From: Herbert Xu <herbert@gondor.apana.org.au>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Eric Biggers <ebiggers@kernel.org>, Will Deacon <will@kernel.org>,
Android Kernel Team <kernel-team@android.com>
Subject: Re: [PATCH v4 2/7] crypto: aead - disallow en/decrypt for non-task or non-softirq context
Date: Wed, 19 May 2021 19:51:46 +0800 [thread overview]
Message-ID: <20210519115146.bmrlfrchmz5tt2e2@gondor.apana.org.au> (raw)
In-Reply-To: <CAMj1kXGsxFzx8XTwhBRma_eSmnAHDZHox9X+SYDn0JYfPBVbYg@mail.gmail.com>
On Wed, May 19, 2021 at 01:36:37PM +0200, Ard Biesheuvel wrote:
>
> So if we do need to check this, we should check it here. If we don't,
> then we can drop these patches.
Historically other things would break in nasty ways if you tried
to do crypto in hard IRQ contexts, e.g., overwritten kmap slots
back when we had individual slots for each context, but I don't
think we've ever found anyone crazy enough to do that to warrant
a run-time check.
I'd just leave it out for now.
Thanks,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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next prev parent reply other threads:[~2021-05-19 11:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-19 11:22 [PATCH v4 0/7] running kernel mode SIMD with softirqs disabled Ard Biesheuvel
2021-05-19 11:22 ` [PATCH v4 1/7] crypto: skcipher - handle zero sized inputs correctly Ard Biesheuvel
2021-05-19 11:22 ` [PATCH v4 2/7] crypto: aead - disallow en/decrypt for non-task or non-softirq context Ard Biesheuvel
2021-05-19 11:29 ` Herbert Xu
2021-05-19 11:36 ` Ard Biesheuvel
2021-05-19 11:51 ` Herbert Xu [this message]
2021-05-21 7:30 ` Ard Biesheuvel
2021-05-19 11:22 ` [PATCH v4 3/7] crypto: skcipher " Ard Biesheuvel
2021-05-19 11:22 ` [PATCH v4 4/7] crypto: arm64/gcm-aes-ce - remove non-SIMD fallback path Ard Biesheuvel
2021-05-19 11:22 ` [PATCH v4 5/7] crypto: arm64/aes-neonbs - stop using SIMD helper for skciphers Ard Biesheuvel
2021-05-19 11:22 ` [PATCH v4 6/7] crypto: arm64/aes-ce " Ard Biesheuvel
2021-05-19 11:22 ` [PATCH v4 7/7] crypto: arm64/aes-ccm - remove non-SIMD fallback path Ard Biesheuvel
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