[yocto] binutils 2.29.1 ARM Thumb kernel problem

[Andre McCurdy]

On Mon, Apr 2, 2018 at 3:49 PM, akuster808 <akuster808 at gmail.com> wrote:
> On 04/02/2018 01:15 PM, Chris Elledge wrote:
>
> I recently upgraded my Yocto based project to Yocto 2.4.2, and I encountered
> a problem when building my custom kernel for an AT91 SAMA5D3X platform. I've
> been using an ARM Thumb2 kernel for a while successfully until this release.
> It appears that the issue stems from the change to binutils version 2.29.1.
>
> Here's a good description of the problem:
> https://patchwork.kernel.org/patch/10072695/
>
> I will take a look. Can you provide a reproducer? ie qemuarm tweak??

Reproducing with qemuarm would require both changing qemuarm to use a
CPU with supports Thumb2 and then changing the kernel config to build
a Thumb2 kernel. It's not going to be a trivial tweak.