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Re: Release 2.26 - Next week ?
- From: Tristan Gingold <gingold at adacore dot com>
- To: Alan Modra <amodra at gmail dot com>
- Cc: "H.J. Lu" <hjl dot tools at gmail dot com>, Matthias Klose <doko at ubuntu dot com>, binutils <binutils at sourceware dot org>
- Date: Thu, 14 Jan 2016 09:17:56 +0100
- Subject: Re: Release 2.26 - Next week ?
- Authentication-results: sourceware.org; auth=none
- References: <568FF162 dot 5000801 at ubuntu dot com> <828FEF00-284A-48C3-9395-2295167002EA at adacore dot com> <20160113010412 dot GB1270 at bubble dot grove dot modra dot org> <CAMe9rOpPPFuAwR-vif32KvDnjHRy5p4ushrvhrVso43681E+3Q at mail dot gmail dot com> <20160113015844 dot GC1270 at bubble dot grove dot modra dot org> <CAMe9rOqyLdTz5FiiMVTukDnQwby+Kx_wzmHtWtNu6n3ZOXfEDA at mail dot gmail dot com> <20160113034534 dot GD1270 at bubble dot grove dot modra dot org> <CAMe9rOrOaGWKS7me-v8AqUPKpKg=JxHcFdePBFPVtOEkKXGiuw at mail dot gmail dot com> <20160113061824 dot GE1270 at bubble dot grove dot modra dot org> <CAMe9rOqtizKXd87rRDDSGQiQ55pFjXRSf_2c1jwg6w45xx9x2g at mail dot gmail dot com> <20160113232249 dot GF1270 at bubble dot grove dot modra dot org>
> On 14 Jan 2016, at 00:22, Alan Modra <email@example.com> wrote:
> On Wed, Jan 13, 2016 at 05:26:09AM -0800, H.J. Lu wrote:
>> On Tue, Jan 12, 2016 at 10:18 PM, Alan Modra <firstname.lastname@example.org> wrote:
>> My x86-64 kernel has
>> # CONFIG_MODVERSIONS is not set
>> Will I see the problem if I turn on CONFIG_MODVERSIONS and turn
>> off CONFIG_RELOCATABLE?
> No. The Linux kernel problem is specific to ppc64 ELFv2, and the
> .TOC. symbol.
>>> The important question is: Was PR4317 just cosmetic?
>> I don't remember what triggered me to open the bug.
> So, Tristan, should I revert my PR4317 patch for 2.26?
> The argument for this action is that we have a presumed cosmetic fix
> that causes a known regression. The regression failure has been
> analyzed sufficiently to know the exact cause. There is also some
> small chance that other projects that post-process a final-linked
> executable might similarly fail when undefined symbols are removed.
> Against that is the fact that the PR4317 patch has been applied for
> quite a while, and the kernel or anything else that depends on
> undefined symbols in an executable is quite fragile if not downright
> I'm inclined to revert the patch for 2.26 but leave it in for 2.27.
Yes, this looks to be the safest action.
Thank you for the head up.