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Message-ID: <20230308183235.06f3e506@kernel.org>
Date: Wed, 8 Mar 2023 18:32:35 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Sai Krishna <saikrishnag@...vell.com>
Cc: <davem@...emloft.net>, <edumazet@...gle.com>, <pabeni@...hat.com>,
<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<sgoutham@...vell.com>, <sumang@...vell.com>,
<richardcochran@...il.com>
Subject: Re: [net PATCH v3] octeontx2-af: Unlock contexts in the queue
context cache in case of fault detection
On Tue, 7 Mar 2023 16:19:08 +0530 Sai Krishna wrote:
> From: Suman Ghosh <sumang@...vell.com>
>
> NDC caches contexts of frequently used queue's (Rx and Tx queues)
> contexts. Due to a HW errata when NDC detects fault/poision while
> accessing contexts it could go into an illegal state where a cache
> line could get locked forever. To makesure all cache lines in NDC
> are available for optimum performance upon fault/lockerror/posion
> errors scan through all cache lines in NDC and clear the lock bit.
Applied to net, thanks!
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