| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 047/355] bpf: Define bpf_jit_alloc_exec_limit for arm64 JIT | Date | Mon, 15 Nov 2021 17:59:31 +0100 |
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From: Lorenz Bauer <lmb@cloudflare.com>
[ Upstream commit 5d63ae908242f028bd10860cba98450d11c079b8 ]
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 Signed-off-by: Sasha Levin <sashal@kernel.org> --- 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 afc7d41347f73..a343677837c77 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -996,6 +996,11 @@ 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, -- 2.33.0
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