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(d.5.b.3.f.b.d.4.c.0.9.7.6.8.3.1.f.f.6.2.a.5.a.7.0.b.8.0.1.0.0.2.ip6.arpa. [2001:8b0:7a5a:26ff:1386:790c:4dbf:3b5d]) by smtp.gmail.com with ESMTPSA id o6sm14875894wri.49.2021.10.12.06.59.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Oct 2021 06:59:44 -0700 (PDT) From: Lorenz Bauer To: nicolas.dichtel@6wind.com, luke.r.nels@gmail.com, Daniel Borkmann , Alexei Starovoitov , Zi Shen Lim , Catalin Marinas , Will Deacon , Andrii Nakryiko Cc: kernel-team@cloudflare.com, Lorenz Bauer , netdev@vger.kernel.org, bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/4] bpf: define bpf_jit_alloc_exec_limit for arm64 JIT Date: Tue, 12 Oct 2021 14:59:33 +0100 Message-Id: <20211012135935.37054-3-lmb@cloudflare.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211012135935.37054-1-lmb@cloudflare.com> References: <20211012135935.37054-1-lmb@cloudflare.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Expose the maximum amount of useable memory from the arm64 JIT. Signed-off-by: Lorenz Bauer --- 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 41c23f474ea6..803e7773fa86 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -1136,6 +1136,11 @@ 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