Commit 1c43c0f1 authored by Roxana Nicolescu's avatar Roxana Nicolescu Committed by Herbert Xu
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crypto: x86/sha - load modules based on CPU features



x86 optimized crypto modules are built as modules rather than build-in and
they are not loaded when the crypto API is initialized, resulting in the
generic builtin module (sha1-generic) being used instead.

It was discovered when creating a sha1/sha256 checksum of a 2Gb file by
using kcapi-tools because it would take significantly longer than creating
a sha512 checksum of the same file. trace-cmd showed that for sha1/256 the
generic module was used, whereas for sha512 the optimized module was used
instead.

Add module aliases() for these x86 optimized crypto modules based on CPU
feature bits so udev gets a chance to load them later in the boot
process. This resulted in ~3x decrease in the real-time execution of
kcapi-dsg.

Fix is inspired from commit
aa031b8f ("crypto: x86/sha512 - load based on CPU features")
where a similar fix was done for sha512.

Cc: stable@vger.kernel.org # 5.15+
Suggested-by: default avatarDimitri John Ledkov <dimitri.ledkov@canonical.com>
Suggested-by: default avatarJulian Andres Klode <julian.klode@canonical.com>
Signed-off-by: default avatarRoxana Nicolescu <roxana.nicolescu@canonical.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent ce2cb2e1
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