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From: lyude@redhat.com
To: Alexandre Courbot <acourbot@nvidia.com>,
	Danilo Krummrich <dakr@kernel.org>,
	 Alice Ryhl <aliceryhl@google.com>,
	David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>
Cc: John Hubbard <jhubbard@nvidia.com>,
	Alistair Popple <apopple@nvidia.com>,
	 Joel Fernandes <joelagnelf@nvidia.com>,
	Timur Tabi <ttabi@nvidia.com>, Edwin Peer <epeer@nvidia.com>,
	 nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	 linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org
Subject: Re: [PATCH 6/9] gpu: nova-core: gsp: derive Zeroable for GspStaticConfigInfo
Date: Thu, 11 Dec 2025 17:07:15 -0500	[thread overview]
Message-ID: <a8276c36fe1638cc584262d0d722623987deb1ae.camel@redhat.com> (raw)
In-Reply-To: <20251208-nova-misc-v1-6-a3ce01376169@nvidia.com>

Reviewed-by: Lyude Paul <lyude@redhat.com>

On Mon, 2025-12-08 at 18:26 +0900, Alexandre Courbot wrote:
> We can derive `Zeroable` automatically instead of implementing it
> ourselves if we convert it from a tuple struct into a regular one.
> This
> removes an `unsafe` statement.
> 
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
> ---
>  drivers/gpu/nova-core/gsp/fw/commands.rs | 11 +++++------
>  1 file changed, 5 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/nova-core/gsp/fw/commands.rs
> b/drivers/gpu/nova-core/gsp/fw/commands.rs
> index 21be44199693..85465521de32 100644
> --- a/drivers/gpu/nova-core/gsp/fw/commands.rs
> +++ b/drivers/gpu/nova-core/gsp/fw/commands.rs
> @@ -107,12 +107,15 @@ unsafe impl FromBytes for PackedRegistryTable
> {}
>  
>  /// Payload of the `GetGspStaticInfo` command and message.
>  #[repr(transparent)]
> -pub(crate) struct
> GspStaticConfigInfo(bindings::GspStaticConfigInfo_t);
> +#[derive(Zeroable)]
> +pub(crate) struct GspStaticConfigInfo {
> +    inner: bindings::GspStaticConfigInfo_t,
> +}
>  
>  impl GspStaticConfigInfo {
>      /// Returns a bytes array containing the (hopefully) zero-
> terminated name of this GPU.
>      pub(crate) fn gpu_name_str(&self) -> [u8; 64] {
> -        self.0.gpuNameString
> +        self.inner.gpuNameString
>      }
>  }
>  
> @@ -122,7 +125,3 @@ unsafe impl AsBytes for GspStaticConfigInfo {}
>  // SAFETY: This struct only contains integer types for which all bit
> patterns
>  // are valid.
>  unsafe impl FromBytes for GspStaticConfigInfo {}
> -
> -// SAFETY: This struct only contains integer types and fixed-size
> arrays for which
> -// all bit patterns are valid.
> -unsafe impl Zeroable for GspStaticConfigInfo {}


  reply	other threads:[~2025-12-11 22:07 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-08  9:26 [PATCH 0/9] gpu: nova-core: miscellaneous improvements Alexandre Courbot
2025-12-08  9:26 ` [PATCH 1/9] gpu: nova-core: gsp: warn if data remains after processing a message Alexandre Courbot
2025-12-11 21:59   ` lyude
2025-12-08  9:26 ` [PATCH 2/9] gpu: nova-core: gsp: remove unnecessary Display impls Alexandre Courbot
2025-12-09  1:26   ` Alistair Popple
2025-12-11 22:02   ` lyude
2025-12-08  9:26 ` [PATCH 3/9] gpu: nova-core: gsp: simplify sequencer opcode parsing Alexandre Courbot
2025-12-11 22:04   ` lyude
2025-12-08  9:26 ` [PATCH 4/9] gpu: nova-core: gsp: remove unneeded sequencer trait Alexandre Courbot
2025-12-11 22:06   ` lyude
2025-12-08  9:26 ` [PATCH 5/9] gpu: nova-core: gsp: derive `Debug` on more sequencer types Alexandre Courbot
2025-12-11 22:06   ` lyude
2025-12-08  9:26 ` [PATCH 6/9] gpu: nova-core: gsp: derive Zeroable for GspStaticConfigInfo Alexandre Courbot
2025-12-11 22:07   ` lyude [this message]
2025-12-08  9:26 ` [PATCH 7/9] gpu: nova-core: firmware: fwsec: do not require bound device when unneeded Alexandre Courbot
2025-12-08 16:18   ` Timur Tabi
2025-12-08 16:51     ` John Hubbard
2025-12-08 17:55       ` Timur Tabi
2025-12-09  2:30         ` Alexandre Courbot
2025-12-11 22:08   ` lyude
2025-12-08  9:27 ` [PATCH 8/9] gpu: nova-core: use core library's CStr instead of kernel one Alexandre Courbot
2025-12-11 22:09   ` lyude
2025-12-08  9:27 ` [PATCH 9/9] gpu: nova-core: simplify str_from_null_terminated Alexandre Courbot
2025-12-11 22:10   ` lyude

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