linux-kernel - Re: [PATCH v8 2/3] modpost: Produce extended MODVERSIONS information

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Message-ID: <ZyNr--iMz_6Fj4yq@bombadil.infradead.org>
Date: Thu, 31 Oct 2024 04:37:31 -0700
From: Luis Chamberlain <mcgrof@...nel.org>
To: Matthew Maurer <mmaurer@...gle.com>
Cc: Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Naveen N Rao <naveen@...nel.org>,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Petr Pavlu <petr.pavlu@...e.com>,
	Sami Tolvanen <samitolvanen@...gle.com>,
	Daniel Gomez <da.gomez@...sung.com>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>, Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	linux-modules@...r.kernel.org, linux-kbuild@...r.kernel.org,
	rust-for-linux@...r.kernel.org
Subject: Re: [PATCH v8 2/3] modpost: Produce extended MODVERSIONS information

On Wed, Oct 30, 2024 at 11:05:03PM +0000, Matthew Maurer wrote:
> diff --git a/kernel/module/Kconfig b/kernel/module/Kconfig
> index e6b2427e5c190aacf7b9c5c1bb57fca39d311564..a31c617cd67d3d66b24d2fba34cbd5cc9c53ab78 100644
> --- a/kernel/module/Kconfig
> +++ b/kernel/module/Kconfig
> @@ -208,6 +208,16 @@ config ASM_MODVERSIONS
>  	  assembly. This can be enabled only when the target architecture
>  	  supports it.
>  
> +config EXTENDED_MODVERSIONS
> +	bool "Extended Module Versioning Support"
> +	depends on MODVERSIONS
> +	help
> +	  This enables extended MODVERSIONs support, allowing long symbol
> +	  names to be versioned.
> +
> +	  The most likely reason you would enable this is to enable Rust
> +	  support. If unsure, say N.
> +

The question is, if only extended moversions are used, what new tooling
requirements are there? Can you test using only extended modversions?

  Luis