linux-kernel - Re: drivers/char/rust_example fails to load 2021-03-20 builds

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Message-ID: <20210322065300.dgory3vfe5jjfvak@gpm.stappers.nl>
Date:   Mon, 22 Mar 2021 07:53:00 +0100
From:   Geert Stappers <stappers@...ppers.nl>
To:     Joshua Abraham <j.abraham1776@...il.com>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        rust-for-linux@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: drivers/char/rust_example fails to load 2021-03-20 builds

On Sun, Mar 21, 2021 at 09:53:27PM -0500, Joshua Abraham wrote:
> Hey Miguel,
> 
> > Please give a go to the nightly from a month ago, i.e. 2021-02-20.
> 
> Cheers, using rustc 1.52.0-nightly (9b471a3f5 2021-02-19) fixed the issue.

How to tell "use older parts in toolchain"?
Yeah, probably a Rust newbie question, still a sincere question.
Was a older version installed? How to tell `rustup` to keep old
versions? Was done with a cargo.toml entry? Or with file
`rust-toolchain`?  Please tell   (Please spoon feed me ;-)

> Interesting that the newer nightly compiler creates these new
> relocations for the code!

Not each change is an improvement.  Hopefully came the change with a
flag to modify the new default behaviour.

Groeten
Geert Stappers
-- 
Silence is hard to parse