Re: [PATCH] gpu: nova-core: move lifetime to `Bar0`

[Eliot Courtney]

On Wed Jun 3, 2026 at 2:04 AM JST, Gary Guo wrote:
> From: Gary Guo <gary@xxxxxxxxxxx>
>
> Currently Nova code uses `&'a Bar0` a lot. This is `&'a Mmio`, where `Mmio`
> represents an owned MMIO region; this type only exists as a target for
> `Deref` so `Bar` and `IoMem` can share code and should be avoided to be
> named directly. The upcoming I/O projection series would make `Io` trait
> much simpler to implement, and thuis the owned MMIO type would be removed
> in favour of direct `Io` implementation on `Bar` and `IoMem`.
>
> Add lifetime parameter to `Bar0<'a>` and change it to be alias of `&'a
> pci::Bar<'a, ..>`. This also prepares Nova core so that when I/O projection
> series land, this could be changed to using a MMIO view type directly which
> avoids double indirection.
>
> Signed-off-by: Gary Guo <gary@xxxxxxxxxxx>
> ---

Reviewed-by: Eliot Courtney <ecourtney@xxxxxxxxxx>