linux-kernel - Re: [PATCH 03/12] tools/nolibc: move entrypoint specifics to compiler.h

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Message-ID: <20240803092204.GA29127@1wt.eu>
Date: Sat, 3 Aug 2024 11:22:04 +0200
From: Willy Tarreau <w@....eu>
To: Thomas Weißschuh <linux@...ssschuh.net>
Cc: Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH 03/12] tools/nolibc: move entrypoint specifics to
 compiler.h

Hi Thomas,

On Sun, Jul 28, 2024 at 12:09:57PM +0200, Thomas Weißschuh wrote:
> The specific attributes for the _start entrypoint are duplicated for
> each architecture.
> Deduplicate it into a dedicated #define into compiler.h.
> This make the code shorter and will make it easier to adapt for clang
> compatibility.
> 
> For clang compatibility, the epilogue will also need to be adapted, so
> move that one, too.

I'm fine with the general approach, however I think that if we start to
add specific attributes and macros like this, we should prefix them with
"nolibc" to make sure they won't collide with userland.

Thanks,
willy