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authorThomas Gleixner <tglx@linutronix.de>2020-08-26 14:16:52 +0300
committerThomas Gleixner <tglx@linutronix.de>2020-09-16 17:52:36 +0300
commitd7f954e54079b4bf6088956d59f43768ec71269a (patch)
tree674000dc5acf408ad0214eafe359d3a3efbc6363 /drivers/pci
parentc6c9e2838c5f0b94773511586123bcb125757f2a (diff)
downloadlinux-d7f954e54079b4bf6088956d59f43768ec71269a.tar.xz
PCI_vmd_Mark_VMD_irqdomain_with_DOMAIN_BUS_VMD_MSI
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> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Joerg Roedel <jroedel@suse.de> Link: https://lore.kernel.org/r/20200826112333.047315047@linutronix.de
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/controller/vmd.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c
index 411eed6fb2bc..aa1b12bac9a1 100644
--- a/drivers/pci/controller/vmd.c
+++ b/drivers/pci/controller/vmd.c
@@ -580,6 +580,12 @@ static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)
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]);