[PATCH 00/11] vdso: Various cleanups

From: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
To: Andy Lutomirski <luto@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	 Vincenzo Frascino <vincenzo.frascino@arm.com>,
	 Paul Walmsley <paul.walmsley@sifive.com>,
	 Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	 Alexandre Ghiti <alex@ghiti.fr>, Nam Cao <namcao@linutronix.de>,
	 Russell King <linux@armlinux.org.uk>,
	Ingo Molnar <mingo@redhat.com>,  Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	 x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	 Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	 Huacai Chen <chenhuacai@kernel.org>,
	WANG Xuerui <kernel@xen0n.name>,
	 Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	 Madhavan Srinivasan <maddy@linux.ibm.com>,
	 Michael Ellerman <mpe@ellerman.id.au>,
	Nicholas Piggin <npiggin@gmail.com>,
	 Christophe Leroy <christophe.leroy@csgroup.eu>,
	 Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	 Alexander Gordeev <agordeev@linux.ibm.com>,
	 Christian Borntraeger <borntraeger@linux.ibm.com>,
	 Sven Schnelle <svens@linux.ibm.com>,
	Arnd Bergmann <arnd@arndb.de>,
	 Christian Brauner <brauner@kernel.org>,
	Shuah Khan <shuah@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev,
	linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-s390@vger.kernel.org, linux-arch@vger.kernel.org,
	linux-kselftest@vger.kernel.org,
	"Rasmus Villemoes" <linux@rasmusvillemoes.dk>,
	"Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
Subject: [PATCH 00/11] vdso: Various cleanups
Date: Tue, 26 Aug 2025 08:17:03 +0200	[thread overview]
Message-ID: <20250826-vdso-cleanups-v1-0-d9b65750e49f@linutronix.de> (raw)

Various cleanups to the generic vDSO infrastructure and a patch for ARM
which was never applied.

This series has one trivial syntactic conflict with "dso/datastore: Allow
prefaulting by mlockall()" [0] and a semantic one with "sparc64: vdso:
Switch to generic vDSO library" [1], which still uses the removed
GENERIC_VDSO_DATA_STORE.

[0] https://lore.kernel.org/lkml/20250812-vdso-mlockall-v1-0-2f49ba7cf819@linutronix.de/
[1] https://lore.kernel.org/lkml/20250815-vdso-sparc64-generic-2-v2-0-b5ff80672347@linutronix.de/

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
Rasmus Villemoes (1):
      ARM: VDSO: remove cntvct_ok global variable

Thomas Weißschuh (10):
      vdso/datastore: Gate time data behind CONFIG_GENERIC_GETTIMEOFDAY
      vdso: Move ENABLE_COMPAT_VDSO from core to arm64
      vdso/gettimeofday: Remove !CONFIG_TIME_NS stubs
      time: Build generic update_vsyscall() only with generic time vDSO
      riscv: vdso: Untangle kconfig logic
      vdso: Drop kconfig GENERIC_VDSO_32
      vdso: Drop kconfig GENERIC_COMPAT_VDSO
      vdso: Drop kconfig GENERIC_VDSO_DATA_STORE
      vdso: Drop kconfig GENERIC_VDSO_TIME_NS
      vdso: Gate VDSO_GETRANDOM behind HAVE_GENERIC_VDSO

 arch/Kconfig                                      |  2 +-
 arch/arm/include/asm/vdso/vsyscall.h              |  2 --
 arch/arm/kernel/vdso.c                            | 10 +++------
 arch/arm/mm/Kconfig                               |  2 --
 arch/arm64/Kconfig                                |  3 ---
 arch/arm64/include/asm/vdso/compat_barrier.h      |  7 +++---
 arch/arm64/include/asm/vdso/compat_gettimeofday.h |  6 ++---
 arch/arm64/include/asm/vdso/gettimeofday.h        |  8 +++++++
 arch/arm64/kernel/vdso32/Makefile                 |  1 -
 arch/loongarch/Kconfig                            |  2 --
 arch/mips/Kconfig                                 |  1 -
 arch/powerpc/Kconfig                              |  2 --
 arch/riscv/Kconfig                                | 12 +++++-----
 arch/s390/Kconfig                                 |  2 --
 arch/x86/Kconfig                                  |  3 ---
 include/asm-generic/vdso/vsyscall.h               |  4 ----
 include/vdso/datapage.h                           |  9 +-------
 init/Kconfig                                      |  2 +-
 kernel/time/Makefile                              |  2 +-
 lib/vdso/Kconfig                                  | 25 +--------------------
 lib/vdso/Makefile                                 |  2 +-
 lib/vdso/datastore.c                              |  6 ++---
 lib/vdso/gettimeofday.c                           | 27 -----------------------
 tools/testing/selftests/pidfd/config              |  1 -
 24 files changed, 31 insertions(+), 110 deletions(-)
---
base-commit: 3cd1f6bc6aa056cfd32946f9ce0aa3eb3db180e8
change-id: 20250825-vdso-cleanups-fd6fbb32fc19

Best regards,
-- 
Thomas Weißschuh <thomas.weissschuh@linutronix.de>

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