[Xenial] SRU: Revert x86/vdso linker changes from #1830890 as this causes glibc 2.29-0ubuntu3 FTBFS on eoan

[Alex Murray]

Kleber noted I forgot to add by signed off for these (thanks for the
heads up) so:

Signed-off-by: Alex Murray <alex.murray at canonical.com>


On Wed, 2019-06-26 at 16:59:33 +0100, alex.murray at canonical.com wrote:

> From: Alex Murray <alex.murray at canonical.com>
>
> [Impact]
> As reported in #1833067 and
> https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1830890/comments/7
> some glibc testcases are still regressing on i386 after applying both the
> following commits:
>
> commit 379d98ddf41344273d9718556f761420f4dc80b3
> Author: Alistair Strachan <astrachan at google.com>
> Date: Fri Aug 3 10:39:31 2018 -0700
>
>     x86: vdso: Use $LD instead of $CC to link
>
> commit cd01544a268ad8ee5b1dfe42c4393f1095f86879
> Author: Alistair Strachan <astrachan at google.com>
> Date: Fri Dec 14 14:36:37 2018 -0800
>
>     x86/vdso: Pass --eh-frame-hdr to the linker
>
> [Fix]
> Revert both these patches to restore the original behaviour.
>
> [Test]
> ADT tests for glibc.
>
> [Regression Potential]
> Low. This restores the status quo before the original change to
> vdso/x86/Makefile to restore the original linker behaviour.
>
> Alex Murray (2):
>   Revert "x86/vdso: Pass --eh-frame-hdr to the linker"
>   Revert "x86: vdso: Use $LD instead of $CC to link"
>
>  arch/x86/entry/vdso/Makefile | 22 ++++++++++++----------
>  1 file changed, 12 insertions(+), 10 deletions(-)
>
> -- 
> 2.17.1