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bpf: Define bpf_jit_alloc_exec_limit for arm64 JIT
author
Lorenz Bauer
<lmb@cloudflare.com>
Thu, 14 Oct 2021 14:25:52 +0000
(15:25 +0100)
committer
Alexei Starovoitov
<ast@kernel.org>
Sat, 23 Oct 2021 00:23:53 +0000
(17:23 -0700)
Expose the maximum amount of useable memory from the arm64 JIT.
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link:
https://lore.kernel.org/bpf/20211014142554.53120-3-lmb@cloudflare.com
arch/arm64/net/bpf_jit_comp.c
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diff --git
a/arch/arm64/net/bpf_jit_comp.c
b/arch/arm64/net/bpf_jit_comp.c
index
41c23f4
..
803e777
100644
(file)
--- a/
arch/arm64/net/bpf_jit_comp.c
+++ b/
arch/arm64/net/bpf_jit_comp.c
@@
-1136,6
+1136,11
@@
out:
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,