Re: [PATCH V2 00/19] timekeeping: Handle potential multiplication overflow

[Arnd Bergmann]

On Mon, Mar 25, 2024, at 07:40, Adrian Hunter wrote:
>
> Extend the facility also to VDSO, dependent on new config option
> GENERIC_VDSO_OVERFLOW_PROTECT which is selected by x86 only, so other
> architectures are not affected. The result is a calculation that has
> similar performance as before. Most machines showed performance benefit,
> except Skylake-based hardware such as Intel Kaby Lake which was seen <1%
> worse.

I've read through the series, and this pretty much all makes sense,
nice work!

There are a few patches that just rearrange the local variable
declarations to save a few lines, and I don't see those as an
improvement, but they also don't hurt aside from distracting
slightly from the real changes.

     Arnd