Commit df8665c3 authored Oct 14, 2021 by Lorenz Bauer Committed by Greg Kroah-Hartman Nov 17, 2021

bpf: Define bpf_jit_alloc_exec_limit for arm64 JIT



[ 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>

parent 8dd688ba

arch/arm64/net/bpf_jit_comp.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -996,6 +996,11 @@ 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,