Re: [PATCH v21 2/2] vpci: translate virtual PCI bus topology for guests

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Thu, May 08, 2025 at 06:46:07AM -0400, Stewart Hildebrand wrote:
> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
> 
> There are two originators for the PCI configuration space access:
> 1. The domain that owns physical host bridge: MMIO handlers are
> there so we can update vPCI register handlers with the values
> written by the hardware domain, e.g. physical view of the registers
> vs guest's view on the configuration space.
> 2. Guest access to the passed through PCI devices: we need to properly
> map virtual bus topology to the physical one, e.g. pass the configuration
> space access to the corresponding physical devices.
> 
> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
> Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>
> Signed-off-by: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>

Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

There's the addition of the ASSERTs in vpci_mmio_{read,write}() which
could do with an ARM maintainer Ack/RB.

Thanks, Roger.