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Groups > linux.debian.kernel > #68815
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| From | Diederik de Haas <didi.debian@cknow.org> |
| Newsgroups | linux.debian.bugs.dist, linux.debian.kernel |
| Subject | Bug#976635: linux-image-arm64: Accelerated crypto modules missing from kernel config |
| Date | Fri, 11 Dec 2020 13:30:02 +0100 |
| Message-ID | <BkPIC-4F5-7@gated-at.bofh.it> (permalink) |
| References | <BiXKi-81X-15@gated-at.bofh.it> <BkOMx-45H-3@gated-at.bofh.it> <BkOWe-495-1@gated-at.bofh.it> <BiXKi-81X-15@gated-at.bofh.it> <BkOWe-495-1@gated-at.bofh.it> |
| X-Original-To | Ard Biesheuvel <ardb@kernel.org> |
| X-Mailbox-Line | From debian-bugs-dist-request@lists.debian.org Fri Dec 11 12:21:10 2020 |
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| Reply-To | Diederik de Haas <didi.debian@cknow.org>, 976635@bugs.debian.org |
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| Resent-Cc | Debian Kernel Team <debian-kernel@lists.debian.org> |
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| X-Original-Cc | 976635@bugs.debian.org |
| X-Original-Date | Fri, 11 Dec 2020 13:18:44 +0100 |
| X-Original-Message-ID | <1767146.tdWV9SEqCh@bagend> |
| X-Original-References | <160724367692.2975.12747615529380757853.reportbug@rpi4.home> <5663257.lOV4Wx5bFT@bagend> <CAMj1kXESHap63rCpyM68cV-Mk1medHYh=1U-iXQmMr+Jp=OzFQ@mail.gmail.com> <160724367692.2975.12747615529380757853.reportbug@rpi4.home> <CAMj1kXESHap63rCpyM68cV-Mk1medHYh=1U-iXQmMr+Jp=OzFQ@mail.gmail.com> |
| Xref | csiph.com linux.debian.bugs.dist:1037065 linux.debian.kernel:68815 |
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Hi Ard, On vrijdag 11 december 2020 12:26:43 CET Ard Biesheuvel wrote: > > Are you the same Ard Biesheuvel that 'Signed-off-by' the patch in: > > https://salsa.debian.org/kernel-team/linux/-/commit/ > > 8332600d1188a6d88881fc835dfcd392a20f6bfc > > Presumably, yes. But I cannot access that link. https://salsa.debian.org/kernel-team/linux/-/commit/8332600d1188a6d88881fc835dfcd392a20f6bfc Mail client wrapped the link previously. AFAIK it should be public for all. > > In that commit a bunch of crypto modules got enabled, but (explicitly) not > > CONFIG_CRYPTO_AES_ARM64_NEON_BLK. Do you recall why that happened? (I > > realize it's from 2014) > > There's an important difference between an 'oversight' and explicitly > > disabling a module and I'd like to have a clarification wrt that. > > This code was written before any hardware existed, and at the time, it > was not obvious whether it would perform well enough. > > Six years later, we know that this code works fine, and is faster (and > safer!) than any of the non-NEON alternatives. (On Raspberry Pi 3, the > non-NEON AES takes 31.5 cycles per byte, whereas the NEON code takes > around 22 cycles per byte) Thanks for the clarification :)
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Bug#976635: linux-image-arm64: Accelerated crypto modules missing from kernel config Ard Biesheuvel <ardb@kernel.org> - 2020-12-06 09:40 +0100
Bug#976635: linux-image-arm64: Accelerated crypto modules missing from kernel config Diederik de Haas <didi.debian@cknow.org> - 2020-12-11 12:30 +0100
Bug#976635: linux-image-arm64: Accelerated crypto modules missing from kernel config Ard Biesheuvel <ardb@kernel.org> - 2020-12-11 12:40 +0100
Bug#976635: linux-image-arm64: Accelerated crypto modules missing from kernel config Diederik de Haas <didi.debian@cknow.org> - 2020-12-11 13:30 +0100
Bug#976635: marked as done (linux-image-arm64: Accelerated crypto modules missing from kernel config) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2020-12-13 12:10 +0100
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