Re: [PATCH v2 01/10] objtool: Move header sync-check ealier in build

[Julien Thierry]

On 4/1/20 1:32 PM, Miroslav Benes wrote:
> On Fri, 27 Mar 2020, Julien Thierry wrote:
>
> > Currently, the check of tools files against kernel equivalent is only
> > done after every object file has been built.
>
> > This means one might fix
> > build issues against outdated headers without seeing a warning about
> > this.
>
> Could you explain the above in more detail, please?

I must admit that this patch is more fixing the issues I've faced while 
working on the arm64 support and sharing some kernel headers from the 
arch/arm64 tree.

The annoying part was:
- Have build errors in objtool
- Fix them
- Objtool build succeeds, but have warning about outdated headers
- Update headers
- New errors come up, potentially making obsolete the ealier fixes

So it's not really a "must have" change. But it's nice to have when 
bringing new kernel headers to objtool.

I hope this makes things clearer.

Cheers,

--
Julien Thierry