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Date: Wed, 02 Sep 2026 21:30:41 +0200
Message-Id: <DL52W6KOLJIQ.1JCEW8T6036A8@kernel.org>
Subject: Re: [PATCH v5 01/11] gpu: nova-core: Add public driver API to
 nova-core
Cc: "nova-gpu" <nova-gpu@lists.linux.dev>, "M Henning"
 <mhenning@darkrefraction.com>, "Alice Ryhl" <aliceryhl@google.com>, "David
 Airlie" <airlied@gmail.com>, "Alexandre Courbot" <acourbot@nvidia.com>,
 "Benno Lossin" <lossin@kernel.org>, "Gary Guo" <gary@garyguo.net>, "Eliot
 Courtney" <ecourtney@nvidia.com>, "John Hubbard" <jhubbard@nvidia.com>,
 <linux-kernel@vger.kernel.org>, <dri-devel@lists.freedesktop.org>,
 <rust-for-linux@vger.kernel.org>
To: "Alistair Popple" <apopple@nvidia.com>
From: "Danilo Krummrich" <dakr@kernel.org>
References: <20260828033531.1117754-1-apopple@nvidia.com>
 <20260828033531.1117754-2-apopple@nvidia.com>
 <DL3EGE1IY4FL.3X49WKCS67UT@kernel.org> <apfHOxl6uB8xQHBq@nvdebian.thelocal>
In-Reply-To: <apfHOxl6uB8xQHBq@nvdebian.thelocal>

On Wed Sep 2, 2026 at 8:57 AM CEST, Alistair Popple wrote:
> Not being a Rust variance ninja it took me a while to figure this out :) =
But now
> that I have I agree the projections for 'static at least are quite nice a=
nd I
> think Gary's suggestion helps a bit as well for non-static. So assuming y=
ou're
> ok with me adding this code with your Co-developed-by or other appropriat=
e tag
> then I will incorporate this idea into v6 so everything keeps working if/=
when
> Covariance no longer holds for Gpu.

Sure, I'd suggest to base it off of this diff [1].

Thanks,
Danilo

[1] https://lore.kernel.org/nova-gpu/DL3WPTVM033J.33RWYCZOC67Z1@kernel.org/