Re: [PATCH 1/4] rust: sizes: add SZ_4G constant

Gary Guo
2026-04-20T15:15:29Z

On Fri Apr 17, 2026 at 2:05 AM BST, Alvin Sun wrote:
> Add SZ_4G constant defined as SZ_2G * 2. This constant will be used by
> the Tyr driver for calculating user and kernel VA layout.
>
> Signed-off-by: Alvin Sun <alvin.sun@linux.dev>
> ---
> rust/kernel/sizes.rs | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/rust/kernel/sizes.rs b/rust/kernel/sizes.rs
> index 661e680d93306..872f5bb181ecf 100644
> --- a/rust/kernel/sizes.rs
> +++ b/rust/kernel/sizes.rs
> @@ -48,3 +48,5 @@
> pub const SZ_1G: usize = bindings::SZ_1G as usize;
> /// 0x80000000
> pub const SZ_2G: usize = bindings::SZ_2G as usize;
> +/// 0x100000000
> +pub const SZ_4G: usize = SZ_2G * 2;

How is this supposed to work with 32-bit arch?

Best,
Gary