On Fri, Oct 17, 2025 at 5:51 PM Roger Pau Monne <[email protected]>
wrote:

> It's currently impossible for passthrough devices on segment different than
> 0 to work correctly, as the PCI domain is not provided to
> xc_physdev_map_pirq_msi(), and hence it's unconditionally assumed that all
> devices are on segment 0.
>
> Adjust the call to xc_physdev_map_pirq_msi() to pass the PCI domain in the
> high 16bits of the bus parameter.  On versions of Xen where this is not
> supported the passed segment will be ignored and assume to be 0, no worse
> than the current state.
>
> Signed-off-by: Roger Pau Monné <[email protected]>
>

Reviewed-by: Edgar E. Iglesias <[email protected]>

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