Re: [PATCH] x86/kbuild: enable modversions for symbols exported from asm
- To: Nicholas Piggin <npiggin@gmail.com>
- Cc: Linus Torvalds <torvalds@linux-foundation.org>, skozina@redhat.com, Ben Hutchings <ben@decadent.org.uk>, Michal Marek <mmarek@suse.com>, Adam Borowski <kilobyte@angband.pl>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>, Debian kernel maintainers <debian-kernel@lists.debian.org>, "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>, Arnd Bergmann <arnd@arndb.de>, Ingo Molnar <mingo@kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
- Subject: Re: [PATCH] x86/kbuild: enable modversions for symbols exported from asm
- From: Don Zickus <dzickus@redhat.com>
- Date: Fri, 9 Dec 2016 11:16:51 -0500
- Message-id: <[🔎] 20161209161651.GB35881@redhat.com>
- In-reply-to: <[🔎] 20161209135041.5ff12770@roar.ozlabs.ibm.com>
- References: <30bb2db4-47bd-0c35-8328-ef032b551f06@suse.com> <CA+55aFxOGw57Gm-QiNs13kfy5k=aRrn3+98415V0g73eGc66mg@mail.gmail.com> <20161129195721.GI2697@decadent.org.uk> <CA+55aFyQko0t8oMZjhnwhWHrmBUyWjGhsnT=oUOU-W7_04xdzw@mail.gmail.com> <20161201051852.28dc335f@roar.ozlabs.ibm.com> <CA+55aFzMTrLMrr69ipdaKhz+RJhUu3BxB+kg0689qq_470qEcw@mail.gmail.com> <[🔎] 20161201041325.GX35881@redhat.com> <[🔎] 20161201153215.43b6cec7@roar.ozlabs.ibm.com> <[🔎] 20161201152039.GB35881@redhat.com> <[🔎] 20161209135041.5ff12770@roar.ozlabs.ibm.com>
On Fri, Dec 09, 2016 at 01:50:41PM +1000, Nicholas Piggin wrote:
> >
> > We have plenty of customers with 10 year old drivers, where the expertise
> > has long left the company. The engineers still around, recompile and make
> > tweaks to get things working on the latest RHEL. Verify it passes testing
> > and release it. Then they hope to not touch it again for a few years until
> > the next RHEL comes along.
> >
> > Scary, huh? :-)
>
> Oh yeah my aim here is not to make distro or out of tree module vendors
> life harder, actually the opposite. If it turns out modversions really is
> the best approach, I'm not in a position to complain about its complexity
> because we have Suse and Redhat people maintaining the build and module
> systems :) I just want to see if we can do things better.
Hi Nick,
I think we are in pretty good agreement here. We can do better than
modversions. On the flip side, I would hate to see modversions ripped out
until we have an alternate path forward as it does get us by for now. :-)
Cheers,
Don
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