# Re: \[PATCH 02/13\] PCI: rcar: Convert to MSI domains

- From: Marek Vasut \<hidden\>
- Date: 2021-02-28 18:49:08 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2021/02/6280940
- Thread: https://ratatoskr.run/linux-pci/2021/02/6278957/t.md

```text
On 2/25/21 4:10 PM, Marc Zyngier wrote:
> In anticipation of the removal of the msi_controller structure, convert
> the Rcar host controller driver to MSI domains.
>
> We end-up with the usual two domain structure, the top one being a
> generic PCI/MSI domain, the bottom one being Rcar-specific and handling
> the actual HW interrupt allocation.
>
> Also take the opportunity to get rid of the cargo-culted memory allocation
> for the MSI capture address. *ANY* sufficiently aligned address should
> be good enough, so use the physical address of the msi structure instead.

On R8A7795 with Intel 600p NVMe SSD and IWLwifi 6235 card,
Tested-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Thanks.

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```