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Date: Fri, 23 Jan 2026 17:23:19 +0100
Message-Id: <DFW3VSJRDEOG.374RHLBPHFVVZ@kernel.org>
Subject: Re: [PATCH v2 1/2] gpu: nova-core: check for overflow to
 DMATRFBASE1
Cc: "ojeda@kernel.org" <ojeda@kernel.org>, "Alexandre Courbot"
 <acourbot@nvidia.com>, "nouveau@lists.freedesktop.org"
 <nouveau@lists.freedesktop.org>, "Joel Fernandes" <joelagnelf@nvidia.com>,
 "John Hubbard" <jhubbard@nvidia.com>, "rust-for-linux@vger.kernel.org"
 <rust-for-linux@vger.kernel.org>
To: "Timur Tabi" <ttabi@nvidia.com>
From: "Danilo Krummrich" <dakr@kernel.org>
References: <20260107201647.2490140-1-ttabi@nvidia.com>
 <be1f31d3036fa12af42133dc09fa22c27cd71764.camel@nvidia.com>
In-Reply-To: <be1f31d3036fa12af42133dc09fa22c27cd71764.camel@nvidia.com>

On Fri Jan 23, 2026 at 12:44 AM CET, Timur Tabi wrote:
> On Wed, 2026-01-07 at 14:16 -0600, Timur Tabi wrote:
>> The NV_PFALCON_FALCON_DMATRFBASE/1 register pair supports DMA addresses
>> up to 49 bits only, but the write to DMATRFBASE1 could exceed that.
>> To mitigate, check first that the DMA address will fit.
>>=20
>> Reviewed-by: John Hubbard <jhubbard@nvidia.com>
>> Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
>> Fixes: 69f5cd67ce41 ("gpu: nova-core: add falcon register definitions an=
d base code")
>> Signed-off-by: Timur Tabi <ttabi@nvidia.com>
>
> Danilo, is it too late to make 6.20 with this patch?

This patch is already in drm-rust-next.