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 likely to care about these specifics. Patch #1 addresses an issue in the skcipher walker which doesn't handle zero sized AEAD inputs entirely consistently, which is uncovered by the change in patch #7. Patches #2 and #3 add some sanity checks to the public AEAD and skcipher APIs to limit their availibility to either task or softirq context (which is the only way in which they are currently being used). Adding this restriction permits the arm64 crypto code to get rid of all scalar fallbacks, given that on this architecture, softirqs are 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 the remaining 4 patches. 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/20210302090118.30666-1-ardb@xxxxxxxxxx/ Ard Biesheuvel (7): crypto: skcipher - handle zero sized inputs correctly crypto: aead - disallow en/decrypt for non-task or non-softirq context crypto: skcipher - disallow en/decrypt for non-task or non-softirq context 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 arch/arm64/crypto/Kconfig | 6 - arch/arm64/crypto/aes-ce-ccm-core.S | 1 + arch/arm64/crypto/aes-ce-ccm-glue.c | 183 +++++------------ arch/arm64/crypto/aes-glue.c | 102 ++-------- arch/arm64/crypto/aes-neonbs-glue.c | 122 +----------- arch/arm64/crypto/ghash-ce-glue.c | 209 +++++--------------- crypto/aead.c | 12 +- crypto/skcipher.c | 16 +- 8 files changed, 150 insertions(+), 501 deletions(-) -- 2.20.1
