Re: [PATCH] x86/apic: reduce cache line misses in __x2apic_send_IPI_mask()

[Eric Dumazet]

On Thu, Oct 7, 2021 at 7:07 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
>
> On Thu, Oct 07, 2021 at 07:04:09AM -0700, Eric Dumazet wrote:
> > Good idea, I will try this.
> > Hopefully nr_cpu_ids is populated there ?
>
> Lets hope :-), I'm always terminally lost in early bringup. I figure it
> should be painfully obvious if it goes wrong.

The answer seems to be yes on hosts I tested.