linux-kernel - [PATCH 0/9] vDSO: Provide clock_getres

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Message-Id: <20251223-vdso-compat-time32-v1-0-97ea7a06a543@linutronix.de>
Date: Tue, 23 Dec 2025 07:59:11 +0100
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Andy Lutomirski <luto@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, 
 Vincenzo Frascino <vincenzo.frascino@....com>, 
 Shuah Khan <shuah@...nel.org>, 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>, 
 Russell King <linux@...linux.org.uk>, 
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 Russell King <rmk+kernel@...linux.org.uk>, 
 linux-arm-kernel@...ts.infradead.org, linux-mips@...r.kernel.org, 
 Arnd Bergmann <arnd@...db.de>, linux-api@...r.kernel.org, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH 0/9] vDSO: Provide clock_getres_time64() where applicable

For consistency with __vdso_clock_gettime64() there should also be a
64-bit variant of clock_getres(). This will allow the extension of
CONFIG_COMPAT_32BIT_TIME to the vDSO and finally the removal of 32-bit
time types from the kernel and UAPI.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
Thomas Weißschuh (9):
      vdso: Add prototype for __vdso_clock_getres_time64()
      selftests: vDSO: vdso_config: Add configurations for clock_getres_time64()
      selftests: vDSO: vdso_test_abi: Use UAPI system call numbers
      selftests: vDSO: vdso_test_abi: Add test for clock_getres_time64()
      x86/vdso: Provide clock_getres_time64() for x86-32
      ARM: VDSO: also patch out __vdso_clock_getres() if unavailable
      ARM: VDSO: provide clock_getres_time64()
      arm64: vdso32: Provide clock_getres_time64()
      MIPS: vdso: Provide getres_time64() for 32-bit ABIs

 arch/arm/kernel/vdso.c                       |  2 +
 arch/arm/vdso/vdso.lds.S                     |  1 +
 arch/arm/vdso/vgettimeofday.c                |  6 +++
 arch/arm64/kernel/vdso32/vdso.lds.S          |  1 +
 arch/arm64/kernel/vdso32/vgettimeofday.c     |  6 +++
 arch/mips/vdso/vdso.lds.S                    |  1 +
 arch/mips/vdso/vgettimeofday.c               |  6 +++
 arch/x86/entry/vdso/vclock_gettime.c         |  8 ++++
 arch/x86/entry/vdso/vdso32/vdso32.lds.S      |  1 +
 include/vdso/gettime.h                       |  1 +
 tools/testing/selftests/vDSO/vdso_config.h   |  4 +-
 tools/testing/selftests/vDSO/vdso_test_abi.c | 55 +++++++++++++++++++++++++++-
 12 files changed, 89 insertions(+), 3 deletions(-)
---
base-commit: 15a11f3ffb629cbbf6efd272239c04a9eb3180e2
change-id: 20251120-vdso-compat-time32-f4684ff250ba

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