Re: [PATCH 8/9] arm64: vdso32: Provide clock_getres_time64()

Will Deacon
2026-01-05T20:55:17Z

On Tue, Dec 23, 2025 at 07:59:19AM +0100, Thomas Weißschuh wrote:
> 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@linutronix.de>
> ---
> arch/arm64/kernel/vdso32/vdso.lds.S | 1 +
> arch/arm64/kernel/vdso32/vgettimeofday.c | 6 ++++++
> 2 files changed, 7 insertions(+)
>
> diff --git a/arch/arm64/kernel/vdso32/vdso.lds.S b/arch/arm64/kernel/vdso32/vdso.lds.S
> index e02b27487ce8..c374fb0146f3 100644
> --- a/arch/arm64/kernel/vdso32/vdso.lds.S
> +++ b/arch/arm64/kernel/vdso32/vdso.lds.S
> @@ -86,6 +86,7 @@ VERSION
> __vdso_gettimeofday;
> __vdso_clock_getres;
> __vdso_clock_gettime64;
> + __vdso_clock_getres_time64;
> local: *;
> };
> }
> diff --git a/arch/arm64/kernel/vdso32/vgettimeofday.c b/arch/arm64/kernel/vdso32/vgettimeofday.c
> index 29b4d8f61e39..d7b39b0a9668 100644
> --- a/arch/arm64/kernel/vdso32/vgettimeofday.c
> +++ b/arch/arm64/kernel/vdso32/vgettimeofday.c
> @@ -32,6 +32,12 @@ int __vdso_clock_getres(clockid_t clock_id,
> return __cvdso_clock_getres_time32(clock_id, res);
> }
>
> +int __vdso_clock_getres_time64(clockid_t clock_id,
> + struct __kernel_timespec *res)
> +{
> + return __cvdso_clock_getres(clock_id, res);
> +}
> +
> /* Avoid unresolved references emitted by GCC */
>
> void __aeabi_unwind_cpp_pr0(void)

Acked-by: Will Deacon <will@kernel.org>

Please merge this along with the 32-bit Arm change, as it doesn't make
sense otherwise.

Will