linux-kernel - [PATCH 1/2] x86: make X86_FEATURE_NAMES non-configurable in prompt

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Date:   Wed, 10 May 2023 08:57:12 +0200
From:   Lukas Bulwahn <lukas.bulwahn@...il.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H . Peter Anvin" <hpa@...or.com>
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Arnd Bergmann <arnd@...db.de>, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Lukas Bulwahn <lukas.bulwahn@...il.com>
Subject: [PATCH 1/2] x86: make X86_FEATURE_NAMES non-configurable in prompt

While discussing to change the visibility of X86_FEATURE_NAMES (see Link)
in order to remove CONFIG_EMBEDDED, Boris suggested to simply make the
X86_FEATURE_NAMES functionality unconditional.

As a first step, make X86_FEATURE_NAMES disappear in the config prompt. So,
as X86_FEATURE_NAMES defaults to yes, to disable it, one now needs to
modify the .config file before compiling the kernel.

If there are no complaints on this config after a grace period, we can then
further remove the config entirely.

Link: https://lore.kernel.org/all/20230509084007.24373-1-lukas.bulwahn@gmail.com/

Suggested-by: Borislav Petkov <bp@...en8.de>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@...il.com>
---
 arch/x86/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 53bab123a8ee..a7db116e429a 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -442,7 +442,7 @@ config SMP
 	  If you don't know what to do here, say N.
 
 config X86_FEATURE_NAMES
-	bool "Processor feature human-readable names" if EMBEDDED
+	bool
 	default y
 	help
 	  This option compiles in a table of x86 feature bits and corresponding
-- 
2.17.1