netdev - Re: [PATCH RESEND bpf-next v3 0/6] Zbb support and code simplification for RV64 JIT

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Date: Mon, 22 Jan 2024 17:30:02 +0100
From: Björn Töpel <bjorn@...nel.org>
To: Pu Lehui <pulehui@...weicloud.com>, bpf@...r.kernel.org,
 linux-riscv@...ts.infradead.org, netdev@...r.kernel.org
Cc: Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann
 <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>, Martin KaFai
 Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>, Yonghong Song
 <yhs@...com>, John Fastabend <john.fastabend@...il.com>, KP Singh
 <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...gle.com>, Hao Luo
 <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, Palmer Dabbelt
 <palmer@...belt.com>, Conor Dooley <conor@...nel.org>, Luke Nelson
 <luke.r.nels@...il.com>, Pu Lehui <pulehui@...wei.com>
Subject: Re: [PATCH RESEND bpf-next v3 0/6] Zbb support and code
 simplification for RV64 JIT

Pu Lehui <pulehui@...weicloud.com> writes:

> On 2024/1/22 23:07, Björn Töpel wrote:
>> Björn Töpel <bjorn@...nel.org> writes:
>> 
>>> Pu Lehui <pulehui@...weicloud.com> writes:
>>>
>>>> On 2024/1/22 22:33, Björn Töpel wrote:
>>>>> Pu Lehui <pulehui@...weicloud.com> writes:
>>>>>
>>>>>> Add Zbb support [0] to optimize code size and performance of RV64 JIT.
>>>>>> Meanwhile, adjust the code for unification and simplification. Tests
>>>>>> test_bpf.ko and test_verifier have passed, as well as the relative
>>>>>> testcases of test_progs*.
>>>>>>
>>>>>> Link: https://github.com/riscv/riscv-bitmanip/releases/download/1.0.0/bitmanip-1.0.0-38-g865e7a7.pdf [0]
>>>>>>
>>>>>> v3 resend:
>>>>>> - resend for mail be treated as spam.
>>>>>>
>>>>>> v3:
>>>>>> - Change to early-exit code style and make code more explicit.
>>>>>
>>>>> Lehui,
>>>>>
>>>>> Sorry for the delay. I'm chasing a struct_ops RISC-V BPF regression in
>>>>> 6.8-rc1, I will need to wrap my head around that prior reviewing
>>>>> properly.
>>>>>
>>>>
>>>> Oh, I also found the problem with struct ops and fixed it
>> 
>> Pu, with your patch bpf_iter_setsockopt, bpf_tcp_ca, and dummy_st_ops
>> passes!
>> 
>> Please spin a proper fixes patch, and feel free to add:
>> 
>> Tested-by: Björn Töpel <bjorn@...osinc.com>
>> Acked-by: Björn Töpel <bjorn@...nel.org>
>> 
>
> Is that in a hurry? If not, I would like to send it with the upcoming 
> patchset.

This is a separate fix, right? What patchset are you referring to where
the fix would be in?

As of now 6.8-rc1 is broken! It would be a great with a fix asap...


Cheers,
Björn