linux-kernel - [PATCH 11/15] x86/cpu: Make CONFIG_X86

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Message-ID: <20250425084216.3913608-12-mingo@kernel.org>
Date: Fri, 25 Apr 2025 10:42:08 +0200
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Ingo Molnar <mingo@...nel.org>,
	"Ahmed S . Darwish" <darwi@...utronix.de>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	Ard Biesheuvel <ardb@...nel.org>,
	Arnd Bergmann <arnd@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	John Ogness <john.ogness@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 11/15] x86/cpu: Make CONFIG_X86_TSC unconditional

I.e. it's a boot time requirement for the CPU to support it.

Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/Kconfig     | 1 -
 arch/x86/Kconfig.cpu | 1 -
 arch/x86/xen/Kconfig | 2 +-
 3 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 137b5ddf1f86..465e5abd2750 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -661,7 +661,6 @@ config X86_INTEL_QUARK
 	depends on X86_32
 	depends on X86_EXTENDED_PLATFORM
 	depends on X86_PLATFORM_DEVICES
-	depends on X86_TSC
 	depends on PCI
 	depends on PCI_GOANY
 	depends on X86_IO_APIC
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index ab4988e06d86..30466a258db8 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -238,7 +238,6 @@ config X86_USE_PPRO_CHECKSUM
 
 config X86_TSC
 	def_bool y
-	depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MATOM) || X86_64
 
 config X86_HAVE_PAE
 	def_bool y
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 98d8a50d2aed..222b6fdad313 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -10,7 +10,7 @@ config XEN
 	select X86_HV_CALLBACK_VECTOR
 	depends on X86_64 || (X86_32 && X86_PAE)
 	depends on X86_64 || (X86_GENERIC || MPENTIUM4 || MATOM)
-	depends on X86_LOCAL_APIC && X86_TSC
+	depends on X86_LOCAL_APIC
 	help
 	  This is the Linux Xen port.  Enabling this will allow the
 	  kernel to boot in a paravirtualized environment under the
-- 
2.45.2