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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2018-09-24 14:48:16 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-10-05 04:16:56 +0200 |
| commit | 944585a64f5e37d11ff274a905304b565a88e147 (patch) | |
| tree | 9802a55bd00eab52d59bfa7fe6b7b01a83446863 /crypto | |
| parent | crypto: cavium - remove redundant null pointer check before kfree (diff) | |
| download | linux-944585a64f5e37d11ff274a905304b565a88e147.tar.xz linux-944585a64f5e37d11ff274a905304b565a88e147.zip | |
crypto: x86/aes-ni - remove special handling of AES in PCBC mode
For historical reasons, the AES-NI based implementation of the PCBC
chaining mode uses a special FPU chaining mode wrapper template to
amortize the FPU start/stop overhead over multiple blocks.
When this FPU wrapper was introduced, it supported widely used
chaining modes such as XTS and CTR (as well as LRW), but currently,
PCBC is the only remaining user.
Since there are no known users of pcbc(aes) in the kernel, let's remove
this special driver, and rely on the generic pcbc driver to encapsulate
the AES-NI core cipher.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index 63ef279322d2..f7a235db56aa 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -1083,7 +1083,7 @@ config CRYPTO_AES_NI_INTEL In addition to AES cipher algorithm support, the acceleration for some popular block cipher mode is supported too, including - ECB, CBC, LRW, PCBC, XTS. The 64 bit version has additional + ECB, CBC, LRW, XTS. The 64 bit version has additional acceleration for CTR. config CRYPTO_AES_SPARC64 |