Re: kern/54994: Critical bug in uarea_poolpage_alloc() for archs with __HAVE_CPU_UAREA_ROUTINES

[Jason Thorpe <thorpej%me.com@localhost>]

> On Feb 26, 2020, at 6:17 AM, Rin Okuyama <rokuyama.rk%gmail.com@localhost> wrote:
> 
> So, all ports including mips64 do not need CPU_UAREA_ROUTINES anymore,
> as far as I can see. Can we try turning off __HAVE_CPU_UAREA_ROUTINES to
> see what happens, or should we be more careful?

Platforms never "needed" __HAVE_CPU_UAREA_ROUTINES ... we didn't always have them.

I think we should keep them ... they are a useful optimization when they can do their work effectively.  However, we need to ensure that when they can't meet their constraints that the fallback still works.

-- thorpej