[PATCH RFC bpf-next 2/3] selftests/bpf: Test inline_bpf_get_current_task() for LoongArch

[Tiezhu Yang]

Add the JITed inline instruction of bpf_get_current_task() for LoongArch
to pass the test case.

Before:

  $ sudo ./test_progs -t verifier_jit_inline
  #570/1   verifier_jit_inline/inline_bpf_get_current_task:SKIP
  #570     verifier_jit_inline:SKIP
  Summary: 1/0 PASSED, 1 SKIPPED, 0 FAILED

After:

  $ sudo ./test_progs -t verifier_jit_inline
  #570/1   verifier_jit_inline/inline_bpf_get_current_task:OK
  #570     verifier_jit_inline:OK
  Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED

Note that this test will pass only after the JIT inline support for
bpf_get_current_task is merged. While the JIT inlining is still in
the pipeline, adding the changes now will not introduce any build
regressions. It serves to define the expected JIT output for future
validation.

Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
---
 tools/testing/selftests/bpf/progs/verifier_jit_inline.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/bpf/progs/verifier_jit_inline.c b/tools/testing/selftests/bpf/progs/verifier_jit_inline.c
index 4ea254063646..913a1699e42b 100644
--- a/tools/testing/selftests/bpf/progs/verifier_jit_inline.c
+++ b/tools/testing/selftests/bpf/progs/verifier_jit_inline.c
@@ -10,6 +10,8 @@ __arch_x86_64
 __jited("	addq	%gs:{{.*}}, %rax")
 __arch_arm64
 __jited("	mrs	x7, SP_EL0")
+__arch_loongarch
+__jited("	move	$a5, $tp")
 int inline_bpf_get_current_task(void)
 {
 	bpf_get_current_task();
-- 
2.42.0