Re: [PATCH bpf-next v1 13/14] selftests/bpf: Exercise arena arguments on every capable JIT

["Kumar Kartikeya Dwivedi" <memxor@gmail.com>]

On Wed Aug 26, 2026 at 10:50 PM CEST, Ihor Solodrai wrote:
> On 2026-08-21 4:35 p.m., Kumar Kartikeya Dwivedi wrote:
>> The arena kfunc runtime tests are restricted to x86-64 and arm64, so new
>> JIT implementations can compile without exercising rebasing, nullable
>> arguments, five-register calls, or the verifier capability gate.
>>
>> Run those tests on RISC-V, s390, LoongArch, and PowerPC64 as well. Teach
>> test_loader about PowerPC64 so it can select the newly annotated programs.
>>
>> Enable the struct_ops arena tests on RISC-V, s390, and LoongArch, whose
>> indirect trampolines now implement the separate reverse-conversion path.
>> PowerPC64 remains covered only for kfunc arguments because it does not
>> advertise the struct_ops capability.
>
> I'd avoid adding these unless you actually ran it.
>
> Have you tried non-x86 / arm64 arches at least in emulation?
>

No, I'm relying on individual JIT maintainers to green flag this set from their
side. I think that should suffice. It would be best to do the conversion all at
once, and we don't really have a time constraint, so can wait for all JIT folks
to chip in with their reviews and tags before we land this.

>>
>> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
>> ---
>>   .../bpf/prog_tests/test_struct_ops_arena.c    | 16 ++++++---
>>   .../testing/selftests/bpf/progs/arena_kfunc.c | 36 +++++++++++++++++++
>>   tools/testing/selftests/bpf/progs/bpf_misc.h  |  1 +
>>   tools/testing/selftests/bpf/test_loader.c     |  5 +++
>>   4 files changed, 53 insertions(+), 5 deletions(-)
>>
>> [...]