Re: [PATCH v4 18/27] rust: io: make IoMem and ExclusiveIoMem lifetime-parameterized

[Alexandre Courbot]

On Fri May 22, 2026 at 8:34 AM JST, Danilo Krummrich wrote:
> Add a lifetime parameter to IoMem<'a, SIZE> and ExclusiveIoMem<'a,
> SIZE>, storing a &'a Device<Bound> reference to tie the mapping to the
> device's lifetime.
>
> This mirrors the pci::Bar<'a, SIZE> design and enables drivers to hold
> I/O memory mappings directly in their HRT private data, tied to the
> device lifetime.
>
> IoRequest::iomap_* methods now return the mapping directly instead of
> wrapping it in Devres. Callers that need device-managed revocation can
> call the new into_devres() method.
>
> Acked-by: Uwe Kleine-König <ukleinek@xxxxxxxxxx>
> Reviewed-by: Eliot Courtney <ecourtney@xxxxxxxxxx>
> Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx>

Reviewed-by: Alexandre Courbot <acourbot@xxxxxxxxxx>