| Date | Fri, 21 Aug 2020 02:24:44 +0200 | From | Thomas Gleixner <> | Subject | [patch RFC 20/38] PCI: vmd: Mark VMD irqdomain with DOMAIN_BUS_VMD_MSI |
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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 <tglx@linutronix.de> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Jonathan Derrick <jonathan.derrick@intel.com> Cc: linux-pci@vger.kernel.org --- 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, &vmd->resources[0]); pci_add_resource_offset(&resources, &vmd->resources[1], offset[0]); pci_add_resource_offset(&resources, &vmd->resources[2], offset[1]);
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