mirror_zfs/module/zstd/lib
Brian Behlendorf 84dd55510b zstd: disable intrinsics
Disable the aarch64 NEON SIMD intrinsics for kernel builds.  Safely
using them in the kernel context requires saving/restoring the FPU
registers which is not currently done.

Additionally, remove the aarch64 optimized PREFETCH_L1 and PREFETCH_L2
instruction.  Rely on the more portable compiler built ins.

This lets us remove the problematic workaround in the aarch64_compat.h
header which undefines the __aarch64__ macro.

Reviewed-by: Rob Norris <robn@despairlabs.com>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #17904
Closes #17852
2025-11-12 13:06:22 -08:00
..
common zstd: disable intrinsics 2025-11-12 13:06:22 -08:00
compress SPDX: license tags: BSD-3-Clause OR GPL-2.0-only 2025-03-13 17:57:17 -07:00
decompress SPDX: license tags: BSD-3-Clause OR GPL-2.0-only 2025-03-13 17:57:17 -07:00
zstd.h SPDX: license tags: BSD-3-Clause OR GPL-2.0-only 2025-03-13 17:57:17 -07:00