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From: Alexei Starovoitov <ast@fb.com>
To: Andrii Nakryiko <andrii.nakryiko@gmail.com>,
	John Fastabend <john.fastabend@gmail.com>
Cc: Andrii Nakryiko <andriin@fb.com>, bpf <bpf@vger.kernel.org>,
	Networking <netdev@vger.kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Kernel Team <Kernel-team@fb.com>
Subject: Re: [PATCH bpf-next 1/2] libbpf: stop enforcing kern_version, populate it for users
Date: Fri, 4 Oct 2019 14:36:04 +0000	[thread overview]
Message-ID: <fb67f98a-08b4-3184-22f8-7d3fb91c9515@fb.com> (raw)
In-Reply-To: <CAEf4BzbP=k72O2UXA=Om+Gv1Laj+Ya4QaTNKy7AVkMze6GqLEw@mail.gmail.com>

On 10/4/19 7:32 AM, Andrii Nakryiko wrote:
>> If we are not going to validate the section should we also skip collect'ing it?
> Well, if user supplied version, we will parse and use it to override
> out prepopulated one, so in that sense we do have validation.
> 
> But I think it's fine just to drop it altogether. Will do in v3.
> 

what about older kernel that still enforce it?
May be populate it in bpf_attr while loading, but
don't check it in elf from libbpf?

  reply	other threads:[~2019-10-04 14:36 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-04  3:00 [PATCH bpf-next 0/2] Add new-style bpf_object__open APIs Andrii Nakryiko
2019-10-04  3:00 ` [PATCH bpf-next 1/2] libbpf: stop enforcing kern_version, populate it for users Andrii Nakryiko
2019-10-04 14:05   ` John Fastabend
2019-10-04 14:32     ` Andrii Nakryiko
2019-10-04 14:36       ` Alexei Starovoitov [this message]
2019-10-04 14:55         ` John Fastabend
2019-10-04 15:07         ` Andrii Nakryiko
2019-10-04 15:59           ` John Fastabend
2019-10-18 14:49             ` John Fastabend
2019-10-04  3:00 ` [PATCH bpf-next 2/2] libbpf: add bpf_object__open_{file,mem} w/ extensible opts Andrii Nakryiko

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