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Date: Fri, 18 Sep 2026 18:25:08 -0700
From: Nathan Chancellor <nathan@kernel.org>
To: Kees Cook <kees@kernel.org>
Cc: Nicolas Schier <nsc@kernel.org>,
	"Lorenzo Stoakes (ARM)" <ljs@kernel.org>,
	Julian Braha <julianbraha@gmail.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Shuah Khan <skhan@linuxfoundation.org>,
	Randy Dunlap <rdunlap@infradead.org>,
	Vegard Nossum <vegard.nossum@oracle.com>,
	Nauman Sabir <officialnaumansabir@gmail.com>,
	Tejun Heo <tj@kernel.org>, Nicolas Pitre <nico@fluxnic.net>,
	Thomas =?iso-8859-1?Q?Wei=DFschuh?= <thomas.weissschuh@linutronix.de>,
	Matthew Maurer <mmaurer@google.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Andrew Jones <andrew.jones@linux.dev>,
	Graham Roff <grahamr@qti.qualcomm.com>,
	Masahiro Yamada <masahiroy@kernel.org>,
	Arnd Bergmann <arnd@arndb.de>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Miguel Ojeda <ojeda@kernel.org>,
	"Borislav Petkov (AMD)" <bp@alien8.de>, Gary Guo <gary@garyguo.net>,
	linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: Re: [PATCH 0/3] kconfig: Introduce cc-option-str
Message-ID: <20260919012508.GA3573999@ax162>
References: <20260919005923.i.879-kees@kernel.org>
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In-Reply-To: <20260919005923.i.879-kees@kernel.org>

On Fri, Sep 18, 2026 at 05:59:24PM -0700, Kees Cook wrote:
> Hi,
> 
> While reviewing the recent build speedup series[1], it became clear
> that we needed a general solution in kconfig to avoid repeating detected
> toolchain options. Implement cc-option-str and ld-option-str, and while
> at it, create "def_string" and friends to match "def_bool".
> 
> -Kees
> 
> [1] https://lore.kernel.org/all/20260918054058.GA384222@ax162/
> 
> Kees Cook (3):
>   kconfig: Add "def_string", "def_int" and "def_hex"
>   kconfig: Replace "cc-option-bit" with "cc-option-str"
>   kconfig: Add "ld-option-str"

Thanks, exactly what I had in mind. This seems reasonable to me and
passes my basic testing. I will let folks chime in for a few days then
apply this to kbuild-next so that Lorenzo can use it as part of the
speed up series.

-- 
Cheers,
Nathan