Re: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures

[James Bottomley]

On Tue, 2017-01-31 at 16:26 -0800, Andrew Morton wrote:
> On Sat, 28 Jan 2017 12:13:10 +0100 Helge Deller <deller@xxxxxx>
> wrote:
> 
> > The prctl(PR_GET_ENDIAN) syscall was added to Kernel 2.6.18, but
> > implemented for PowerPC only. This trivial patch adds support for 
> > this syscall for all other architectures.
> 
> Seems reasonable.  I guess.  Why is this needed?

I don't think it is other than for PPC.  If you're not variable endian
(which is only PPC to date), then you should know a priori what endian
you are from the #defines in userspace.

James