[patch V2 24/46] PCI: vmd: Mark VMD irqdomain with DOMAIN_BUS_VMD_MSI
From: Thomas Gleixner <hidden>
Date: 2020-08-26 12:11:52
Also in:
linux-iommu, linux-pci, lkml, xen-devel
From: Thomas Gleixner <redacted> 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 <redacted> Acked-by: Bjorn Helgaas <bhelgaas@google.com> --- 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]);