Re: [PATCH v4 0/3] kbuild: Avoid weak external linkage where possible

From: patchwork-bot+netdevbpf
Date: Tue Apr 16 2024 - 10:40:34 EST


Hello:

This series was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@xxxxxxxxxxxxx>:

On Mon, 15 Apr 2024 18:20:42 +0200 you wrote:
> From: Ard Biesheuvel <ardb@xxxxxxxxxx>
>
> Weak external linkage is intended for cases where a symbol reference
> can remain unsatisfied in the final link. Taking the address of such a
> symbol should yield NULL if the reference was not satisfied.
>
> Given that ordinary RIP or PC relative references cannot produce NULL,
> some kind of indirection is always needed in such cases, and in position
> independent code, this results in a GOT entry. In ordinary code, it is
> arch specific but amounts to the same thing.
>
> [...]

Here is the summary with links:
- [v4,1/3] kallsyms: Avoid weak references for kallsyms symbols
(no matching commit)
- [v4,2/3] vmlinux: Avoid weak reference to notes section
(no matching commit)
- [v4,3/3] btf: Avoid weak external references
https://git.kernel.org/bpf/bpf-next/c/fc5eb4a84e4c

You are awesome, thank you!
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