linux-kernel - Re: [PATCH v1 v1 0/4] [RUST] Framebuffer driver support

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Message-ID: <2026012627-uncut-plaything-759e@gregkh>
Date: Mon, 26 Jan 2026 11:32:40 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: pengfuyuan <pengfuyuan@...inos.cn>
Cc: Danilo Krummrich <dakr@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>,
	Daniel Almeida <daniel.almeida@...labora.com>,
	Miguel Ojeda <ojeda@...nel.org>, Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Trevor Gross <tmgross@...ch.edu>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Helge Deller <deller@....de>, Hans de Goede <hansg@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>, Lee Jones <lee@...nel.org>,
	Sam Ravnborg <sam@...nborg.org>, Zsolt Kajtar <soci@....rulez.org>,
	Ville Syrjälä <ville.syrjala@...ux.intel.com>,
	rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org
Subject: Re: [PATCH v1 v1 0/4] [RUST] Framebuffer driver support

On Mon, Jan 26, 2026 at 04:17:40PM +0800, pengfuyuan wrote:
> This series has been tested on:
> - ARM64 platforms with various display configurations
> - AMD RX550 graphics card
> - Moore Threads S30 graphics card
> - Multiple other graphics cards

How?  If there is no rust framebuffer drivers for those hardware
platforms, how exactly were these new codepaths tested?

> All tested configurations show normal display functionality with proper
> framebuffer initialization, rendering operations (including I/O, color register
> management, and blitting), memory mapping, and resource cleanup. The simplefb
> test driver successfully demonstrates the usage of all framebuffer framework
> APIs and validates the abstraction's correctness.

Really?  Where are the drivers for this?  Or did simplefb really work
for all of them?

confused,

greg k-h