linux-kernel - Re: [PATCH] powerpc: Enable Rust for ppc64le

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Message-ID: <CANiq72k41tCq7-LccTz2NNpUF-0sOqPvbj-z+Qz0msud3O-3AQ@mail.gmail.com>
Date: Wed, 4 Feb 2026 18:49:23 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: "Mukesh Kumar Chaurasiya (IBM)" <mkchauras@...il.com>
Cc: maddy@...ux.ibm.com, mpe@...erman.id.au, npiggin@...il.com, 
	chleroy@...nel.org, peterz@...radead.org, jpoimboe@...nel.org, 
	jbaron@...mai.com, rostedt@...dmis.org, ardb@...nel.org, ojeda@...nel.org, 
	boqun.feng@...il.com, gary@...yguo.net, bjorn3_gh@...tonmail.com, 
	lossin@...nel.org, a.hindborg@...nel.org, aliceryhl@...gle.com, 
	tmgross@...ch.edu, dakr@...nel.org, nathan@...nel.org, 
	nick.desaulniers+lkml@...il.com, morbo@...gle.com, justinstitt@...gle.com, 
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org, 
	rust-for-linux@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] powerpc: Enable Rust for ppc64le

On Wed, Feb 4, 2026 at 6:54 AM Mukesh Kumar Chaurasiya (IBM)
<mkchauras@...il.com> wrote:
>
> +    } else if cfg.has("PPC64") {

Can this be done via flags, i.e. avoiding the `target.json`?

We are trying to avoid adding new custom targets, since the idea is to
remove our reliance on `target.json`.

If it is not possible to do it via flags only, then we should talk to
upstream to add the needed flags or perhaps a new built-in target.

Thanks!

(By the way, Michael back in 2021 did the original integration of
ppc64le before Rust was merged into mainline -- he may want to take a
look at this :) I see he is in Cc).

Cheers,
Miguel