Re: [PATCH v8 05/14] x86: conditionally place regular ASM functions into separate sections

Alexander Lobakin
2021-12-03T14:11:30Z

From: Peter Zijlstra <peterz@infradead.org>
Date: Fri, 3 Dec 2021 10:44:10 +0100

> On Thu, Dec 02, 2021 at 11:32:05PM +0100, Alexander Lobakin wrote:
> > Use the newly introduces macros to create unique separate sections
> > for (almost) every "regular" ASM function (i.e. for those which
> > aren't explicitly put into a specific one).
> > There should be no leftovers as input .text will be size-asserted
> > in the LD script generated for FG-KASLR.
>
> *groan*...
>
> Please, can't we do something like:
>
> #define SYM_PUSH_SECTION(name) \
> .if section == .text \
> .push_section .text.##name \
> .else \
> .push_section .text \
> .endif
>
> #define SYM_POP_SECTION() \
> .pop_section
>
> and wrap that inside the existing SYM_FUNC_START*() SYM_FUNC_END()
> macros.

Ah I see. I asked about this in my previous mail and you replied
already (: Cool stuff, I'll use it, it simplifies things a lot.

Thanks!
Al