linux-kernel - Re: [RFC] module: Strict per-modname namespaces

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Message-ID: <2024110716-skimmer-dreary-54ef@gregkh>
Date: Thu, 7 Nov 2024 07:12:43 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: Peter Zijlstra <peterz@...radead.org>
Cc: mcgrof@...nel.org, x86@...nel.org, hpa@...or.com, petr.pavlu@...e.com,
	samitolvanen@...gle.com, da.gomez@...sung.com, masahiroy@...nel.org,
	nathan@...nel.org, nicolas@...sle.eu, linux-kernel@...r.kernel.org,
	linux-modules@...r.kernel.org, linux-kbuild@...r.kernel.org,
	hch@...radead.org
Subject: Re: [RFC] module: Strict per-modname namespaces

On Wed, Nov 06, 2024 at 08:02:40PM +0100, Peter Zijlstra wrote:
> Hi,
> 
> I've been wanting $topic for a while, and having just stumbled into the
> whole namespace thing by accident, I figured I'd give it a go, most if
> the hard parts seem to have already been done.
> 
> It reserves and disallows imports on any "MODULE_${name}" namespace,
> while it implicitly adds the same namespace to every module.
> 
> This allows exports targeted at specific modules and no others -- one
> random example included. I've hated the various kvm exports we've had
> for a while, and strictly limiting them to the kvm module helps
> alleviate some abuse potential.

Very nice!  I like it too, no objection from me, should make it easier
to clean up a lot of stuff.

greg k-h