Re: [PATCH bpf-next 03/10] bpf: Support stack arguments for bpf functions

Alexei Starovoitov
2026-04-06T04:51:50Z

On Sun, Apr 5, 2026 at 9:29 PM Yonghong Song <yonghong.song@linux.dev> wrote:
>
>
> >
> > For 6th argument JIT emits these two stx/ldx as moves to/from x86's r9.
>
> For stx case, we should move the bottom stack value (6th argument)
> to r9 and pop the bottom stack slot (8 bytes).

That doesn't sound right.
Passing 6th argument should not involve stack manipulation at all.
No push and no pop.