Re: [PATCH v2 0/9] vDSO: Respect COMPAT_32BIT_TIME

[Arnd Bergmann]

On Tue, Jun 30, 2026, at 09:38, Thomas Weißschuh wrote:
> If CONFIG_COMPAT_32BIT_TIME is disabled then the vDSO should not
> provide any 32-bit time related functionality. This is the intended
> effect of the kconfig option and also the fallback system calls would
> also not be implemented.
>
> Currently the kconfig option does not affect the gettimeofday() syscall,
> so also keep that in the vDSO.
>
> I also tried to introduce some helpers to avoid much of the ifdeffery,
> but due to the high variance in the architecture-specific glue code
> these would need to handle they ended up being worse than the current
> proposal.
>
> As a side-effect this will make the self-tests more reliable,
> as there is now always a matching syscall available for each vDSO function.
>
> clock_gettime_time64() was only introduced in v6.19, so libc implementations

   ^ clock_getres_time64()

> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>
> ---

Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>

once we have consensus on my patch 1/9 comment. Thanks for
continuing this work!

      Arnd