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From: Lorenz Bauer <lmb@cloudflare.com>
To: Daniel Borkmann <daniel@iogearbox.net>,
	Alexei Starovoitov <ast@kernel.org>,
	Zi Shen Lim <zlim.lnx@gmail.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Andrii Nakryiko <andrii@kernel.org>
Cc: kernel-team@cloudflare.com, Lorenz Bauer <lmb@cloudflare.com>,
	netdev@vger.kernel.org, bpf@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH bpf-next 2/4] bpf: define bpf_jit_alloc_exec_limit for arm64 JIT
Date: Fri, 24 Sep 2021 10:55:40 +0100	[thread overview]
Message-ID: <20210924095542.33697-3-lmb@cloudflare.com> (raw)
In-Reply-To: <20210924095542.33697-1-lmb@cloudflare.com>

Expose the maximum amount of useable memory from the arm64 JIT.

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
---
 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


WARNING: multiple messages have this Message-ID (diff)
From: Lorenz Bauer <lmb@cloudflare.com>
To: Daniel Borkmann <daniel@iogearbox.net>,
	Alexei Starovoitov <ast@kernel.org>,
	Zi Shen Lim <zlim.lnx@gmail.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Andrii Nakryiko <andrii@kernel.org>
Cc: kernel-team@cloudflare.com, Lorenz Bauer <lmb@cloudflare.com>,
	netdev@vger.kernel.org, bpf@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH bpf-next 2/4] bpf: define bpf_jit_alloc_exec_limit for arm64 JIT
Date: Fri, 24 Sep 2021 10:55:40 +0100	[thread overview]
Message-ID: <20210924095542.33697-3-lmb@cloudflare.com> (raw)
In-Reply-To: <20210924095542.33697-1-lmb@cloudflare.com>

Expose the maximum amount of useable memory from the arm64 JIT.

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
---
 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


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2021-09-24  9:56 UTC|newest]

Thread overview: 16+ 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
2021-09-24  9:55 ` [PATCH bpf-next 1/4] bpf: define bpf_jit_alloc_exec_limit for riscv JIT Lorenz Bauer
2021-09-24  9:55   ` Lorenz Bauer
2021-09-24 15:28   ` Luke Nelson
2021-09-24 15:28     ` Luke Nelson
2021-09-24  9:55 ` Lorenz Bauer [this message]
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
2021-09-29 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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