[PATCH bpf-next v2] riscv, bpf: Add kfunc support for RV64

[Björn Töpel]

Pu Lehui <pulehui at huaweicloud.com> writes:

> From: Pu Lehui <pulehui at huawei.com>
>
> As another important missing piece of RV64 JIT, kfunc allow bpf programs
> call kernel functions. For now, RV64 is sufficient to enable it.

Thanks Lehui!

Maybe we can reword/massage the commit message a bit? What do you think
about something like:

"Now that the BPF trampoline is supported by RISC-V, it is possible to
use BPF programs with kfunc calls.

Note that the trampoline functionality is only supported by RV64.

Add bpf_jit_supports_kfunc_call() to the 64-bit JIT."


Björn