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Date:   Fri, 1 Nov 2019 12:02:13 -0700
From:   Kees Cook <keescook@chromium.org>
To:     Sami Tolvanen <samitolvanen@google.com>
Cc:     Will Deacon <will@kernel.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        Dave Martin <Dave.Martin@arm.com>,
        Laura Abbott <labbott@redhat.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Jann Horn <jannh@google.com>,
        Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
        clang-built-linux <clang-built-linux@googlegroups.com>,
        Kernel Hardening <kernel-hardening@lists.openwall.com>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 07/17] scs: add support for stack usage debugging
Message-ID: <201911011201.A070D143D@keescook>
References: <20191018161033.261971-1-samitolvanen@google.com>
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 <201910312054.3064999E@keescook>
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On Fri, Nov 01, 2019 at 09:32:54AM -0700, Sami Tolvanen wrote:
> On Thu, Oct 31, 2019 at 8:55 PM Kees Cook <keescook@chromium.org> wrote:
> >
> > On Thu, Oct 31, 2019 at 09:46:27AM -0700, samitolvanen@google.com wrote:
> > > Implements CONFIG_DEBUG_STACK_USAGE for shadow stacks.
> >
> > Did I miss it, or is there no Kconfig section for this? I just realized
> > I can't find it. I was going to say "this commit log should explain
> > why/when this option is used", but then figured it might be explained in
> > the Kconfig ... but I couldn't find it. ;)
> 
> It's in lib/Kconfig.debug. But yes, I will add a commit message in v4.

Oh duh -- it's an existing option. Cool; I'm all good. :)

-- 
Kees Cook