apgakey 252 arch/arm64/include/uapi/asm/ptrace.h __uint128_t apgakey; apgakey 1061 arch/arm64/kernel/ptrace.c ukeys->apgakey = pac_key_to_user(&keys->apga); apgakey 1067 arch/arm64/kernel/ptrace.c keys->apga = pac_key_from_user(ukeys->apgakey);