On Tue, Dec 9, 2025 at 10:51 PM Saket Kumar Bhaskar [off-list ref] 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/ (local)

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/ (local)

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/ (local)

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(+)

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2.51.0