Re: [patch V4 part 2 01/18] x86/entry/64: Move non entry code into .text section

[Andy Lutomirski]

On Tue, May 5, 2020 at 7:14 AM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>
> All ASM code which is not part of the entry functionality can move out into
> the .text section. No reason to keep it in the non-instrumentable entry
> section.

Ick.  How about just moving that code into another file altogether?

> +.pushsection .text, "ax"
>  SYM_FUNC_START(native_load_gs_index)
>         FRAME_BEGIN
>         pushfq
> @@ -1058,6 +1063,7 @@ SYM_FUNC_START(native_load_gs_index)
>         ret
>  SYM_FUNC_END(native_load_gs_index)
>  EXPORT_SYMBOL(native_load_gs_index)
> +.popsection

native_load_gs_index is toast if it gets instrumented in the wrong way.