Re: [PATCH v2 2/6] powerpc64/bpf: Support tailcalls with subprogs

Hari Bathini
2026-01-17T10:23:59Z

On 14/01/26 5:14 pm, adubey@linux.ibm.com wrote:
> From: Abhishek Dubey<adubey@linux.ibm.com>
>
> Enabling tailcalls with subprog combinations by referencing
> method. The actual tailcall count is always maintained in the
> tail_call_info variable present in the frame of main function
> (also called entry function). The tail_call_info variables in
> the frames of all other subprog contains reference to the
> tail_call_info present in frame of main function.

I would rephrase:

"The tail_call_info variables in the frames of all other subprog
contains reference to the tail_call_info present in frame of
main function."

to:

"The tail_call_info field in the stack frame of subprogs contains
reference to the tail_call_info field in the stack frame of main
BPF program."

- Hari