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lib/crypto: Switch ARM and arm64 to 'ksimd' scoped guard API

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Before modifying the prototypes of kernel_neon_begin() and
kernel_neon_end() to accommodate kernel mode FP/SIMD state buffers
allocated on the stack, move arm64 to the new 'ksimd' scoped guard API,
which encapsulates the calls to those functions.

For symmetry, do the same for 32-bit ARM too.

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>
This commit is contained in:
Ard Biesheuvel
2025-10-01 13:29:23 +02:00
parent 814f5415d3
commit f53d18a4e6
11 changed files with 43 additions and 60 deletions
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6
lib/crypto/arm/poly1305.h
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@@ -6,7 +6,6 @@
*/
#include <asm/hwcap.h>
#include <asm/neon.h>
#include <asm/simd.h>
#include <linux/cpufeature.h>
#include <linux/jump_label.h>
@@ -32,9 +31,8 @@ static void poly1305_blocks(struct poly1305_block_state *state, const u8 *src,
do {
unsigned int todo = min_t(unsigned int, len, SZ_4K);
kernel_neon_begin();
poly1305_blocks_neon(state, src, todo, padbit);
kernel_neon_end();
scoped_ksimd()
poly1305_blocks_neon(state, src, todo, padbit);
len -= todo;
src += todo;