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Date: Fri, 10 Jul 2026 01:21:40 +0200
Message-Id: <DJUFD2VMD5T0.1279IQJEATG1B@kernel.org>
Subject: Re: [PATCH v4 4/7] gpu: nova-core: transition gsp to TLV images
Cc: "Luis Chamberlain" <mcgrof@kernel.org>, "Russ Weight"
 <russ.weight@linux.dev>, "Miguel Ojeda" <ojeda@kernel.org>,
 <driver-core@lists.linux.dev>, <rust-for-linux@vger.kernel.org>,
 <nova-gpu@lists.linux.dev>, "Gary Guo" <gary@garyguo.net>, "Alexandre
 Courbot" <acourbot@nvidia.com>, "Eliot Courtney" <ecourtney@nvidia.com>,
 "John Hubbard" <jhubbard@nvidia.com>, "Zhi Wang" <zhiw@nvidia.com>
To: "Timur Tabi" <ttabi@nvidia.com>
From: "Danilo Krummrich" <dakr@kernel.org>
References: <20260709213915.520109-1-ttabi@nvidia.com>
 <20260709213915.520109-5-ttabi@nvidia.com>
In-Reply-To: <20260709213915.520109-5-ttabi@nvidia.com>

On Thu Jul 9, 2026 at 11:39 PM CEST, Timur Tabi wrote:
> +            let mut fw_vvec =3D VVec::from_elem(0u8, size, GFP_KERNEL).m=
ap_err(|_| ENOMEM)?;

Can you please add a patch introducing Vec::zeroed() instead that uses
__GFP_ZEROED, analogous to Box::zeroed()? I.e. something like this:

	pub fn zeroed(n: usize, flags: Flags) -> Result<Self, AllocError>
	where
	    T: Zeroable,
	{
	    let mut v =3D Self::with_capacity(n, flags | __GFP_ZERO)?;
	    // SAFETY:
	    // - `n <=3D capacity - len`: `with_capacity(n)` guarantees capacity >=
=3D n, len is 0.
	    // - All elements in `[0, n)` are initialized: `__GFP_ZERO` zeroes the=
 allocation,
	    //   and `T: Zeroable` guarantees all-zeroes is a valid bit pattern.
	    unsafe { v.inc_len(n) };
	    Ok(v)
	}