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From: "Daniel P. Berrangé" <berrange@redhat.com>
To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: qemu-devel@nongnu.org, Hanna Reitz <hreitz@redhat.com>,
	qemu-block@nongnu.org, Kevin Wolf <kwolf@redhat.com>
Subject: Re: [PATCH 0/2] block/crypto: do not require number of threads upfront
Date: Mon, 3 Jun 2024 13:37:11 +0100	[thread overview]
Message-ID: <Zl24945RaSWEcvFr@redhat.com> (raw)
In-Reply-To: <20240527155851.892885-1-stefanha@redhat.com>

On Mon, May 27, 2024 at 11:58:49AM -0400, Stefan Hajnoczi wrote:
> The block layer does not know how many threads will perform I/O. It is possible
> to exceed the number of threads that is given to qcrypto_block_open() and this
> can trigger an assertion failure in qcrypto_block_pop_cipher().
> 
> This patch series removes the n_threads argument and instead handles an
> arbitrary number of threads.
> ---
> Is it secure to store the key in QCryptoBlock? In this series I assumed the
> answer is yes since the QCryptoBlock's cipher state is equally sensitive, but
> I'm not familiar with this code or a crypto expert.

Yes, its a case of ....  this is undesirable, but we do it everywhere
already, so this isn't making it any worse.

For both patches

Acked-by: Daniel P. Berrangé <berrange@redhat.com>



With regards,
Daniel
-- 
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  parent reply	other threads:[~2024-06-03 12:37 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-27 15:58 [PATCH 0/2] block/crypto: do not require number of threads upfront Stefan Hajnoczi
2024-05-27 15:58 ` [PATCH 1/2] block/crypto: create ciphers on demand Stefan Hajnoczi
2024-05-27 15:58 ` [PATCH 2/2] crypto/block: drop qcrypto_block_open() n_threads argument Stefan Hajnoczi
2024-05-29 16:50 ` [PATCH 0/2] block/crypto: do not require number of threads upfront Kevin Wolf
2024-05-29 18:10   ` Stefan Hajnoczi
2024-06-03 12:37 ` Daniel P. Berrangé [this message]
2024-06-03 16:04 ` Kevin Wolf

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