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Date: Fri, 14 Aug 2026 14:12:57 +0200
Message-Id: <DKONOORZMS6U.3T4EB1Y2JYBU5@kernel.org>
Subject: Re: [PATCH 04/17] gpu: nova-core: allocate PCI MSI vector during
 probe
Cc: "Joel Fernandes" <joel@joelfernandes.org>, "Alexandre Courbot"
 <acourbot@nvidia.com>, "Timur Tabi" <ttabi@nvidia.com>, "Alistair Popple"
 <apopple@nvidia.com>, "Eliot Courtney" <ecourtney@nvidia.com>, "Shashank
 Sharma" <shashanks@nvidia.com>, "Zhi Wang" <zhiw@nvidia.com>, "David
 Airlie" <airlied@gmail.com>, "Simona Vetter" <simona@ffwll.ch>, "Bjorn
 Helgaas" <bhelgaas@google.com>, "Miguel Ojeda" <ojeda@kernel.org>, "Alex
 Gaynor" <alex.gaynor@gmail.com>, "Boqun Feng" <boqun.feng@gmail.com>, "Gary
 Guo" <gary@garyguo.net>, =?utf-8?q?Bj=C3=B6rn_Roy_Baron?=
 <bjorn3_gh@protonmail.com>, "Benno Lossin" <lossin@kernel.org>, "Andreas
 Hindborg" <a.hindborg@kernel.org>, "Alice Ryhl" <aliceryhl@google.com>,
 "Trevor Gross" <tmgross@umich.edu>, <nova-gpu@lists.linux.dev>, "LKML"
 <linux-kernel@vger.kernel.org>, "Joel Fernandes" <joelagnelf@nvidia.com>,
 "Will Pierce" <wpierce@nvidia.com>
To: "John Hubbard" <jhubbard@nvidia.com>
From: "Danilo Krummrich" <dakr@kernel.org>
References: <20260808031120.363869-1-jhubbard@nvidia.com>
 <20260808031120.363869-5-jhubbard@nvidia.com>
In-Reply-To: <20260808031120.363869-5-jhubbard@nvidia.com>

On Sat Aug 8, 2026 at 5:11 AM CEST, John Hubbard wrote:
> From: Joel Fernandes <joelagnelf@nvidia.com>
>
> Allocate a single PCI MSI interrupt vector in the probe path.
>
> Try MSI/MSI-X first. If that fails (possible in broken VFIO setups),
> fall back to INTx with a dev_warn so the issue is visible in dmesg.
> The allocation is devres-managed and automatically freed on unbind.
>
> Reviewed-by: Will Pierce <wpierce@nvidia.com>
> Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
> Signed-off-by: John Hubbard <jhubbard@nvidia.com>

I think this patch can just be dropped, the corresponding code is removed i=
n
patch 8 and AFAICS doesn't really serve a purpose in between.