On Fri, Aug 21, 2020 at 02:24:44AM +0200, Thomas Gleixner wrote:
> Devices on the VMD bus use their own MSI irq domain, but it is not
> distinguishable from regular PCI/MSI irq domains. This is required
> to exclude VMD devices from getting the irq domain pointer set by
> interrupt remapping.
>
> Override the default bus token.
>
> Signed-off-by: Thomas Gleixner
> Cc: Bjorn Helgaas
> Cc: Lorenzo Pieralisi
> Cc: Jonathan Derrick
> Cc: linux-...@vger.kernel.org
Acked-by: Bjorn Helgaas
> ---
> drivers/pci/controller/vmd.c |6 ++
> 1 file changed, 6 insertions(+)
>
> --- a/drivers/pci/controller/vmd.c
> +++ b/drivers/pci/controller/vmd.c
> @@ -579,6 +579,12 @@ static int vmd_enable_domain(struct vmd_
> return -ENODEV;
> }
>
> + /*
> + * Override the irq domain bus token so the domain can be distinguished
> + * from a regular PCI/MSI domain.
> + */
> + irq_domain_update_bus_token(vmd->irq_domain, DOMAIN_BUS_VMD_MSI);
> +
> pci_add_resource(, >resources[0]);
> pci_add_resource_offset(, >resources[1], offset[0]);
> pci_add_resource_offset(, >resources[2], offset[1]);
>
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