From: Hengqi Chen <hengqi.chen@gmail.com>
Date: Sat, 18 Feb 2023 10:53:17 +0000 (+0000)
Subject: LoongArch: BPF: Support mixing bpf2bpf and tailcalls
X-Git-Tag: microblaze-v6.6~366^2~413^2~50
X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=bb035ef0cc91e115faa80187ac8886a7f1914d06;p=linux-2.6-microblaze.git

LoongArch: BPF: Support mixing bpf2bpf and tailcalls

The current implementation already allow such mixing.
Let's enable it in JIT.

Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Link: https://lore.kernel.org/r/20230218105317.4139666-1-hengqi.chen@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---

diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c
index 288003a9f0ca..e70c846efaa1 100644
--- a/arch/loongarch/net/bpf_jit.c
+++ b/arch/loongarch/net/bpf_jit.c
@@ -1248,3 +1248,9 @@ out:
 
 	return prog;
 }
+
+/* Indicate the JIT backend supports mixing bpf2bpf and tailcalls. */
+bool bpf_jit_supports_subprog_tailcalls(void)
+{
+	return true;
+}