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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2019-07-02 21:41:24 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-07-26 14:56:02 +1000 |
| commit | bfef5b97787c4d41b2128863dc301a2d3e92525b (patch) | |
| tree | 46ed83e4fb039df890ab478b63aed0abadcfd53c /crypto/Kconfig | |
| parent | 01490fc88e550935c57c668ee686dc02aca6d7d7 (diff) | |
| download | linux-crypto-bfef5b97787c4d41b2128863dc301a2d3e92525b.tar.gz linux-crypto-bfef5b97787c4d41b2128863dc301a2d3e92525b.zip | |
crypto: x86/aes - drop scalar assembler implementations
The AES assembler code for x86 isn't actually faster than code
generated by the compiler from aes_generic.c, and considering
the disproportionate maintenance burden of assembler code on
x86, it is better just to drop it entirely. Modern x86 systems
will use AES-NI anyway, and given that the modules being removed
have a dependency on aes_generic already, we can remove them
without running the risk of regressions.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
| -rw-r--r-- | crypto/Kconfig | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index 20af5806..df6f0be6 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -1108,50 +1108,6 @@ config CRYPTO_AES_TI block. Interrupts are also disabled to avoid races where cachelines are evicted when the CPU is interrupted to do something else. -config CRYPTO_AES_586 - tristate "AES cipher algorithms (i586)" - depends on (X86 || UML_X86) && !64BIT - select CRYPTO_ALGAPI - select CRYPTO_AES - help - AES cipher algorithms (FIPS-197). AES uses the Rijndael - algorithm. - - Rijndael appears to be consistently a very good performer in - both hardware and software across a wide range of computing - environments regardless of its use in feedback or non-feedback - modes. Its key setup time is excellent, and its key agility is - good. Rijndael's very low memory requirements make it very well - suited for restricted-space environments, in which it also - demonstrates excellent performance. Rijndael's operations are - among the easiest to defend against power and timing attacks. - - The AES specifies three key sizes: 128, 192 and 256 bits - - See <http://csrc.nist.gov/encryption/aes/> for more information. - -config CRYPTO_AES_X86_64 - tristate "AES cipher algorithms (x86_64)" - depends on (X86 || UML_X86) && 64BIT - select CRYPTO_ALGAPI - select CRYPTO_AES - help - AES cipher algorithms (FIPS-197). AES uses the Rijndael - algorithm. - - Rijndael appears to be consistently a very good performer in - both hardware and software across a wide range of computing - environments regardless of its use in feedback or non-feedback - modes. Its key setup time is excellent, and its key agility is - good. Rijndael's very low memory requirements make it very well - suited for restricted-space environments, in which it also - demonstrates excellent performance. Rijndael's operations are - among the easiest to defend against power and timing attacks. - - The AES specifies three key sizes: 128, 192 and 256 bits - - See <http://csrc.nist.gov/encryption/aes/> for more information. - config CRYPTO_AES_NI_INTEL tristate "AES cipher algorithms (AES-NI)" depends on X86 |