Eric Biggers 91a2abb78f crypto: arm64/speck - add NEON-accelerated implementation of Speck-XTS ... Add a NEON-accelerated implementation of Speck128-XTS and Speck64-XTS for ARM64. This is ported from the 32-bit version. It may be useful on devices with 64-bit ARM CPUs that don't have the Cryptography Extensions, so cannot do AES efficiently -- e.g. the Cortex-A53 processor on the Raspberry Pi 3. It generally works the same way as the 32-bit version, but there are some slight differences due to the different instructions, registers, and syntax available in ARM64 vs. in ARM32. For example, in the 64-bit version there are enough registers to hold the XTS tweaks for each 128-byte chunk, so they don't need to be saved on the stack. Benchmarks on a Raspberry Pi 3 running a 64-bit kernel: Algorithm Encryption Decryption --------- ---------- ---------- Speck64/128-XTS (NEON) 92.2 MB/s 92.2 MB/s Speck128/256-XTS (NEON) 75.0 MB/s 75.0 MB/s Speck128/256-XTS (generic) 47.4 MB/s 35.6 MB/s AES-128-XTS (NEON bit-sliced) 33.4 MB/s 29.6 MB/s AES-256-XTS (NEON bit-sliced) 24.6 MB/s 21.7 MB/s The code performs well on higher-end ARM64 processors as well, though such processors tend to have the Crypto Extensions which make AES preferred. For example, here are the same benchmarks run on a HiKey960 (with CPU affinity set for the A73 cores), with the Crypto Extensions implementation of AES-256-XTS added: Algorithm Encryption Decryption --------- ----------- ----------- AES-256-XTS (Crypto Extensions) 1273.3 MB/s 1274.7 MB/s Speck64/128-XTS (NEON) 359.8 MB/s 348.0 MB/s Speck128/256-XTS (NEON) 292.5 MB/s 286.1 MB/s Speck128/256-XTS (generic) 186.3 MB/s 181.8 MB/s AES-128-XTS (NEON bit-sliced) 142.0 MB/s 124.3 MB/s AES-256-XTS (NEON bit-sliced) 104.7 MB/s 91.1 MB/s Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>		2018-03-16 23:35:41 +08:00
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alpha
arc
arm	crypto: arm/speck - add NEON-accelerated implementation of Speck-XTS	2018-02-22 22:16:55 +08:00
arm64	crypto: arm64/speck - add NEON-accelerated implementation of Speck-XTS	2018-03-16 23:35:41 +08:00
blackfin	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
c6x
cris	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
frv	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
h8300
hexagon
ia64	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
m32r
m68k	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
metag
microblaze
mips	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
mn10300
nios2	nios2 update for v4.16-rc1	2018-02-11 13:52:32 -08:00
openrisc
parisc
powerpc	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
riscv	RISC-V changes for 4.16	2018-02-07 11:33:08 -08:00
s390	KVM changes for 4.16	2018-02-10 13:16:35 -08:00
score	arch/score/kernel/setup.c: combine two seq_printf() calls into one call in show_cpuinfo()	2018-02-06 18:32:47 -08:00
sh
sparc	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
tile
um	mconsole_proc(): don't mess with file->f_pos	2018-02-09 19:28:01 -08:00
unicore32
x86	crypto: x86/des3_ede - des3_ede_skciphers[] can be static	2018-03-09 22:45:53 +08:00
xtensa	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
.gitignore
Kconfig