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Message-ID: <202009031450.31C71DB@keescook>
Date: Thu, 3 Sep 2020 14:51:10 -0700
From: Kees Cook <keescook@...omium.org>
To: Sami Tolvanen <samitolvanen@...gle.com>
Cc: Masahiro Yamada <masahiroy@...nel.org>, Will Deacon <will@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Steven Rostedt <rostedt@...dmis.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Paul E. McKenney" <paulmck@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
clang-built-linux@...glegroups.com,
kernel-hardening@...ts.openwall.com, linux-arch@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kbuild@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
x86@...nel.org
Subject: Re: [PATCH v2 05/28] objtool: Add a pass for generating __mcount_loc
On Thu, Sep 03, 2020 at 01:30:30PM -0700, Sami Tolvanen wrote:
> From: Peter Zijlstra <peterz@...radead.org>
>
> 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/20200625200235.GQ4781@hirez.programming.kicks-ass.net/
> Signed-off-by: Peter Zijlstra <peterz@...radead.org>
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 <keescook@...omium.org>
--
Kees Cook
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