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* [PATCH bpf-next v2 0/6] bpf trampoline for arm64
@ 2022-04-14 16:22 ` Xu Kuohai
  0 siblings, 0 replies; 42+ messages in thread
From: Xu Kuohai @ 2022-04-14 16:22 UTC (permalink / raw)
  To: bpf, linux-arm-kernel, linux-kernel, netdev, linux-kselftest
  Cc: Catalin Marinas, Will Deacon, Steven Rostedt, Ingo Molnar,
	Daniel Borkmann, Alexei Starovoitov, Zi Shen Lim,
	Andrii Nakryiko, Martin KaFai Lau, Song Liu, Yonghong Song,
	John Fastabend, KP Singh, David S . Miller, Hideaki YOSHIFUJI,
	David Ahern, Thomas Gleixner, Borislav Petkov, Dave Hansen, x86,
	hpa, Shuah Khan, Mark Rutland, Ard Biesheuvel, Pasha Tatashin,
	Peter Collingbourne, Daniel Kiss, Sudeep Holla, Steven Price,
	Marc Zyngier, Mark Brown, Kumar Kartikeya Dwivedi,
	Delyan Kratunov

Add bpf trampoline support for arm64. Most of the logic is the same as
x86.

Tested on qemu, result:
 #55 fentry_fexit:OK
 #56 fentry_test:OK
 #58 fexit_sleep:OK
 #59 fexit_stress:OK
 #60 fexit_test:OK
 #67 get_func_args_test:OK
 #68 get_func_ip_test:OK
 #101 modify_return:OK

v2:
- Add Song's ACK
- Change the multi-line comment in is_valid_bpf_tramp_flags() into net
  style (patch 3)
- Fix a deadloop issue in ftrace selftest (patch 2)
- Replace pt_regs->x0 with pt_regs->orig_x0 in patch 1 commit message 
- Replace "bpf trampoline" with "custom trampoline" in patch 1, as
  ftrace direct call is not only used by bpf trampoline.

v1: https://lore.kernel.org/bpf/20220413054959.1053668-1-xukuohai@huawei.com/

Xu Kuohai (6):
  arm64: ftrace: Add ftrace direct call support
  ftrace: Fix deadloop caused by direct call in ftrace selftest
  bpf: Move is_valid_bpf_tramp_flags() to the public trampoline code
  bpf, arm64: Impelment bpf_arch_text_poke() for arm64
  bpf, arm64: bpf trampoline for arm64
  selftests/bpf: Fix trivial typo in fentry_fexit.c

 arch/arm64/Kconfig                            |   2 +
 arch/arm64/include/asm/ftrace.h               |  10 +
 arch/arm64/kernel/asm-offsets.c               |   1 +
 arch/arm64/kernel/entry-ftrace.S              |  28 +-
 arch/arm64/net/bpf_jit.h                      |  14 +-
 arch/arm64/net/bpf_jit_comp.c                 | 390 +++++++++++++++++-
 arch/x86/net/bpf_jit_comp.c                   |  20 -
 include/linux/bpf.h                           |   5 +
 kernel/bpf/bpf_struct_ops.c                   |   4 +-
 kernel/bpf/trampoline.c                       |  35 +-
 kernel/trace/trace_selftest.c                 |   4 +-
 .../selftests/bpf/prog_tests/fentry_fexit.c   |   4 +-
 12 files changed, 482 insertions(+), 35 deletions(-)

-- 
2.30.2


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^ permalink raw reply	[flat|nested] 42+ messages in thread

end of thread, other threads:[~2022-04-26  4:03 UTC | newest]

Thread overview: 42+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-04-14 16:22 [PATCH bpf-next v2 0/6] bpf trampoline for arm64 Xu Kuohai
2022-04-14 16:22 ` Xu Kuohai
2022-04-14 16:22 ` [PATCH bpf-next v2 1/6] arm64: ftrace: Add ftrace direct call support Xu Kuohai
2022-04-14 16:22   ` Xu Kuohai
2022-04-14 16:22 ` [PATCH bpf-next v2 2/6] ftrace: Fix deadloop caused by direct call in ftrace selftest Xu Kuohai
2022-04-14 16:22   ` Xu Kuohai
2022-04-20 23:24   ` Steven Rostedt
2022-04-20 23:24     ` Steven Rostedt
2022-04-21  3:01     ` Xu Kuohai
2022-04-21  3:01       ` Xu Kuohai
2022-04-14 16:22 ` [PATCH bpf-next v2 3/6] bpf: Move is_valid_bpf_tramp_flags() to the public trampoline code Xu Kuohai
2022-04-14 16:22   ` Xu Kuohai
2022-04-14 16:22 ` [PATCH bpf-next v2 4/6] bpf, arm64: Impelment bpf_arch_text_poke() for arm64 Xu Kuohai
2022-04-14 16:22   ` Xu Kuohai
2022-04-15  2:34   ` Hou Tao
2022-04-15  2:34     ` Hou Tao
2022-04-15  3:39     ` Xu Kuohai
2022-04-15  3:39       ` Xu Kuohai
2022-04-22 10:54   ` Jakub Sitnicki
2022-04-22 10:54     ` Jakub Sitnicki
2022-04-24  5:05     ` Xu Kuohai
2022-04-24  5:05       ` Xu Kuohai
2022-04-25 14:26       ` Jakub Sitnicki
2022-04-25 14:26         ` Jakub Sitnicki
2022-04-26  4:01         ` Xu Kuohai
2022-04-26  4:01           ` Xu Kuohai
2022-04-14 16:22 ` [PATCH bpf-next v2 5/6] bpf, arm64: bpf trampoline " Xu Kuohai
2022-04-14 16:22   ` Xu Kuohai
2022-04-15 17:12   ` Andrii Nakryiko
2022-04-15 17:12     ` Andrii Nakryiko
2022-04-16  1:57     ` Xu Kuohai
2022-04-16  1:57       ` Xu Kuohai
2022-04-20  7:43       ` Xu Kuohai
2022-04-20  7:43         ` Xu Kuohai
2022-04-20 11:42         ` KP Singh
2022-04-20 11:42           ` KP Singh
2022-04-14 16:22 ` [PATCH bpf-next v2 6/6] selftests/bpf: Fix trivial typo in fentry_fexit.c Xu Kuohai
2022-04-14 16:22   ` Xu Kuohai
2022-04-15  2:37 ` [PATCH bpf-next v2 0/6] bpf trampoline for arm64 Hou Tao
2022-04-15  2:37   ` Hou Tao
2022-04-15  3:47   ` Xu Kuohai
2022-04-15  3:47     ` Xu Kuohai

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