Re: [PATCH bpf-next v2 0/7] bpf, arm64: __arena kfunc and struct_ops arguments

Hello:

This series was applied to bpf/bpf-next.git (master)
by Kumar Kartikeya Dwivedi <[email protected]>:

On Thu, 13 Aug 2026 12:03:47 -0700 you wrote:
> The x86-64 JIT recently gained support for the __arena and
> __arena__nullable argument suffixes on kfuncs and struct_ops stubs. This
> adds the arm64 side and flips bpf_jit_supports_arena_args() on, so the
> verifier stops rejecting these programs on arm64.
> 
> Patch 1 is an independent fix. save_args() reads stack-passed arguments
> at FP + 32, which only holds when the trampoline is entered through the
> fentry call and two frame records are pushed. A struct_ops trampoline is
> entered via blr and pushes one frame fewer, so its stack arguments start
> at FP + 16 and every one of them was read two slots off. No struct_ops
> member passed arguments on the stack until the test added by commit
> 2d4de9a493a0, which is why this went unnoticed. It carries a Fixes tag
> and can be taken separately; note that the test covering it only runs on
> arm64 once the rest of this series lands.
> 
> [...]

Here is the summary with links:
  - [bpf-next,v2,1/7] bpf, arm64: Fix stack-passed arguments for indirect trampolines
    https://git.kernel.org/bpf/bpf-next/c/50de1c47a41d
  - [bpf-next,v2,2/7] arm64: insn: Add encoder for ADD/SUB (extended register)
    https://git.kernel.org/bpf/bpf-next/c/f4adb983ef3d
  - [bpf-next,v2,3/7] bpf, arm64: JIT __arena kfunc argument rebasing
    https://git.kernel.org/bpf/bpf-next/c/760cb40cfd6a
  - [bpf-next,v2,4/7] bpf, arm64: Convert struct_ops arena arguments in the trampoline
    https://git.kernel.org/bpf/bpf-next/c/bb5bad6a78b6
  - [bpf-next,v2,5/7] selftests/bpf: Add arm64 JIT-sequence tests for __arena kfunc arguments
    https://git.kernel.org/bpf/bpf-next/c/1c5bc60f957d
  - [bpf-next,v2,6/7] selftests/bpf: Enable __arena argument tests on arm64
    https://git.kernel.org/bpf/bpf-next/c/05a3575f225c
  - [bpf-next,v2,7/7] selftests/bpf: Test a multi-slot argument before a struct_ops arena argument
    https://git.kernel.org/bpf/bpf-next/c/197d34b16943

You are awesome, thank you!
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