From 1d2c3279311e4f03fcf164e1366f2fda9f4bfccf Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Tue, 2 Jul 2019 21:41:24 +0200 Subject: 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 Signed-off-by: Herbert Xu --- crypto/Kconfig | 44 -------------------------------------------- 1 file changed, 44 deletions(-) (limited to 'crypto/Kconfig') diff --git a/crypto/Kconfig b/crypto/Kconfig index 20af58068e6b..df6f0be66574 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 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 for more information. - config CRYPTO_AES_NI_INTEL tristate "AES cipher algorithms (AES-NI)" depends on X86 -- cgit