From: Pu Lehui <pulehui@huaweicloud.com>
To: "Björn Töpel" <bjorn@kernel.org>,
bpf@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: Luke Nelson <luke.r.nels@gmail.com>, Xi Wang <xi.wang@gmail.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
Song Liu <song@kernel.org>, Yonghong Song <yhs@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@google.com>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>, Pu Lehui <pulehui@huawei.com>
Subject: Re: [RFC PATCH RESEND bpf-next 0/4] Support bpf trampoline for RV64
Date: Sat, 24 Dec 2022 14:22:57 +0800 [thread overview]
Message-ID: <b3fb772a-db85-05ca-a1bf-4781526fae1d@huaweicloud.com> (raw)
In-Reply-To: <87ili3a8zy.fsf@all.your.base.are.belong.to.us>
On 2022/12/22 21:00, Björn Töpel wrote:
> Pu Lehui <pulehui@huaweicloud.com> writes:
>
>> BPF trampoline is the critical infrastructure of the bpf
>> subsystem, acting as a mediator between kernel functions
>> and BPF programs. Numerous important features, such as
>> using ebpf program for zero overhead kernel introspection,
>> rely on this key component. We can't wait to support bpf
>> trampoline on RV64. The implementation of bpf trampoline
>> was closely to x86 and arm64 for future development.
>
> Thank you for working on this! BPF trampoline is the "missing piece"
> from getting proper kfunc support.
>
> Unfortunately, I wont be able to do a proper review until next week.
>
Take your time, it might take several rounds of optimization. Yep, riscv
bpf will look more complete when bpf trampoline and kfunc are supported.
Anyway, have a nice christmas holidays.😄
Lehui
>
> Happy holidays,
> Björn
prev parent reply other threads:[~2022-12-24 6:23 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-20 2:13 Pu Lehui
2022-12-20 2:13 ` [RFC PATCH RESEND bpf-next 1/4] bpf: Rollback to text_poke when arch not supported ftrace direct call Pu Lehui
2022-12-20 2:32 ` Xu Kuohai
2022-12-21 2:36 ` Pu Lehui
2023-01-03 12:05 ` Björn Töpel
2023-01-06 2:35 ` Pu Lehui
2022-12-20 2:13 ` [RFC PATCH RESEND bpf-next 2/4] riscv, bpf: Factor out emit_call for kernel and bpf context Pu Lehui
2022-12-20 2:13 ` [RFC PATCH RESEND bpf-next 3/4] riscv, bpf: Add bpf_arch_text_poke support for RV64 Pu Lehui
2022-12-20 3:00 ` Xu Kuohai
2022-12-22 3:01 ` Pu Lehui
2023-01-03 18:12 ` Björn Töpel
2023-01-06 1:57 ` Pu Lehui
2023-01-06 3:59 ` Pu Lehui
2022-12-20 2:13 ` [RFC PATCH RESEND bpf-next 4/4] riscv, bpf: Add bpf trampoline " Pu Lehui
2023-01-03 19:16 ` Björn Töpel
2023-01-06 1:36 ` Pu Lehui
2022-12-22 13:00 ` [RFC PATCH RESEND bpf-next 0/4] Support bpf trampoline " Björn Töpel
2022-12-24 6:22 ` Pu Lehui [this message]
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