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From: Lorenz Bauer <lmb@cloudflare.com>
To: nicolas.dichtel@6wind.com, luke.r.nels@gmail.com,
	"Björn Töpel" <bjorn@kernel.org>, "Xi Wang" <xi.wang@gmail.com>,
	"Alexei Starovoitov" <ast@kernel.org>,
	"Daniel Borkmann" <daniel@iogearbox.net>,
	"Andrii Nakryiko" <andrii@kernel.org>,
	"Paul Walmsley" <paul.walmsley@sifive.com>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>
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 v2 1/4] bpf: define bpf_jit_alloc_exec_limit for riscv JIT
Date: Tue, 12 Oct 2021 14:59:32 +0100	[thread overview]
Message-ID: <20211012135935.37054-2-lmb@cloudflare.com> (raw)
In-Reply-To: <20211012135935.37054-1-lmb@cloudflare.com>

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

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Acked-by: Luke Nelson <luke.r.nels@gmail.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


WARNING: multiple messages have this Message-ID (diff)
From: Lorenz Bauer <lmb@cloudflare.com>
To: nicolas.dichtel@6wind.com, luke.r.nels@gmail.com,
	"Björn Töpel" <bjorn@kernel.org>, "Xi Wang" <xi.wang@gmail.com>,
	"Alexei Starovoitov" <ast@kernel.org>,
	"Daniel Borkmann" <daniel@iogearbox.net>,
	"Andrii Nakryiko" <andrii@kernel.org>,
	"Paul Walmsley" <paul.walmsley@sifive.com>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>
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 v2 1/4] bpf: define bpf_jit_alloc_exec_limit for riscv JIT
Date: Tue, 12 Oct 2021 14:59:32 +0100	[thread overview]
Message-ID: <20211012135935.37054-2-lmb@cloudflare.com> (raw)
In-Reply-To: <20211012135935.37054-1-lmb@cloudflare.com>

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

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Acked-by: Luke Nelson <luke.r.nels@gmail.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


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

  reply	other threads:[~2021-10-12 13:59 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-12 13:59 [PATCH v2 0/4] Fix up bpf_jit_limit some more Lorenz Bauer
2021-10-12 13:59 ` Lorenz Bauer
2021-10-12 13:59 ` Lorenz Bauer [this message]
2021-10-12 13:59   ` [PATCH v2 1/4] bpf: define bpf_jit_alloc_exec_limit for riscv JIT Lorenz Bauer
2021-10-12 13:59 ` [PATCH v2 2/4] bpf: define bpf_jit_alloc_exec_limit for arm64 JIT Lorenz Bauer
2021-10-12 13:59   ` Lorenz Bauer
2021-10-12 13:59 ` [PATCH v2 3/4] bpf: prevent increasing bpf_jit_limit above max Lorenz Bauer
2021-10-12 13:59 ` [PATCH v2 4/4] bpf: export bpf_jit_current Lorenz Bauer
2021-10-12 16:29   ` Nicolas Dichtel
2021-10-13  8:35     ` Lorenz Bauer
2021-10-13 12:29       ` Nicolas Dichtel
2021-10-13 19:56 ` [PATCH v2 0/4] Fix up bpf_jit_limit some more Jakub Sitnicki
2021-10-13 19:56   ` Jakub Sitnicki
2021-10-14 14:22   ` Lorenz Bauer
2021-10-14 14:22     ` Lorenz Bauer

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