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[bpf-next] LoongArch: BPF: Support mixing bpf2bpf and tailcalls

Message ID 20230218105317.4139666-1-hengqi.chen@gmail.com (mailing list archive)
State Accepted
Delegated to: BPF
Headers show
Series [bpf-next] LoongArch: BPF: Support mixing bpf2bpf and tailcalls | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for bpf-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Single patches do not need cover letters
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 13 maintainers not CCed: john.fastabend@gmail.com daniel@iogearbox.net andrii@kernel.org sdf@google.com jolsa@kernel.org chenhuacai@kernel.org haoluo@google.com song@kernel.org martin.lau@linux.dev kernel@xen0n.name yhs@fb.com ast@kernel.org kpsingh@kernel.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 9 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
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bpf/vmtest-bpf-next-PR fail PR summary
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Commit Message

Hengqi Chen Feb. 18, 2023, 10:53 a.m. UTC 
The current implementation already allow such mixing.
Let's enable it in JIT.

Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
---
 arch/loongarch/net/bpf_jit.c | 6 ++++++
 1 file changed, 6 insertions(+)

--
2.31.1
diff mbox series

Patch

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 @@  struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)

 	return prog;
 }
+
+/* Indicate the JIT backend supports mixing bpf2bpf and tailcalls. */
+bool bpf_jit_supports_subprog_tailcalls(void)
+{
+	return true;
+}