From: Song Liu <songliubraving@fb.com>
To: Alexei Starovoitov <ast@kernel.org>
Cc: David Miller <davem@davemloft.net>,
"daniel@iogearbox.net" <daniel@iogearbox.net>,
"x86@kernel.org" <x86@kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"bpf@vger.kernel.org" <bpf@vger.kernel.org>,
Kernel Team <Kernel-team@fb.com>
Subject: Re: [PATCH v3 bpf-next 12/18] bpf: Reserve space for BPF trampoline in BPF programs
Date: Fri, 8 Nov 2019 07:25:42 +0000 [thread overview]
Message-ID: <04BE1B28-327C-4843-8E73-0DCA3971C144@fb.com> (raw)
In-Reply-To: <20191108064039.2041889-13-ast@kernel.org>
> On Nov 7, 2019, at 10:40 PM, Alexei Starovoitov <ast@kernel.org> wrote:
>
> BPF trampoline can be made to work with existing 5 bytes of BPF program
> prologue, but let's add 5 bytes of NOPs to the beginning of every JITed BPF
> program to make BPF trampoline job easier. They can be removed in the future.
>
> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
> Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
next prev parent reply other threads:[~2019-11-08 7:26 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-08 6:40 [PATCH v3 bpf-next 00/18] Introduce BPF trampoline Alexei Starovoitov
2019-11-08 6:40 ` [PATCH v3 bpf-next 01/18] bpf: refactor x86 JIT into helpers Alexei Starovoitov
2019-11-08 19:27 ` Andrii Nakryiko
2019-11-08 6:40 ` [PATCH v3 bpf-next 02/18] bpf: Add bpf_arch_text_poke() helper Alexei Starovoitov
2019-11-08 6:56 ` Song Liu
2019-11-08 8:23 ` Björn Töpel
2019-11-08 14:09 ` Alexei Starovoitov
2019-11-08 9:11 ` Peter Zijlstra
2019-11-08 9:36 ` Peter Zijlstra
2019-11-08 13:41 ` Alexei Starovoitov
2019-11-08 19:32 ` Alexei Starovoitov
2019-11-08 21:36 ` Peter Zijlstra
2019-11-08 21:39 ` David Miller
2019-11-11 8:14 ` Peter Zijlstra
2019-11-11 10:21 ` Daniel Borkmann
2019-11-11 16:10 ` Jonathan Corbet
2019-11-08 23:05 ` Alexei Starovoitov
2019-11-10 10:54 ` Thomas Gleixner
2019-11-08 6:40 ` [PATCH v3 bpf-next 03/18] bpf: Introduce BPF trampoline Alexei Starovoitov
2019-11-08 7:04 ` Song Liu
2019-11-08 6:40 ` [PATCH v3 bpf-next 04/18] libbpf: Introduce btf__find_by_name_kind() Alexei Starovoitov
2019-11-08 7:05 ` Song Liu
2019-11-08 19:21 ` Andrii Nakryiko
2019-11-08 6:40 ` [PATCH v3 bpf-next 05/18] libbpf: Add support to attach to fentry/fexit tracing progs Alexei Starovoitov
2019-11-08 7:12 ` Song Liu
2019-11-08 19:44 ` Andrii Nakryiko
2019-11-08 6:40 ` [PATCH v3 bpf-next 06/18] selftest/bpf: Simple test for fentry/fexit Alexei Starovoitov
2019-11-08 6:40 ` [PATCH v3 bpf-next 07/18] bpf: Add kernel test functions for fentry testing Alexei Starovoitov
2019-11-08 6:40 ` [PATCH v3 bpf-next 08/18] selftests/bpf: Add test for BPF trampoline Alexei Starovoitov
2019-11-08 6:40 ` [PATCH v3 bpf-next 09/18] selftests/bpf: Add fexit tests " Alexei Starovoitov
2019-11-08 6:40 ` [PATCH v3 bpf-next 10/18] selftests/bpf: Add combined fentry/fexit test Alexei Starovoitov
2019-11-08 7:14 ` Song Liu
2019-11-08 6:40 ` [PATCH v3 bpf-next 11/18] selftests/bpf: Add stress test for maximum number of progs Alexei Starovoitov
2019-11-08 7:24 ` Song Liu
2019-11-08 6:40 ` [PATCH v3 bpf-next 12/18] bpf: Reserve space for BPF trampoline in BPF programs Alexei Starovoitov
2019-11-08 7:25 ` Song Liu [this message]
2019-11-08 6:40 ` [PATCH v3 bpf-next 13/18] bpf: Fix race in btf_resolve_helper_id() Alexei Starovoitov
2019-11-08 7:32 ` Song Liu
2019-11-08 19:58 ` Andrii Nakryiko
2019-11-08 6:40 ` [PATCH v3 bpf-next 14/18] bpf: Compare BTF types of functions arguments with actual types Alexei Starovoitov
2019-11-08 17:28 ` Song Liu
2019-11-08 17:32 ` Song Liu
2019-11-08 17:57 ` Alexei Starovoitov
2019-11-08 17:59 ` Song Liu
2019-11-08 23:46 ` Andrii Nakryiko
2019-11-08 6:40 ` [PATCH v3 bpf-next 15/18] bpf: Support attaching tracing BPF program to other BPF programs Alexei Starovoitov
2019-11-08 18:49 ` Song Liu
2019-11-08 18:59 ` Alexei Starovoitov
2019-11-08 20:17 ` Toke Høiland-Jørgensen
2019-11-08 21:14 ` Alexei Starovoitov
2019-11-08 21:32 ` Toke Høiland-Jørgensen
2019-11-10 7:17 ` Andrii Nakryiko
2019-11-11 23:04 ` Alexei Starovoitov
2019-11-12 4:38 ` Andrii Nakryiko
2019-11-12 4:47 ` Alexei Starovoitov
2019-11-08 6:40 ` [PATCH v3 bpf-next 16/18] libbpf: Add support for attaching BPF programs " Alexei Starovoitov
2019-11-08 18:57 ` Song Liu
2019-11-08 19:13 ` Alexei Starovoitov
2019-11-08 19:14 ` Song Liu
2019-11-10 16:56 ` Andrii Nakryiko
2019-11-08 6:40 ` [PATCH v3 bpf-next 17/18] selftests/bpf: Extend test_pkt_access test Alexei Starovoitov
2019-11-08 19:03 ` Song Liu
2019-11-10 16:58 ` Andrii Nakryiko
2019-11-08 6:40 ` [PATCH v3 bpf-next 18/18] selftests/bpf: Add a test for attaching BPF prog to another BPF prog and subprog Alexei Starovoitov
2019-11-08 19:13 ` Song Liu
2019-11-10 17:04 ` Andrii Nakryiko
2019-11-11 23:07 ` Alexei Starovoitov
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