[pve-devel] [PATCH docs] pci-passthrough: add section about ID overrides

Nicholas Sherlock nick at nicksherlock.com
Fri Jan 28 11:16:42 CET 2022


From: Nicholas Sherlock <n.sherlock at gmail.com>

Signed-off-by: Nicholas Sherlock <n.sherlock at gmail.com>
---
 qm-pci-passthrough.adoc | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/qm-pci-passthrough.adoc b/qm-pci-passthrough.adoc
index edaa01f..fa6ba35 100644
--- a/qm-pci-passthrough.adoc
+++ b/qm-pci-passthrough.adoc
@@ -233,6 +233,24 @@ An example of PCIe passthrough with a GPU set to primary:
 # qm set VMID -hostpci0 02:00,pcie=on,x-vga=on
 ----
 
+.PCI ID overrides
+
+You can override the PCI vendor ID, device ID, and subsystem IDs that will be
+seen by the guest. This is useful if your device is a variant with an ID that
+your guest's drivers don't recognize, but you want to force those drivers to be
+loaded anyway (e.g. if you know your device shares the same chipset as a
+supported variant).
+
+The available options are `vendor-id`, `device-id`, `sub-vendor-id`, and
+`sub-device-id`. You can set any or all of these to override your device's
+default IDs.
+
+For example:
+
+----
+# qm set VMID -hostpci0 02:00,device-id=0x10f6,sub-vendor-id=0x0000
+----
+
 
 Other considerations
 ^^^^^^^^^^^^^^^^^^^^
-- 
2.35.0




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