[PATCH v8 0/6] elf: THP-aware load segment alignment

[Wilco Dijkstra]

Hi HJ,

>> Tunables are almost for free, it's just checking a global
>> variable, not a system call.
> 
> The end-user still needs to set the tunable.  It is beyond
> the programmer's control.  With a property bit, the developer
> can set it on the binary.   If needed, it can be set in one of
> crt files.

The goal is to enable this by default on modern 64-bit targets given the extra
alignment is not harmful (only minor reduction of ALSR bits when PMD size is 2MB).

All this configurability is insane - nobody is ever going to figure out which settings are
available, how to modify each setting, let alone which combination gives the best
performance on every application on a particular machine... Users just want stuff to
work well out of the box. Call them lazy if you like.

Cheers,
Wilco