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Subject: Re: bpf selftest pyperf180.c compilation failure with latest last
 llvm18 (in development)
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To: Eduard Zingerman <eddyz87@gmail.com>,
 Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>,
 Daniel Borkmann <daniel@iogearbox.net>, Andrii Nakryiko <andrii@kernel.org>,
 Martin KaFai Lau <martin.lau@kernel.org>, bpf <bpf@vger.kernel.org>
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From: Yonghong Song <yonghong.song@linux.dev>
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On 11/8/23 5:20 PM, Eduard Zingerman wrote:
> On Wed, 2023-11-08 at 12:05 -0800, Alexei Starovoitov wrote:
> [...]
>> The algorithm doesn't look simple.
>> Even if we change llvm to do this, it's not clear whether
>> the verifier will be able to consume such code.
> Actually, I don't think that trampoline jumps could cause any trouble.
>
>> imo it's too much effort to address a non-issue.
>> I'd just adjust the pyperf180.c test.
> Ok, I'll drop this. Thank you for taking a look.

Thanks Eduard for doing analysis for this! I will send
a patch soon to fix selftest failure issue.