lib/std/Thread.zig            |   6 +-
 lib/std/target/aarch64.zig    |  18 ++
 lib/std/zig/system/linux.zig  | 283 +++++++++++++++++++++++++++++++-
 tools/update_cpu_features.zig |  22 +++
 4 files changed, 320 insertions(+), 9 deletions(-)