linux-kernel - [PATCH 00/11] vdso: Various cleanups

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Message-Id: <20250826-vdso-cleanups-v1-0-d9b65750e49f@linutronix.de>
Date: Tue, 26 Aug 2025 08:17:03 +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 00/11] vdso: Various cleanups

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@...utronix.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@...utronix.de>