Re: [PATCH] x86/entry/ia32: Ensure s32 is sign extended to s64

[Florian Weimer]

* Richard Palethorpe:

> +#define __SC_COMPAT_CAST(t, a)						\
> +	(__typeof(__builtin_choose_expr(__TYPE_IS_L(t), 0, 0U)))	\
> +	(unsigned int)a

So this casts to int (triggering sign extension) if the type on the
64-bit kernel side is long?  But not in other cases (unsigned long,
pointer)?  Just double-checking.

Thanks,
Florian