From: Yonghong Song <yonghong.song@linux.dev>
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>
Subject: Re: bpf selftest pyperf180.c compilation failure with latest last llvm18 (in development)
Date: Wed, 8 Nov 2023 18:58:20 -0800 [thread overview]
Message-ID: <ec34f1d5-2b57-4f0f-9edd-070bb98a2b6c@linux.dev> (raw)
In-Reply-To: <98d0330ecb6b3b1a366de5395dbef7ab7758288a.camel@gmail.com>
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.
prev parent reply other threads:[~2023-11-09 2:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-31 3:58 bpf selftest pyperf180.c compilation failure with latest last llvm18 (in development) Yonghong Song
2023-11-08 2:13 ` Eduard Zingerman
2023-11-08 20:05 ` Alexei Starovoitov
2023-11-09 1:20 ` Eduard Zingerman
2023-11-09 2:58 ` Yonghong Song [this message]
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