d/copyright: update years

[pve-docs.git] / qm-pci-passthrough.adoc

diff --git a/qm-pci-passthrough.adoc b/qm-pci-passthrough.adoc
index 1f2fd885732e4120879925141f9c10a895139a88..edaa01f5011945fdf8eb20d03a2469b6df2d9cf0 100644 (file)
--- a/qm-pci-passthrough.adoc
+++ b/qm-pci-passthrough.adoc
@@ -45,7 +45,11 @@ some configuration to enable PCI(e) passthrough.
 
 .IOMMU
 
-The IOMMU has to be activated on the
+First, the IOMMU support has to be enabled in your BIOS/UEFI. Most often, that
+options is named `IOMMU` or `VT-d`, but check the manual for your motherboard
+for the exact option you need to enable.
+
+Then, the IOMMU has to be activated on the
 xref:sysboot_edit_kernel_cmdline[kernel commandline].
 
 The command line parameters are:
@@ -55,12 +59,7 @@ The command line parameters are:
 ----
  intel_iommu=on
 ----
-* for AMD CPUs:
-+
-----
- amd_iommu=on
-----
-
+* for AMD CPUs it should be enabled automatically.
 
 .Kernel Modules
 
@@ -206,7 +205,9 @@ configuration, for example by executing:
 ----
 
 If your device has multiple functions (e.g., ``00:02.0`' and ``00:02.1`' ),
-you can pass them through all together with the shortened syntax ``00:02`'
+you can pass them through all together with the shortened syntax ``00:02`'.
+This is equivalent with checking the ``All Functions`' checkbox in the
+web-interface.
 
 There are some options to which may be necessary, depending on the device
 and guest OS: