netdev - Re: [PATCH iwl-net 1/2] idpf: preserve IRQ affinity settings across resets

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Message-ID: <20241111185334.447a5253@kernel.org>
Date: Mon, 11 Nov 2024 18:53:34 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Ahmed Zaki <ahmed.zaki@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org, Sudheer
 Mogilappagari <sudheer.mogilappagari@...el.com>
Subject: Re: [PATCH iwl-net 1/2] idpf: preserve IRQ affinity settings across
 resets

On Fri,  8 Nov 2024 17:12:05 -0700 Ahmed Zaki wrote:
> From: Sudheer Mogilappagari <sudheer.mogilappagari@...el.com>
> 
> Currently the IRQ affinity settings are getting lost when interface
> goes through a soft reset (due to MTU configuration, changing number
> of queues etc). Use irq_set_affinity_notifier() callbacks to keep
> the IRQ affinity info in sync between driver and kernel.

Could you try doing this in the core? Store the mask in napi_struct 
if it has IRQ associated with it?

Barely any drivers get this right.