Re: [PATCH 02/24] objtool: Add retpoline validation

[Borislav Petkov]

On Tue, Jan 23, 2018 at 04:25:41PM +0100, Peter Zijlstra wrote:
> David requested a objtool validation pass for RETPOLINE enabled
> builds, where it validates no unannotated indirect  jumps or calls are
> left.
> 
> Add an additional .discard.retpoline_safe section to allow annotating
> the few indirect sites that are required and safe.
> 
> Requested-by: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
> ---
>  scripts/Makefile.build        |    4 +
>  tools/objtool/builtin-check.c |    3 -
>  tools/objtool/builtin.h       |    2 
>  tools/objtool/check.c         |   87 ++++++++++++++++++++++++++++++++++++++++--
>  tools/objtool/check.h         |    1 
>  5 files changed, 92 insertions(+), 5 deletions(-)

Yap, very noisy:

$ grep indirect build.log | wc -l
12904

Let's see how many will remain at the end of the patchset. :)

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.