On Fri, 23 Aug 2024 17:08:30 +1000, Michael Ellerman wrote:

The non-standard "fast endian switch" syscall was added in 2008[1],
but was never widely used. It was disabled by default in 2017[2], and
there's no evidence it's ever been used since.

Remove it entirely.

A normal endian switch syscall was added in 2015[3].

[...]

Applied to powerpc/next.

[1/1] powerpc/64s: Remove the "fast endian switch" syscall
      https://git.kernel.org/powerpc/c/29dbb984496daa490f3c1181b734b538a6f7b534

cheers