From: Song Liu <song@kernel.org>
To: bpf@vger.kernel.org
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
martin.lau@kernel.org, kernel-team@meta.com,
Song Liu <song@kernel.org>
Subject: [PATCH v4 bpf-next 0/7] Allocate bpf trampoline on bpf_prog_pack
Date: Wed, 18 Oct 2023 11:03:29 -0700 [thread overview]
Message-ID: <20231018180336.1696131-1-song@kernel.org> (raw)
This set enables allocating bpf trampoline from bpf_prog_pack on x86. The
majority of this work, however, is the refactoring of trampoline code.
This is needed because we need to handle 4 archs and 2 users (trampoline
and struct_ops).
1/7 through 6/7 refactors trampoline code. A few helpers are added.
7/7 finally let bpf trampoline on x86 use bpf_prog_pack.
Changes in v4:
1. Dropped 1/8 in v3, which is already merged in bpf-next.
2. Add Reviewed-by from Björn Töpel.
Changes in v3:
1. Fix bug in s390. (Thanks to Ilya Leoshkevich).
2. Fix build error in riscv. (kernel test robot).
Changes in v2:
1. Add missing changes in net/bpf/bpf_dummy_struct_ops.c.
2. Reduce one dry run in arch_prepare_bpf_trampoline. (Xu Kuohai)
3. Other small fixes.
Song Liu (7):
bpf: Let bpf_prog_pack_free handle any pointer
bpf: Adjust argument names of arch_prepare_bpf_trampoline()
bpf: Add helpers for trampoline image management
bpf, x86: Adjust arch_prepare_bpf_trampoline return value
bpf: Add arch_bpf_trampoline_size()
bpf: Use arch_bpf_trampoline_size
x86, bpf: Use bpf_prog_pack for bpf trampoline
arch/arm64/net/bpf_jit_comp.c | 55 +++++++++-----
arch/riscv/net/bpf_jit_comp64.c | 25 ++++---
arch/s390/net/bpf_jit_comp.c | 56 +++++++++------
arch/x86/net/bpf_jit_comp.c | 124 +++++++++++++++++++++++++-------
include/linux/bpf.h | 12 +++-
include/linux/filter.h | 2 +-
kernel/bpf/bpf_struct_ops.c | 19 +++--
kernel/bpf/core.c | 21 +++---
kernel/bpf/dispatcher.c | 5 +-
kernel/bpf/trampoline.c | 93 ++++++++++++++++++------
net/bpf/bpf_dummy_struct_ops.c | 7 +-
11 files changed, 292 insertions(+), 127 deletions(-)
--
2.34.1
next reply other threads:[~2023-10-18 18:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-18 18:03 Song Liu [this message]
2023-10-18 18:03 ` [PATCH v4 bpf-next 1/7] bpf: Let bpf_prog_pack_free handle any pointer Song Liu
2023-10-18 18:03 ` [PATCH v4 bpf-next 2/7] bpf: Adjust argument names of arch_prepare_bpf_trampoline() Song Liu
2023-10-18 18:03 ` [PATCH v4 bpf-next 3/7] bpf: Add helpers for trampoline image management Song Liu
2023-10-24 14:45 ` Daniel Borkmann
2023-10-24 15:45 ` Song Liu
2023-10-18 18:03 ` [PATCH v4 bpf-next 4/7] bpf, x86: Adjust arch_prepare_bpf_trampoline return value Song Liu
2023-10-18 18:03 ` [PATCH v4 bpf-next 5/7] bpf: Add arch_bpf_trampoline_size() Song Liu
2023-10-24 14:50 ` Daniel Borkmann
2023-10-18 18:03 ` [PATCH v4 bpf-next 6/7] bpf: Use arch_bpf_trampoline_size Song Liu
2023-10-24 21:01 ` Jiri Olsa
2023-10-24 21:08 ` Song Liu
2023-10-24 21:30 ` Jiri Olsa
2023-10-24 22:16 ` Song Liu
2023-10-18 18:03 ` [PATCH v4 bpf-next 7/7] x86, bpf: Use bpf_prog_pack for bpf trampoline Song Liu
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