linux-kernel - Re: [PATCH] rust: add basic ELF sections parser

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Message-ID: <2025053047-theology-unsaid-d6ac@gregkh>
Date: Fri, 30 May 2025 08:22:59 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Alexandre Courbot <acourbot@...dia.com>
Cc: Danilo Krummrich <dakr@...nel.org>, Timur Tabi <timur@...nel.org>,
	John Hubbard <jhubbard@...dia.com>, Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org
Subject: Re: [PATCH] rust: add basic ELF sections parser

On Fri, May 30, 2025 at 09:58:02AM +0900, Alexandre Courbot wrote:
> However, Nova also supports a couple of older chip generations that use
> the same GSP firmware -  it is for these that the ELF unpacking must
> occur in the kernel. IIUC this has to do with the capabilities of the
> microcontroller that ultimately does the loading (more capable RISC-V on
> Hopper+ vs. older and more limited Falcon).

Why specifically does the kernel have to get involved here?  What
requires it to do it that userspace can not?

thanks,

greg k-h