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

* [PATCH v3 2/3] bpf: define bpf_jit_alloc_exec_limit for arm64 JIT
       [not found] <20211014142554.53120-1-lmb@cloudflare.com>
@ 2021-10-14 14:25 ` Lorenz Bauer
  0 siblings, 0 replies; only message in thread
From: Lorenz Bauer @ 2021-10-14 14:25 UTC (permalink / raw)
  To: nicolas.dichtel, luke.r.nels, Daniel Borkmann, Alexei Starovoitov,
	Zi Shen Lim, Catalin Marinas, Will Deacon, Andrii Nakryiko
  Cc: kernel-team, Lorenz Bauer, netdev, bpf, linux-arm-kernel,
	linux-kernel

Expose the maximum amount of useable memory from the arm64 JIT.

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
---
 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


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

^ permalink raw reply related	[flat|nested] only message in thread