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authorArd Biesheuvel <ardb@kernel.org>2020-12-31 17:41:55 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2021-01-08 15:39:47 +1100
commit2481104fe98d5b016fdd95d649b1235f21e491ba (patch)
tree80bf424a7f5f59815c5959369f0c6d69a9795fcc /crypto
parent86ad60a65f29dd862a11c22bb4b5be28d6c5cef1 (diff)
downloadlinux-2481104fe98d5b016fdd95d649b1235f21e491ba.tar.bz2
crypto: x86/aes-ni-xts - rewrite and drop indirections via glue helper
The AES-NI driver implements XTS via the glue helper, which consumes a struct with sets of function pointers which are invoked on chunks of input data of the appropriate size, as annotated in the struct. Let's get rid of this indirection, so that we can perform direct calls to the assembler helpers. Instead, let's adopt the arm64 strategy, i.e., provide a helper which can consume inputs of any size, provided that the penultimate, full block is passed via the last call if ciphertext stealing needs to be applied. This also allows us to enable the XTS mode for i386. Tested-by: Eric Biggers <ebiggers@google.com> # x86_64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reported-by: kernel test robot <lkp@intel.com> Reported-by: kernel test robot <lkp@intel.com> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/Kconfig1
1 files changed, 0 insertions, 1 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index a367fcfeb5d4..c48ca26e2169 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1133,7 +1133,6 @@ config CRYPTO_AES_NI_INTEL
select CRYPTO_LIB_AES
select CRYPTO_ALGAPI
select CRYPTO_SKCIPHER
- select CRYPTO_GLUE_HELPER_X86 if 64BIT
select CRYPTO_SIMD
help
Use Intel AES-NI instructions for AES algorithm.