If anybody wants to try their kernel with a different page size, for
example, using ppc64el with the 4k page size instead of 64k
- are there any packages in a standard installation that should be
recompiled?
No, there's no recompile needed, in the early aarch64 days there was
but we fixed that issue in binutils long ago and there's been a
recompile (probably dozens) since then and we've tested both 4K and
64K kernels in Fedora without issue.
- before recompiling anything, should we recompile any build tools,
such
as gcc, on the machine with 4k page size?
None required, although I think ADA or Fortran (don't remember which)
may have minor issues without a recompile.