useful ..."