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Message-Id: <20210924095542.33697-2-lmb@cloudflare.com>
Date: Fri, 24 Sep 2021 10:55:39 +0100
From: Lorenz Bauer <lmb@...udflare.com>
To: Luke Nelson <luke.r.nels@...il.com>, Xi Wang <xi.wang@...il.com>,
Björn Töpel <bjorn@...nel.org>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Andrii Nakryiko <andrii@...nel.org>
Cc: kernel-team@...udflare.com, Lorenz Bauer <lmb@...udflare.com>,
netdev@...r.kernel.org, bpf@...r.kernel.org,
linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH bpf-next 1/4] bpf: define bpf_jit_alloc_exec_limit for riscv JIT
Expose the maximum amount of useable memory from the sparcv JIT.
Signed-off-by: Lorenz Bauer <lmb@...udflare.com>
---
arch/riscv/net/bpf_jit_core.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c
index fed86f42dfbe..0fee2cbaaf53 100644
--- a/arch/riscv/net/bpf_jit_core.c
+++ b/arch/riscv/net/bpf_jit_core.c
@@ -166,6 +166,11 @@ 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
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