This is a follow-up to [0], but given that the arm64 architectural
pieces have been merged for arm64, the only remaining changes are crypto
specific. Therefore, the audience has been reduced to those people who
are somewhat more likely to care about these specifics.
The AEAD and skcipher APIs may only be called from task or softirq
context. This permits the arm64 AEAD and skcipher code to get rid of all
scalar fallbacks, given that on this architecture, softirqs are now no
longer served while the SIMD unit is being used in kernel mode, which
means that the scalar fallbacks are never needed. These are removed in
this series.
Changes since v4:
- drop skcipher_walk layer change to deal with zero sized walks
- drop aead/skcipher layer sanity checks on invocations from hardirq
context
- add patch to clean up CCM a bit more after removing the SIMD code path
Changes since v3:
- clarify the nature of the issue addressed by patch #1, and apply the
same fix to the skcipher walker
- update patches #2 and #3 so that the failures can be observed by the
crypto stats code
[0] https://lore.kernel.org/linux-arm-kernel/[email protected]/
Ard Biesheuvel (5):
crypto: arm64/gcm-aes-ce - remove non-SIMD fallback path
crypto: arm64/aes-neonbs - stop using SIMD helper for skciphers
crypto: arm64/aes-ce - stop using SIMD helper for skciphers
crypto: arm64/aes-ccm - remove non-SIMD fallback path
crypto: arm64/aes-ccm - avoid by-ref argument for ce_aes_ccm_auth_data
arch/arm64/crypto/Kconfig | 6 -
arch/arm64/crypto/aes-ce-ccm-core.S | 24 +--
arch/arm64/crypto/aes-ce-ccm-glue.c | 194 ++++++------------
arch/arm64/crypto/aes-glue.c | 102 ++--------
arch/arm64/crypto/aes-neonbs-glue.c | 122 +-----------
arch/arm64/crypto/ghash-ce-glue.c | 209 +++++---------------
6 files changed, 141 insertions(+), 516 deletions(-)
--
2.20.1