linux-kernel - [PATCH] x86/cpu: drop unused Kconfig symbol X86_P6

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Message-ID: <20251228232732.2636507-1-rdunlap@infradead.org>
Date: Sun, 28 Dec 2025 15:27:32 -0800
From: Randy Dunlap <rdunlap@...radead.org>
To: linux-kernel@...r.kernel.org
Cc: Randy Dunlap <rdunlap@...radead.org>,
	Arnd Bergmann <arnd@...db.de>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	x86@...nel.org
Subject: [PATCH] x86/cpu: drop unused Kconfig symbol X86_P6_NOP

This symbol was removed in early 2025 but 2 dangling references to it
were missed. Delete them now.

Fixes: f388f60ca904 ("x86/cpu: Drop configuration options for early 64-bit CPUs")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
---
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: x86@...nel.org

 arch/x86/Kconfig.cpufeatures |    2 +-
 arch/x86/Makefile_32.cpu     |    6 ------
 2 files changed, 1 insertion(+), 7 deletions(-)

--- linux-next-20251219.orig/arch/x86/Kconfig.cpufeatures
+++ linux-next-20251219/arch/x86/Kconfig.cpufeatures
@@ -38,7 +38,7 @@ config X86_REQUIRED_FEATURE_ALWAYS
 
 config X86_REQUIRED_FEATURE_NOPL
 	def_bool y
-	depends on X86_64 || X86_P6_NOP
+	depends on X86_64
 
 config X86_REQUIRED_FEATURE_CX8
 	def_bool y
--- linux-next-20251219.orig/arch/x86/Makefile_32.cpu
+++ linux-next-20251219/arch/x86/Makefile_32.cpu
@@ -42,9 +42,3 @@ cflags-$(CONFIG_MGEODE_LX)	+= $(call cc-
 # add at the end to overwrite eventual tuning options from earlier
 # cpu entries
 cflags-$(CONFIG_X86_GENERIC) 	+= $(call tune,generic,$(call tune,i686))
-
-# Bug fix for binutils: this option is required in order to keep
-# binutils from generating NOPL instructions against our will.
-ifneq ($(CONFIG_X86_P6_NOP),y)
-cflags-y			+= $(call cc-option,-Wa$(comma)-mtune=generic32,)
-endif