netdev - Re: [PATCH iwl-net v3 0/3] Fix XDP loading on machines with many CPUs

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Message-ID: <aCcSRKNE4pwsTCro@localhost.localdomain>
Date: Fri, 16 May 2025 12:24:04 +0200
From: Michal Kubiak <michal.kubiak@...el.com>
To: Jesse Brandeburg <jbrandeburg@...udflare.com>
CC: <intel-wired-lan@...ts.osuosl.org>, <maciej.fijalkowski@...el.com>,
	<aleksander.lobakin@...el.com>, <przemyslaw.kitszel@...el.com>,
	<dawid.osuchowski@...ux.intel.com>, <jacob.e.keller@...el.com>,
	<netdev@...r.kernel.org>, <kernel-team@...udflare.com>
Subject: Re: [PATCH iwl-net v3 0/3] Fix XDP loading on machines with many CPUs

On Thu, May 15, 2025 at 03:43:24PM -0700, Jesse Brandeburg wrote:
> On 5/13/25 3:55 AM, Michal Kubiak wrote:
> > Hi,
> > 
> > Some of our customers have reported a crash problem when trying to load
> > the XDP program on machines with a large number of CPU cores. After
> > extensive debugging, it became clear that the root cause of the problem
> > lies in the Tx scheduler implementation, which does not seem to be able
> > to handle the creation of a large number of Tx queues (even though this
> > number does not exceed the number of available queues reported by the
> > FW).
> > This series addresses this problem.
> 
> This new v3 series passes all of our tests. Thanks Michal (and Intel) for
> the work on the patch, and thanks to the hardware team here at Cloudflare
> for testing!
> 
> For the series:
> 
> Tested-by: Jesse Brandeburg <jbrandeburg@...udflare.com>
> 
> 

Hi Jesse,

I am pleased to know that the issue has been resolved in your environment
as well!
Thank you all for your thorough testing. Please do not hesitate to let me
know if you have any further concerns.

Thanks,
Michal