diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2025-10-01 13:44:23 +0200 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2025-11-12 09:52:02 +0100 |
| commit | 72cb51233b59429bd9920f396d4a2e8cd1ad1a40 (patch) | |
| tree | adb6e32f094af6f5deb38169ea447fea2c12ae6b | |
| parent | 87c9b04e715d13a7c110b17a66ad279da821cd0e (diff) | |
crypto/arm64: nhpoly1305 - 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/nhpoly1305-neon-glue.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/arm64/crypto/nhpoly1305-neon-glue.c b/arch/arm64/crypto/nhpoly1305-neon-glue.c index e4a0b463f080..013de6ac569a 100644 --- a/arch/arm64/crypto/nhpoly1305-neon-glue.c +++ b/arch/arm64/crypto/nhpoly1305-neon-glue.c @@ -25,9 +25,8 @@ static int nhpoly1305_neon_update(struct shash_desc *desc, do { unsigned int n = min_t(unsigned int, srclen, SZ_4K); - kernel_neon_begin(); - crypto_nhpoly1305_update_helper(desc, src, n, nh_neon); - kernel_neon_end(); + scoped_ksimd() + crypto_nhpoly1305_update_helper(desc, src, n, nh_neon); src += n; srclen -= n; } while (srclen); |