linux-kernel - [RFC PATCH 0/2] LoongArch: BPF: Add more feature for trampoline

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Message-ID: <20250821140122.29752-1-yangtiezhu@loongson.cn>
Date: Thu, 21 Aug 2025 22:01:20 +0800
From: Tiezhu Yang <yangtiezhu@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>,
	Hengqi Chen <hengqi.chen@...il.com>
Cc: loongarch@...ts.linux.dev,
	bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [RFC PATCH 0/2] LoongArch: BPF: Add more feature for trampoline

This is a RFC series, based on Hengqi's series [1]:

  LoongArch: Fix BPF trampoline related issues

The initial aim is to pass the following related testcase:

  sudo ./test_progs -a tracing_struct/struct_args
  sudo ./test_progs -a tracing_struct/struct_many_args
  sudo ./test_progs -a fentry_test/fentry_many_args
  sudo ./test_progs -a fexit_test/fexit_many_args

but there exist some other problems now, maybe it is related with
the following failed testcase:

  sudo ./test_progs -t module_attach

so just RFC for now, I will address the comments and send a formal
series once there are no problems.

[1] https://lore.kernel.org/loongarch/20250821091003.404870-1-hengqi.chen@gmail.com/

Tiezhu Yang (2):
  LoongArch: BPF: Add struct arguments support for trampoline
  LoongArch: BPF: Add 12 function arguments support for trampoline

 arch/loongarch/net/bpf_jit.c | 84 ++++++++++++++++++++++++++----------
 1 file changed, 61 insertions(+), 23 deletions(-)

-- 
2.42.0