[PATCH v2 02/20] arm64/simd: Add scoped guard API for kernel mode SIMD

[Kees Cook]

On Wed, Oct 01, 2025 at 11:02:04PM +0200, Ard Biesheuvel wrote:
> From: Ard Biesheuvel <ardb at kernel.org>
> 
> Encapsulate kernel_neon_begin() and kernel_neon_end() using a 'ksimd'
> cleanup guard. This hides the prototype of those functions, allowing
> them to be changed for arm64 but not ARM, without breaking code that is
> shared between those architectures (RAID6, AEGIS-128)
> 
> It probably makes sense to expose this API more widely across
> architectures, as it affords more flexibility to the arch code to
> plumb it in, while imposing more rigid rules regarding the start/end
> bookends appearing in matched pairs.
> 
> Signed-off-by: Ard Biesheuvel <ardb at kernel.org>

Reviewed-by: Kees Cook <kees at kernel.org>

-- 
Kees Cook