bpf: Allow arena pointers in a by-value kfunc return

A kfunc may already return an arena pointer on its own, which the program
casts back into the arena address space to use. Let the members of a
by-value struct it returns be arena pointers as well, rather than scalars
only.

Such a member carries the arena type tag but not the address space
qualifier, so the program has to cast it itself. Handing it back as a
scalar costs nothing: an arena address has no provenance to track, and the
cast is confined to the caller's arena.

Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20260829061555.1697503-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

0 files changed, 0 insertions, 0 deletions