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authorEric Biggers <ebiggers@google.com>2018-11-17 02:26:23 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2018-11-20 07:26:56 +0100
commitbe2830b15b60011845ad701076511e8b93b2fd76 (patch)
tree67c73b7ecd50df0b5a33fcb5d62fd899c47e20c0 /drivers/firmware
parentcrypto: chacha - add XChaCha12 support (diff)
downloadlinux-be2830b15b60011845ad701076511e8b93b2fd76.tar.xz
linux-be2830b15b60011845ad701076511e8b93b2fd76.zip
crypto: arm/chacha20 - limit the preemption-disabled section
To improve responsivesess, disable preemption for each step of the walk (which is at most PAGE_SIZE) rather than for the entire encryption/decryption operation. Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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