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ddefde7b |
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09-Oct-2023 |
Eric Biggers <ebiggers@google.com> |
crypto: arm64/nhpoly1305 - implement ->digest Implement the ->digest method to improve performance on single-page messages by reducing the number of indirect calls. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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e5e1c67e |
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18-Nov-2022 |
Eric Biggers <ebiggers@google.com> |
crypto: arm64/nhpoly1305 - eliminate unnecessary CFI wrapper Since the CFI implementation now supports indirect calls to assembly functions, take advantage of that rather than use a wrapper function. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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a9a8ba90 |
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22-Apr-2020 |
Jason A. Donenfeld <Jason@zx2c4.com> |
crypto: arch/nhpoly1305 - process in explicit 4k chunks Rather than chunking via PAGE_SIZE, this commit changes the arch implementations to chunk in explicit 4k parts, so that calculations on maximum acceptable latency don't suddenly become invalid on platforms where PAGE_SIZE isn't 4k, such as arm64. Fixes: 0f961f9f670e ("crypto: x86/nhpoly1305 - add AVX2 accelerated NHPoly1305") Fixes: 012c82388c03 ("crypto: x86/nhpoly1305 - add SSE2 accelerated NHPoly1305") Fixes: a00fa0c88774 ("crypto: arm64/nhpoly1305 - add NEON-accelerated NHPoly1305") Fixes: 16aae3595a9d ("crypto: arm/nhpoly1305 - add NEON-accelerated NHPoly1305") Cc: stable@vger.kernel.org Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Reviewed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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aaba098f |
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09-Apr-2019 |
Andrew Murray <amurray@thegoodpenguin.co.uk> |
arm64: HWCAP: add support for AT_HWCAP2 As we will exhaust the first 32 bits of AT_HWCAP let's start exposing AT_HWCAP2 to userspace to give us up to 64 caps. Whilst it's possible to use the remaining 32 bits of AT_HWCAP, we prefer to expand into AT_HWCAP2 in order to provide a consistent view to userspace between ILP32 and LP64. However internal to the kernel we prefer to continue to use the full space of elf_hwcap. To reduce complexity and allow for future expansion, we now represent hwcaps in the kernel as ordinals and use a KERNEL_HWCAP_ prefix. This allows us to support automatic feature based module loading for all our hwcaps. We introduce cpu_set_feature to set hwcaps which complements the existing cpu_have_feature helper. These helpers allow us to clean up existing direct uses of elf_hwcap and reduce any future effort required to move beyond 64 caps. For convenience we also introduce cpu_{have,set}_named_feature which makes use of the cpu_feature macro to allow providing a hwcap name without a {KERNEL_}HWCAP_ prefix. Signed-off-by: Andrew Murray <andrew.murray@arm.com> [will: use const_ilog2() and tweak documentation] Signed-off-by: Will Deacon <will.deacon@arm.com>
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e52b7023 |
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12-Mar-2019 |
Eric Biggers <ebiggers@google.com> |
crypto: arm64 - convert to use crypto_simd_usable() Replace all calls to may_use_simd() in the arm64 crypto code with crypto_simd_usable(), in order to allow testing the no-SIMD code paths. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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a00fa0c8 |
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03-Dec-2018 |
Eric Biggers <ebiggers@google.com> |
crypto: arm64/nhpoly1305 - add NEON-accelerated NHPoly1305 Add an ARM64 NEON implementation of NHPoly1305, an ε-almost-∆-universal hash function used in the Adiantum encryption mode. For now, only the NH portion is actually NEON-accelerated; the Poly1305 part is less performance-critical so is just implemented in C. Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> # big-endian Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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