[PATCH bpf-next v1] selftests/bpf: Enable timed may_goto tests for LoongArch

[Tiezhu Yang]

Enable stream_cond_break, may_goto_interaction, and verifier_may_goto_1
tests for LoongArch, aligning with recent architectural infrastructure
support (timed may_goto and arch_bpf_stack_walk JIT).

With this patch, the following tests passed on LoongArch:

  sudo ./test_progs -a stream_success/stream_cond_break
  sudo ./test_progs -a verifier_bpf_fastcall/may_goto_interaction
  sudo ./test_progs -a verifier_may_goto_1

Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
---
This patch is based on the latest bpf-next tree, it depends on the
following two patches:

LoongArch: BPF: Add timed may_goto support
https://lore.kernel.org/loongarch/20260804153938.16129-3-dongtai.guo@xxxxxxxxx/

LoongArch: BPF: Implement arch_bpf_stack_walk()
https://lore.kernel.org/loongarch/20260813045306.21571-1-yangtiezhu@xxxxxxxxxxx/

They are expected to be merged into v7.3-rc1 during the upcoming merge
window through the loongarch-next tree.

 tools/testing/selftests/bpf/progs/stream.c                | 1 +
 tools/testing/selftests/bpf/progs/verifier_bpf_fastcall.c | 1 +
 tools/testing/selftests/bpf/progs/verifier_may_goto_1.c   | 5 +++++
 3 files changed, 7 insertions(+)

diff --git a/tools/testing/selftests/bpf/progs/stream.c b/tools/testing/selftests/bpf/progs/stream.c
index 00a37933e411..8e8e1339dc74 100644
--- a/tools/testing/selftests/bpf/progs/stream.c
+++ b/tools/testing/selftests/bpf/progs/stream.c
@@ -65,6 +65,7 @@ __arch_x86_64
 __arch_arm64
 __arch_s390x
 __arch_riscv64
+__arch_loongarch
 __success __retval(0)
 __stderr("ERROR: Timeout detected for may_goto instruction")
 __stderr("CPU: {{[0-9]+}} UID: 0 PID: {{[0-9]+}} Comm: {{.*}}")
diff --git a/tools/testing/selftests/bpf/progs/verifier_bpf_fastcall.c b/tools/testing/selftests/bpf/progs/verifier_bpf_fastcall.c
index 4cfaa6b4ab40..328cf630210a 100644
--- a/tools/testing/selftests/bpf/progs/verifier_bpf_fastcall.c
+++ b/tools/testing/selftests/bpf/progs/verifier_bpf_fastcall.c
@@ -665,6 +665,7 @@ __naked void may_goto_interaction_x86_64(void)
 SEC("raw_tp")
 __arch_arm64
 __arch_riscv64
+__arch_loongarch
 __log_level(4)
 __msg("subprog 0 (may_goto_interaction) main {{.*}} stack 24")
 /* may_goto counter at -24 */
diff --git a/tools/testing/selftests/bpf/progs/verifier_may_goto_1.c b/tools/testing/selftests/bpf/progs/verifier_may_goto_1.c
index 0e211f030d0d..db7e30da234f 100644
--- a/tools/testing/selftests/bpf/progs/verifier_may_goto_1.c
+++ b/tools/testing/selftests/bpf/progs/verifier_may_goto_1.c
@@ -12,6 +12,7 @@ __arch_x86_64
 __arch_s390x
 __arch_arm64
 __arch_riscv64
+__arch_loongarch
 __xlated("0: r0 = 1")
 __xlated("1: exit")
 __success
@@ -33,6 +34,7 @@ __arch_x86_64
 __arch_s390x
 __arch_arm64
 __arch_riscv64
+__arch_loongarch
 __xlated("0: r0 = 1")
 __xlated("1: exit")
 __success
@@ -56,6 +58,7 @@ __arch_x86_64
 __arch_s390x
 __arch_arm64
 __arch_riscv64
+__arch_loongarch
 __xlated("0: r0 = 1")
 __xlated("1: exit")
 __success
@@ -83,6 +86,7 @@ __arch_x86_64
 __arch_s390x
 __arch_arm64
 __arch_riscv64
+__arch_loongarch
 __xlated("0: *(u64 *)(r10 -16) = 65535")
 __xlated("1: *(u64 *)(r10 -8) = 0")
 __xlated("2: r12 = *(u64 *)(r10 -16)")
@@ -120,6 +124,7 @@ __arch_x86_64
 __arch_s390x
 __arch_arm64
 __arch_riscv64
+__arch_loongarch
 __success
 __retval(0)
 __naked void timed_may_goto_preserves_regs(void)
-- 
2.42.0