netdev - Re: [net-next] octeontx2-pf: QOS: Perform cache sync on send queue teardown

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Message-ID: <20250520170615.GO365796@horms.kernel.org>
Date: Tue, 20 May 2025 18:06:15 +0100
From: Simon Horman <horms@...nel.org>
To: Hariprasad Kelam <hkelam@...vell.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Sunil Goutham <sgoutham@...vell.com>,
	Geetha sowjanya <gakula@...vell.com>,
	Subbaraya Sundeep <sbhatta@...vell.com>,
	Bharat Bhushan <bbhushan2@...vell.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Subject: Re: [net-next] octeontx2-pf: QOS: Perform cache sync on send queue
 teardown

On Tue, May 20, 2025 at 02:52:48PM +0530, Hariprasad Kelam wrote:
> QOS is designed to create a new send queue whenever  a class
> is created, ensuring proper shaping and scheduling. However,
> when multiple send queues are created and deleted in a loop,
> SMMU errors are observed.
> 
> This patch addresses the issue by performing an data cache sync
> during the teardown of QOS send queues.
> 
> Signed-off-by: Hariprasad Kelam <hkelam@...vell.com>

Hi Hariprasad,

This feels like a fix and if so:
* Warrants a Fixes tag
* Should also be targeted at net rather than net-next if it fixes a problem
  present in net