Re: [PATCH 3/4] rust/bindgen_parameters: Mark s390 types as opaque to prevent repr conflicts

[Gary Guo]

On Tue May 12, 2026 at 11:59 AM BST, Jan Polensky wrote:
> Bindgen attempts to generate Rust layouts for a number of s390 structs
> that are packed but contain, or transitively contain, aligned fields.
> Rust rejects such layouts with E0588 ("packed type cannot transitively
> contain a #[repr(align)] type").
> 
> Add the affected s390 types to the opaque type list so bindgen emits
> opaque blob types instead of full representations. This matches existing
> workarounds for x86 types such as alt_instr and x86_msi_data.
> 
> References: https://lore.kernel.org/all/e5c7aa10-590d-0d20-dd3b-385bee2377e7@xxxxxxxxx/
> Signed-off-by: Jan Polensky <japo@xxxxxxxxxxxxx>

Reviewed-by: Gary Guo <gary@xxxxxxxxxxx>

> ---
>  rust/bindgen_parameters | 7 +++++++
>  1 file changed, 7 insertions(+)