From: Lorenz Bauer <lmb@cloudflare.com>
To: "Luke Nelson" <luke.r.nels@gmail.com>,
"Xi Wang" <xi.wang@gmail.com>, "Björn Töpel" <bjorn@kernel.org>,
"Paul Walmsley" <paul.walmsley@sifive.com>,
"Palmer Dabbelt" <palmer@dabbelt.com>,
"Albert Ou" <aou@eecs.berkeley.edu>,
"Alexei Starovoitov" <ast@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Andrii Nakryiko" <andrii@kernel.org>
Cc: kernel-team@cloudflare.com, Lorenz Bauer <lmb@cloudflare.com>,
netdev@vger.kernel.org, bpf@vger.kernel.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH bpf-next 1/4] bpf: define bpf_jit_alloc_exec_limit for riscv JIT
Date: Fri, 24 Sep 2021 10:55:39 +0100 [thread overview]
Message-ID: <20210924095542.33697-2-lmb@cloudflare.com> (raw)
In-Reply-To: <20210924095542.33697-1-lmb@cloudflare.com>
Expose the maximum amount of useable memory from the sparcv JIT.
Signed-off-by: Lorenz Bauer <lmb@cloudflare.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
next prev parent reply other threads:[~2021-09-24 9:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-24 9:55 [PATCH bpf-next 0/4] Fix up bpf_jit_limit some more Lorenz Bauer
2021-09-24 9:55 ` Lorenz Bauer [this message]
2021-09-24 15:28 ` [PATCH bpf-next 1/4] bpf: define bpf_jit_alloc_exec_limit for riscv JIT Luke Nelson
2021-09-24 9:55 ` [PATCH bpf-next 2/4] bpf: define bpf_jit_alloc_exec_limit for arm64 JIT Lorenz Bauer
2021-09-29 16:18 ` Will Deacon
2021-09-24 9:55 ` [PATCH bpf-next 3/4] bpf: prevent increasing bpf_jit_limit above max Lorenz Bauer
2021-09-24 9:55 ` [PATCH bpf-next 4/4] bpf: export bpf_jit_current Lorenz Bauer
2021-09-27 13:34 ` Daniel Borkmann
2021-09-27 14:01 ` Jakub Sitnicki
2021-09-28 9:02 ` Lorenz Bauer
2021-09-29 14:56 ` Nicolas Dichtel
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