Re: [PATCH v3 12/26] compat_ioctl: move more drivers to compat_ptr_ioctl

[Marc Gonzalez]

On 16/04/2019 22:25, Arnd Bergmann wrote:

> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
> 
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390

"will /never/ run" ?