Subject: Re: [PATCH v2 05/28] objtool: Add a pass for generating __mcount_loc

From: Kees Cook <[email-masked]>
Date: Thu, 3 Sep 2020 14:51:10 -0700

On Thu, Sep 03, 2020 at 01:30:30PM -0700, Sami Tolvanen wrote:
> From: Peter Zijlstra <[email-masked]>
> 
> Add the --mcount option for generating __mcount_loc sections
> needed for dynamic ftrace. Using this pass requires the kernel to
> be compiled with -mfentry and CC_USING_NOP_MCOUNT to be defined
> in Makefile.
> 
> Link: https://lore.kernel.org/lkml/[email-masked]/
> Signed-off-by: Peter Zijlstra <[email-masked]>

Hmm, I'm not sure why this hasn't gotten picked up yet. Is this expected
to go through -tip or something else?

Reviewed-by: Kees Cook <[email-masked]>

-- 
Kees Cook

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