[PATCH bpf-next v4 0/2] powerpc64/bpf: Inline helper in powerpc JIT

[Andrii Nakryiko]

On Tue, Dec 9, 2025 at 10:51 PM Saket Kumar Bhaskar <skb99 at linux.ibm.com> wrote:
>
> This series add support for internal only per-CPU instructions,
> inlines the bpf_get_smp_processor_id() and bpf_get_current_task()
> helper calls for powerpc BPF JIT.
>

This is marked for bpf-next tree, but I think this should actually go
through ppc64-specific tree, is that right?

> Changes since v3:
> * Added break after computing per cpu address so that the computed
>   address is not overwritten by src_reg as suggested by AI bot.
>
> v3: https://lore.kernel.org/all/cover.1764930425.git.skb99@linux.ibm.com/
>
> Changes since v2:
> * Collected Reviewed-by tag.
> * Inlined bpf_get_current_task/btf().
> * Fixed addressing of src_reg and BPF_REG_0. (Christophe)
> * Fixed condition for non smp case as suggested by Christophe.
>
> v2: https://lore.kernel.org/all/cover.1762422548.git.skb99@linux.ibm.com/
>
> Changes since v1:
> * Addressed Christophe's comments.
> * Inlined bpf_get_current_task() as well.
>
> v1: https://lore.kernel.org/all/20250311160955.825647-1-skb99@linux.ibm.com/
>
> Saket Kumar Bhaskar (2):
>   powerpc64/bpf: Support internal-only MOV instruction to resolve
>     per-CPU addrs
>   powerpc64/bpf: Inline bpf_get_smp_processor_id() and
>     bpf_get_current_task/_btf()
>
>  arch/powerpc/net/bpf_jit_comp.c   | 17 +++++++++++++++++
>  arch/powerpc/net/bpf_jit_comp64.c | 21 +++++++++++++++++++++
>  2 files changed, 38 insertions(+)
>
> --
> 2.51.0
>