Re: [PATCH bpf-next v2 2/2] bpf,riscv: Implement bpf_addr_space_cast instruction

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On 2024/3/26 4:31, Björn Töpel wrote:
Puranjay Mohan <puranjay12@xxxxxxxxx> writes:

Is there a separate CI for RISCV related stuff? is it public?

I would be interested in adding RISC-V support in
https://github.com/kernel-patches/bpf
Is someone already working on this?

+Cc Manu/Mykola/Nico who's doing all of the awesome BPF CI work at Meta,
and can keep me honest. ;-)

I did some early hacks for to add RISC-V support for the BPF CI, but
haven't had time to work on it recently. :-(

   [1] https://github.com/libbpf/ci/pull/87
   [2] https://github.com/kernel-patches/vmtest/pull/194

I've been talking recently to Lehui about it as well.

Two major things are missing:

1. Cross-compilation support (expand on [1])
2. Align the rootfs with what the other arch are using, to run the tests
    on Qemu/TCG (and proper HW at some point!). RISC-V does not have
    Debian Stable support, and would probably need Ubuntu or Debian Sid
    snapshop. Manu outlines some issues here:
    https://github.com/libbpf/ci/pull/83

yeah, the current issue below is fixed and I think we can move forward.

https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=443574b033876c85a35de4c65c14f7fe092222b2


Having to manually run BPF tests ("non-official RISC-V BPF CI") is a
mess!


Björn





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