Re: [PATCH v5 1/4] x86/signal/64: Add a comment about sigcontext->fs and gs

[Ingo Molnar]

* Andy Lutomirski <luto@xxxxxxxxxx> wrote:

> +	 * If the kernel ever adds explicit fs, gs, fsbase, and gsbase
> +	 * save/restore, it will most likely need to be opt-in and use
> +	 * different context slots.

Btw., that's not necessarily true: it could also be made opt-out, and a 
modify_ldt() or any other cleanly identifiable legacy usage/signature that is 
associated with DOSEMU might trigger the opt-out automatically as well.

I.e. behaviorally it would still keep the ABI and modern default behavior could 
still be whatever we want to make it.

Thanks,

	Ingo