From: Holger Dengler <dengler@linux.ibm.com>
To: Harald Freudenberger <freude@linux.ibm.com>
Cc: fcallies@linux.ibm.com, ifranzki@linux.ibm.com,
linux-s390@vger.kernel.org, Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
linux-crypto@vger.kernel.org
Subject: Re: [PATCH v3 3/6] s390/crypto: Fix use of mutex in atomic context in PAES
Date: Tue, 18 Aug 2026 09:49:37 +0200 [thread overview]
Message-ID: <8fd6af9c-6e4e-4b13-8499-786576208df2@linux.ibm.com> (raw)
In-Reply-To: <20260817141654.77940-4-freude@linux.ibm.com>
On 8/17/26 16:16, Harald Freudenberger wrote:
> The PAES CTR implementation used a mutex to lock one page of exclusive
> memory for fast CTR processing. Unfortunately a mutex is not save to
> use in atomic or interrupt context. So use a binary semaphore instead
> which is save to use in such environments.
>
> Fixes: 6cd87cb5ef6c ("s390/crypto: Rework protected key AES for true asynch support")
> Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
> Cc: stable@vger.kernel.org # 6.16+
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
--
Mit freundlichen Grüßen / Kind regards
Holger Dengler
next prev parent reply other threads:[~2026-08-18 7:49 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-17 14:16 [PATCH v3 0/6] Fixes and rework for paes_s390 Harald Freudenberger
2026-08-17 14:16 ` [PATCH v3 1/6] s390/crypto: Fix return code handling at skcipher_walk_done in PAES algorithms Harald Freudenberger
2026-08-17 14:22 ` sashiko-bot
2026-08-18 7:11 ` Holger Dengler
2026-08-17 14:16 ` [PATCH v3 2/6] s390/crypto: Fix missing scrub of temp buffers with PAES algorithm Harald Freudenberger
2026-08-17 14:23 ` sashiko-bot
2026-08-18 7:32 ` Holger Dengler
2026-08-17 14:16 ` [PATCH v3 3/6] s390/crypto: Fix use of mutex in atomic context in PAES Harald Freudenberger
2026-08-17 14:26 ` sashiko-bot
2026-08-18 7:49 ` Holger Dengler [this message]
2026-08-17 14:16 ` [PATCH v3 4/6] s390/crypto: Fix missing cra_flags in paes_s390 Harald Freudenberger
2026-08-17 14:22 ` sashiko-bot
2026-08-18 7:54 ` Holger Dengler
2026-08-17 14:16 ` [PATCH v3 5/6] s390/crypto: Fix handling of EBUSY in PAES when req is pushed to crypto engine Harald Freudenberger
2026-08-17 14:27 ` sashiko-bot
2026-08-17 14:16 ` [PATCH v3 6/6] s390/crypto: Fix handling of EBUSY in PHMAC " Harald Freudenberger
2026-08-17 14:35 ` sashiko-bot
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