Re: [PATCH v2 0/3] Inline helpers into Rust without full LTO

Andrew Lunn <[email protected]> Mon, 23 Mar 2026 14:28:25 +0100

Newsgroups	org.infradead.lists.linux-um,dev.linux.lists.llvm,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kbuild,org.kernel.vger.linux-kernel,org.kernel.vger.rust-for-linux,org.kvack.linux-mm
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> > If you want netlink on um, arm32, riscv, loongarch you would need a
> > different implementation of the binding?
> 
> It doesn't need this feature to build and function. It'll just be a bit slower
> because inlining from C to Rust won't happen.

So it sounds like my understanding is out of date. When the first
Ethernet PHY driver was being merged, Rust could not access inline C
functions. The binding had to replicate the functionality. But you are
saying that Rust can now make use of inline C code, but not actually
inline it? It results in a function call?

What this feature does it actually allows inline C functions to be
inline? So it is just an optimisation?

	Andrew