diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2025-10-01 13:45:49 +0200 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2025-11-12 09:52:02 +0100 |
| commit | 931ceb5785755d82d80bb923c22ca08128af7721 (patch) | |
| tree | f62c28dd8d4779eb29607aceec430da7a1465a62 | |
| parent | 72cb51233b59429bd9920f396d4a2e8cd1ad1a40 (diff) | |
crypto/arm64: polyval - Switch to 'ksimd' scoped guard API
Switch to the more abstract 'scoped_ksimd()' API, which will be modified
in a future patch to transparently allocate a kernel mode FP/SIMD state
buffer on the stack, so that kernel mode FP/SIMD code remains
preemptible in principe, but without the memory overhead that adds 528
bytes to the size of struct task_struct.
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
| -rw-r--r-- | arch/arm64/crypto/polyval-ce-glue.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/arm64/crypto/polyval-ce-glue.c b/arch/arm64/crypto/polyval-ce-glue.c index c4e653688ea0..51eefbe97885 100644 --- a/arch/arm64/crypto/polyval-ce-glue.c +++ b/arch/arm64/crypto/polyval-ce-glue.c @@ -15,7 +15,7 @@ * ARMv8 Crypto Extensions instructions to implement the finite field operations. */ -#include <asm/neon.h> +#include <asm/simd.h> #include <crypto/internal/hash.h> #include <crypto/polyval.h> #include <crypto/utils.h> @@ -45,16 +45,14 @@ asmlinkage void pmull_polyval_mul(u8 *op1, const u8 *op2); static void internal_polyval_update(const struct polyval_tfm_ctx *keys, const u8 *in, size_t nblocks, u8 *accumulator) { - kernel_neon_begin(); - pmull_polyval_update(keys, in, nblocks, accumulator); - kernel_neon_end(); + scoped_ksimd() + pmull_polyval_update(keys, in, nblocks, accumulator); } static void internal_polyval_mul(u8 *op1, const u8 *op2) { - kernel_neon_begin(); - pmull_polyval_mul(op1, op2); - kernel_neon_end(); + scoped_ksimd() + pmull_polyval_mul(op1, op2); } static int polyval_arm64_setkey(struct crypto_shash *tfm, |