From: Andreas Larsson <andreas@gaisler.com>
To: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>,
"Andy Lutomirski" <luto@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Vincenzo Frascino" <vincenzo.frascino@arm.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"David S. Miller" <davem@davemloft.net>,
"Nick Alcock" <nick.alcock@oracle.com>,
"John Stultz" <jstultz@google.com>,
"Stephen Boyd" <sboyd@kernel.org>,
"John Paul Adrian Glaubitz" <glaubitz@physik.fu-berlin.de>,
"Shuah Khan" <shuah@kernel.org>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will@kernel.org>, "Theodore Ts'o" <tytso@mit.edu>,
"Jason A. Donenfeld" <Jason@zx2c4.com>,
"Russell King" <linux@armlinux.org.uk>,
"Madhavan Srinivasan" <maddy@linux.ibm.com>,
"Michael Ellerman" <mpe@ellerman.id.au>,
"Nicholas Piggin" <npiggin@gmail.com>,
"Christophe Leroy" <christophe.leroy@csgroup.eu>,
"Huacai Chen" <chenhuacai@kernel.org>,
"WANG Xuerui" <kernel@xen0n.name>,
"Thomas Bogendoerfer" <tsbogend@alpha.franken.de>,
"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>,
"Nagarathnam Muthusamy" <nagarathnam.muthusamy@oracle.com>,
"Shannon Nelson" <sln@onemain.com>
Cc: linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org,
linux-kselftest@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev,
linux-mips@vger.kernel.org, linux-s390@vger.kernel.org,
Arnd Bergmann <arnd@kernel.org>
Subject: Re: [PATCH v3 00/36] sparc64: vdso: Switch to the generic vDSO library
Date: Fri, 26 Sep 2025 15:53:52 +0200 [thread overview]
Message-ID: <76d9171c-4a74-499e-a598-ec51fdfa4e94@gaisler.com> (raw)
In-Reply-To: <20250917-vdso-sparc64-generic-2-v3-0-3679b1bc8ee8@linutronix.de>
On 2025-09-17 16:00, Thomas Weißschuh wrote:
> The generic vDSO provides a lot common functionality shared between
> different architectures. SPARC is the last architecture not using it,
> preventing some necessary code cleanup.
>
> Make use of the generic infrastructure.
>
> Follow-up to and replacement for Arnd's SPARC vDSO removal patches:
> https://lore.kernel.org/lkml/20250707144726.4008707-1-arnd@kernel.org/
>
> Tested on a Niagara T4 and QEMU.
>
> This has a semantic conflict with my series "vdso: Reject absolute
> relocations during build". The last patch of this series expects all users
> of the generic vDSO library to use the vdsocheck tool.
> This is not the case (yet) for SPARC64. I do have the patches for the
> integration, the specifics will depend on which series is applied first.
>
> Based on tip/timers/vdso.
>
> [0] https://lore.kernel.org/lkml/20250812-vdso-absolute-reloc-v4-0-61a8b615e5ec@linutronix.de/
>
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
> ---
> Changes in v3:
> - Allocate vDSO data pages dynamically (and lots of preparations for that)
> - Drop clock_getres()
> - Fix 32bit clock_gettime() syscall fallback
> - Link to v2: https://lore.kernel.org/r/20250815-vdso-sparc64-generic-2-v2-0-b5ff80672347@linutronix.de
>
> Changes in v2:
> - Rebase on v6.17-rc1
> - Drop RFC state
> - Fix typo in commit message
> - Drop duplicate 'select GENERIC_TIME_VSYSCALL'
> - Merge "sparc64: time: Remove architecture-specific clocksource data" into the
> main conversion patch. It violated the check in __clocksource_register_scale()
> - Link to v1: https://lore.kernel.org/r/20250724-vdso-sparc64-generic-2-v1-0-e376a3bd24d1@linutronix.de
>
> ---
> Arnd Bergmann (1):
> clocksource: remove ARCH_CLOCKSOURCE_DATA
>
> Thomas Weißschuh (35):
> selftests: vDSO: vdso_test_correctness: Handle different tv_usec types
> arm64: vDSO: getrandom: Explicitly include asm/alternative.h
> arm64: vDSO: gettimeofday: Explicitly include vdso/clocksource.h
> arm64: vDSO: compat_gettimeofday: Add explicit includes
> ARM: vdso: gettimeofday: Add explicit includes
> powerpc/vdso/gettimeofday: Explicitly include vdso/time32.h
> powerpc/vdso: Explicitly include asm/cputable.h and asm/feature-fixups.h
> LoongArch: vDSO: Explicitly include asm/vdso/vdso.h
> MIPS: vdso: Add include guard to asm/vdso/vdso.h
> MIPS: vdso: Explicitly include asm/vdso/vdso.h
> random: vDSO: Add explicit includes
> vdso/gettimeofday: Add explicit includes
> vdso/helpers: Explicitly include vdso/processor.h
> vdso/datapage: Remove inclusion of gettimeofday.h
> vdso/datapage: Trim down unnecessary includes
> random: vDSO: trim vDSO includes
> random: vDSO: remove ifdeffery
> random: vDSO: split out datapage update into helper functions
> random: vDSO: only access vDSO datapage after random_init()
> s390/time: Set up vDSO datapage later
> vdso/datastore: Reduce scope of some variables in vvar_fault()
> vdso/datastore: Drop inclusion of linux/mmap_lock.h
> vdso/datastore: Map pages through struct page
> vdso/datastore: Allocate data pages dynamically
> sparc64: vdso: Link with -z noexecstack
> sparc64: vdso: Remove obsolete "fake section table" reservation
> sparc64: vdso: Replace code patching with runtime conditional
> sparc64: vdso: Move hardware counter read into header
> sparc64: vdso: Move syscall fallbacks into header
> sparc64: vdso: Introduce vdso/processor.h
> sparc64: vdso: Switch to the generic vDSO library
> sparc64: vdso2c: Drop sym_vvar_start handling
> sparc64: vdso2c: Remove symbol handling
> sparc64: vdso: Implement clock_gettime64()
> clocksource: drop include of asm/clocksource.h from linux/clocksource.h
>
> arch/arm/include/asm/vdso/gettimeofday.h | 2 +
> arch/arm64/include/asm/vdso/compat_gettimeofday.h | 3 +
> arch/arm64/include/asm/vdso/gettimeofday.h | 2 +
> arch/arm64/kernel/vdso/vgetrandom.c | 2 +
> arch/loongarch/kernel/process.c | 1 +
> arch/loongarch/kernel/vdso.c | 1 +
> arch/mips/include/asm/vdso/vdso.h | 5 +
> arch/mips/kernel/vdso.c | 1 +
> arch/powerpc/include/asm/vdso/gettimeofday.h | 1 +
> arch/powerpc/include/asm/vdso/processor.h | 3 +
> arch/s390/kernel/time.c | 4 +-
> arch/sparc/Kconfig | 3 +-
> arch/sparc/include/asm/clocksource.h | 9 -
> arch/sparc/include/asm/processor.h | 3 +
> arch/sparc/include/asm/processor_32.h | 2 -
> arch/sparc/include/asm/processor_64.h | 25 --
> arch/sparc/include/asm/vdso.h | 2 -
> arch/sparc/include/asm/vdso/clocksource.h | 10 +
> arch/sparc/include/asm/vdso/gettimeofday.h | 184 ++++++++++
> arch/sparc/include/asm/vdso/processor.h | 41 +++
> arch/sparc/include/asm/vdso/vsyscall.h | 10 +
> arch/sparc/include/asm/vvar.h | 75 ----
> arch/sparc/kernel/Makefile | 1 -
> arch/sparc/kernel/time_64.c | 6 +-
> arch/sparc/kernel/vdso.c | 69 ----
> arch/sparc/vdso/Makefile | 8 +-
> arch/sparc/vdso/vclock_gettime.c | 380 ++-------------------
> arch/sparc/vdso/vdso-layout.lds.S | 26 +-
> arch/sparc/vdso/vdso.lds.S | 2 -
> arch/sparc/vdso/vdso2c.c | 24 --
> arch/sparc/vdso/vdso2c.h | 45 +--
> arch/sparc/vdso/vdso32/vdso32.lds.S | 4 +-
> arch/sparc/vdso/vma.c | 274 +--------------
> drivers/char/random.c | 75 ++--
> include/linux/clocksource.h | 8 -
> include/linux/vdso_datastore.h | 6 +
> include/vdso/datapage.h | 23 +-
> include/vdso/helpers.h | 1 +
> init/main.c | 2 +
> kernel/time/Kconfig | 4 -
> lib/vdso/datastore.c | 73 ++--
> lib/vdso/getrandom.c | 3 +
> lib/vdso/gettimeofday.c | 17 +
> .../testing/selftests/vDSO/vdso_test_correctness.c | 8 +-
> 44 files changed, 451 insertions(+), 997 deletions(-)
> ---
> base-commit: 5f84f6004e298bd41c9e4ed45c18447954b1dce6
> change-id: 20250722-vdso-sparc64-generic-2-25f2e058e92c
Tested-by: Andreas Larsson <andreas@gaisler.com>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Acked-by: Andreas Larsson <andreas@gaisler.com> # arch/sparc
Thanks,
Andreas
prev parent reply other threads:[~2025-09-26 13:54 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-17 14:00 [PATCH v3 00/36] sparc64: vdso: Switch to the generic vDSO library Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 01/36] selftests: vDSO: vdso_test_correctness: Handle different tv_usec types Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 02/36] arm64: vDSO: getrandom: Explicitly include asm/alternative.h Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 03/36] arm64: vDSO: gettimeofday: Explicitly include vdso/clocksource.h Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 04/36] arm64: vDSO: compat_gettimeofday: Add explicit includes Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 05/36] ARM: vdso: gettimeofday: " Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 06/36] powerpc/vdso/gettimeofday: Explicitly include vdso/time32.h Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 07/36] powerpc/vdso: Explicitly include asm/cputable.h and asm/feature-fixups.h Thomas Weißschuh
2025-09-17 14:41 ` Christophe Leroy
2025-09-17 15:21 ` Thomas Weißschuh
2025-09-17 15:23 ` Christophe Leroy
2025-09-22 2:44 ` Michael Ellerman
2025-09-17 14:00 ` [PATCH v3 08/36] LoongArch: vDSO: Explicitly include asm/vdso/vdso.h Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 09/36] MIPS: vdso: Add include guard to asm/vdso/vdso.h Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 10/36] MIPS: vdso: Explicitly include asm/vdso/vdso.h Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 11/36] random: vDSO: Add explicit includes Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 12/36] vdso/gettimeofday: " Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 13/36] vdso/helpers: Explicitly include vdso/processor.h Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 14/36] vdso/datapage: Remove inclusion of gettimeofday.h Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 15/36] vdso/datapage: Trim down unnecessary includes Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 16/36] random: vDSO: trim vDSO includes Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 17/36] random: vDSO: remove ifdeffery Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 18/36] random: vDSO: split out datapage update into helper functions Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 19/36] random: vDSO: only access vDSO datapage after random_init() Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 20/36] s390/time: Set up vDSO datapage later Thomas Weißschuh
2025-09-17 15:12 ` Heiko Carstens
2025-09-17 14:00 ` [PATCH v3 21/36] vdso/datastore: Reduce scope of some variables in vvar_fault() Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 22/36] vdso/datastore: Drop inclusion of linux/mmap_lock.h Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 23/36] vdso/datastore: Map pages through struct page Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 24/36] vdso/datastore: Allocate data pages dynamically Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 25/36] sparc64: vdso: Link with -z noexecstack Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 26/36] sparc64: vdso: Remove obsolete "fake section table" reservation Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 27/36] sparc64: vdso: Replace code patching with runtime conditional Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 28/36] sparc64: vdso: Move hardware counter read into header Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 29/36] sparc64: vdso: Move syscall fallbacks " Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 30/36] sparc64: vdso: Introduce vdso/processor.h Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 31/36] sparc64: vdso: Switch to the generic vDSO library Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 32/36] sparc64: vdso2c: Drop sym_vvar_start handling Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 33/36] sparc64: vdso2c: Remove symbol handling Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 34/36] sparc64: vdso: Implement clock_gettime64() Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 35/36] clocksource: remove ARCH_CLOCKSOURCE_DATA Thomas Weißschuh
2025-09-17 14:00 ` [PATCH v3 36/36] clocksource: drop include of asm/clocksource.h from linux/clocksource.h Thomas Weißschuh
2025-09-20 13:24 ` [PATCH v3 00/36] sparc64: vdso: Switch to the generic vDSO library John Paul Adrian Glaubitz
2025-09-20 14:37 ` Thomas Weißschuh
2025-09-21 5:05 ` John Paul Adrian Glaubitz
2025-09-24 7:40 ` John Paul Adrian Glaubitz
2025-09-24 8:07 ` Thomas Weißschuh
2025-09-24 8:28 ` John Paul Adrian Glaubitz
2025-09-24 11:35 ` Thomas Weißschuh
2025-09-26 13:53 ` Andreas Larsson [this message]
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