From: patchwork-bot+netdevbpf@kernel.org
To: Andrii Nakryiko <andrii@kernel.org>
Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
kernel-team@fb.com, songliubraving@fb.com
Subject: Re: [PATCH v2 bpf-next 1/2] libbpf: load global data maps lazily on legacy kernels
Date: Thu, 25 Nov 2021 22:10:09 +0000 [thread overview]
Message-ID: <163787820917.6965.4029647479959151077.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20211123200105.387855-1-andrii@kernel.org>
Hello:
This series was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:
On Tue, 23 Nov 2021 12:01:04 -0800 you wrote:
> Load global data maps lazily, if kernel is too old to support global
> data. Make sure that programs are still correct by detecting if any of
> the to-be-loaded programs have relocation against any of such maps.
>
> This allows to solve the issue ([0]) with bpf_printk() and Clang
> generating unnecessary and unreferenced .rodata.strX.Y sections, but it
> also goes further along the CO-RE lines, allowing to have a BPF object
> in which some code can work on very old kernels and relies only on BPF
> maps explicitly, while other BPF programs might enjoy global variable
> support. If such programs are correctly set to not load at runtime on
> old kernels, bpf_object will load and function correctly now.
>
> [...]
Here is the summary with links:
- [v2,bpf-next,1/2] libbpf: load global data maps lazily on legacy kernels
https://git.kernel.org/bpf/bpf-next/c/16e0c35c6f7a
- [v2,bpf-next,2/2] selftests/bpf: mix legacy (maps) and modern (vars) BPF in one test
https://git.kernel.org/bpf/bpf-next/c/e4f7ac90c2b0
You are awesome, thank you!
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next prev parent reply other threads:[~2021-11-25 22:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-23 20:01 [PATCH v2 bpf-next 1/2] libbpf: load global data maps lazily on legacy kernels Andrii Nakryiko
2021-11-23 20:01 ` [PATCH v2 bpf-next 2/2] selftests/bpf: mix legacy (maps) and modern (vars) BPF in one test Andrii Nakryiko
2021-11-25 22:10 ` patchwork-bot+netdevbpf [this message]
2021-11-25 22:21 ` [PATCH v2 bpf-next 1/2] libbpf: load global data maps lazily on legacy kernels Alan Maguire
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