[PATCH v3 2/3] bpf: define bpf_jit_alloc_exec_limit for arm64 JIT

From
Lorenz Bauer <hidden>
Date
2021-10-14 14:26:12
Also in
bpf, linux-arm-kernel, lkml
Reply to
Lorenz Bauer, 2021-10-14
Expose the maximum amount of useable memory from the arm64 JIT.

Signed-off-by: Lorenz Bauer <redacted>
---
 arch/arm64/net/bpf_jit_comp.c | 5 +++++
 1 file changed, 5 insertions(+)
diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
index 41c23f474ea6..803e7773fa86 100644
--- a/arch/arm64/net/bpf_jit_comp.c
+++ b/arch/arm64/net/bpf_jit_comp.c
@@ -1136,6 +1136,11 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
 	return prog;
 }
 
+u64 bpf_jit_alloc_exec_limit(void)
+{
+	return BPF_JIT_REGION_SIZE;
+}
+
 void *bpf_jit_alloc_exec(unsigned long size)
 {
 	return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START,
-- 
2.30.2
Thread (6 messages) 6 messages, 3 authors, last reply 2021-10-21
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