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Date: Fri, 1 Nov 2019 12:02:13 -0700
From: Kees Cook <keescook@...omium.org>
To: Sami Tolvanen <samitolvanen@...gle.com>
Cc: Will Deacon <will@...nel.org>,
Catalin Marinas <catalin.marinas@....com>,
Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Ard Biesheuvel <ard.biesheuvel@...aro.org>,
Dave Martin <Dave.Martin@....com>,
Laura Abbott <labbott@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Jann Horn <jannh@...gle.com>,
Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
clang-built-linux <clang-built-linux@...glegroups.com>,
Kernel Hardening <kernel-hardening@...ts.openwall.com>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 07/17] scs: add support for stack usage debugging
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@...omium.org> wrote:
> >
> > On Thu, Oct 31, 2019 at 09:46:27AM -0700, samitolvanen@...gle.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
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