Re: [PATCH v4 3/4] arm64/ptrace: Support access to TPIDR2_EL0

On Mon, Aug 29, 2022 at 04:49:20PM +0100, Mark Brown wrote:

@@ -1392,7 +1407,7 @@ static const struct user_regset aarch64_regsets[] = { }, [REGSET_TLS] = { .core_note_type = NT_ARM_TLS,

• .n = 1,
  

• .n = 2,
  

  .size = sizeof(void *), .align = sizeof(void *), .regset_get = tls_get,

Does this change confuse user-space? I presume an updated gdb would check the iov.len to figure out whether a new register is available but would existing debuggers complain of the new size of this regset?