linux-kernel - [PATCH 07/11] vdso: Drop kconfig GENERIC_VDSO

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Message-Id: <20250826-vdso-cleanups-v1-7-d9b65750e49f@linutronix.de>
Date: Tue, 26 Aug 2025 08:17:10 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Andy Lutomirski <luto@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, 
 Vincenzo Frascino <vincenzo.frascino@....com>, 
 Paul Walmsley <paul.walmsley@...ive.com>, 
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
 Alexandre Ghiti <alex@...ti.fr>, Nam Cao <namcao@...utronix.de>, 
 Russell King <linux@...linux.org.uk>, 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>, 
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
 Huacai Chen <chenhuacai@...nel.org>, WANG Xuerui <kernel@...0n.name>, 
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
 Madhavan Srinivasan <maddy@...ux.ibm.com>, 
 Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>, 
 Christophe Leroy <christophe.leroy@...roup.eu>, 
 Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>, 
 Alexander Gordeev <agordeev@...ux.ibm.com>, 
 Christian Borntraeger <borntraeger@...ux.ibm.com>, 
 Sven Schnelle <svens@...ux.ibm.com>, Arnd Bergmann <arnd@...db.de>, 
 Christian Brauner <brauner@...nel.org>, Shuah Khan <shuah@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, 
 linux-arm-kernel@...ts.infradead.org, loongarch@...ts.linux.dev, 
 linux-mips@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, 
 linux-s390@...r.kernel.org, linux-arch@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, 
 Rasmus Villemoes <linux@...musvillemoes.dk>, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH 07/11] vdso: Drop kconfig GENERIC_VDSO_32

This configuration is never used.

Remove it.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
 arch/arm/mm/Kconfig | 1 -
 arch/x86/Kconfig    | 1 -
 lib/vdso/Kconfig    | 7 -------
 3 files changed, 9 deletions(-)

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 5c1023a6d78c1b4db67b2d62b71af5a79b7e701f..2347988cf6417b91d8d3580387b53e610ed49a00 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -926,7 +926,6 @@ config VDSO
 	default y if ARM_ARCH_TIMER
 	select HAVE_GENERIC_VDSO
 	select GENERIC_TIME_VSYSCALL
-	select GENERIC_VDSO_32
 	select GENERIC_GETTIMEOFDAY
 	select GENERIC_VDSO_DATA_STORE
 	help
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 58d890fe2100eb6990880bcf5ba600cdefb0a7d1..4f120070a51bd4e225256440649a2dae17025c41 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -14,7 +14,6 @@ config X86_32
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select CLKSRC_I8253
 	select CLONE_BACKWARDS
-	select GENERIC_VDSO_32
 	select HAVE_DEBUG_STACKOVERFLOW
 	select KMAP_LOCAL
 	select MODULES_USE_ELF_REL
diff --git a/lib/vdso/Kconfig b/lib/vdso/Kconfig
index 45df764b49ad62479e6456e00c053e46131936a3..76157c26931d28327750ad53bfcae5109a29d998 100644
--- a/lib/vdso/Kconfig
+++ b/lib/vdso/Kconfig
@@ -12,13 +12,6 @@ config GENERIC_GETTIMEOFDAY
 	  Each architecture that enables this feature has to
 	  provide the fallback implementation.

-config GENERIC_VDSO_32
-	bool
-	depends on GENERIC_GETTIMEOFDAY && !64BIT
-	help
-	  This config option helps to avoid possible performance issues
-	  in 32 bit only architectures.
-
 config GENERIC_COMPAT_VDSO
 	bool
 	help

-- 
2.50.1