[PATCH 0/2] Fix two tailcall-related issues

[Haoran Jiang <jianghaoran@xxxxxxxxxx>]

1,Fix the jmp_offset calculation error in the emit_bpf_tail_call function.
2,Fix the issue that MAX_TAIL_CALL_CNT limit bypass in hybrid tailcall and BPF-to-BPF call

After applying this patch, testing results are as follows:

./test_progs --allow=tailcalls/tailcall_bpf2bpf_hierarchy_1
413/18  tailcalls/tailcall_bpf2bpf_hierarchy_1:OK
413     tailcalls:OK
Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED

./test_progs --allow=tailcalls/tailcall_bpf2bpf_hierarchy_2
413/23  tailcalls/tailcall_bpf2bpf_hierarchy_2:OK
413     tailcalls:OK
Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED

./test_progs --allow=tailcalls/tailcall_bpf2bpf_hierarchy_3
413/24  tailcalls/tailcall_bpf2bpf_hierarchy_3:OK
413     tailcalls:OK
Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED

Haoran Jiang (2):
  LoongArch: BPF: Optimize the calculation method of jmp_offset in the
    emit_bpf_tail_call function
  LoongArch: BPF: Fix tailcall hierarchy

 arch/loongarch/net/bpf_jit.c | 140 ++++++++++++++++++++---------------
 1 file changed, 80 insertions(+), 60 deletions(-)

-- 
2.43.0