[pve-devel] [PATCH docs 2/3] pci-passthrough: mention that `intel_iommu=on` is the default for 6.8+

[Aaron Lauterer]

Looking at the surrounding context, I would rework this section even 
more. Before I just apply my approach, what do you think about the 
following change?
---
diff --git a/qm-pci-passthrough.adoc b/qm-pci-passthrough.adoc
index 4f19f2a..ca07692 100644
--- a/qm-pci-passthrough.adoc
+++ b/qm-pci-passthrough.adoc
@@ -63,19 +63,18 @@ some configuration to enable PCI(e) passthrough.

  .IOMMU

-First, you will have to enable IOMMU support in your BIOS/UEFI. Usually the
+You will have to enable IOMMU support in your BIOS/UEFI. Usually the
  corresponding setting is called `IOMMU` or `VT-d`, but you should find 
the exact
  option name in the manual of your motherboard.

-For Intel CPUs, you also need to enable the IOMMU on the
-xref:sysboot_edit_kernel_cmdline[kernel command line] kernels by adding:
+With recent kernels (6.8 or newer), `IOMMU` should be enabled 
automatically.
+On older kernels, it was necessary to enable it on Intel CPUs via the
+xref:sysboot_edit_kernel_cmdline[kernel command line] by adding:

  ----
   intel_iommu=on
  ----

-For AMD CPUs it should be enabled automatically.
-
  .IOMMU Passthrough Mode

  If your hardware supports IOMMU passthrough mode, enabling this mode might



On  2024-10-22  12:19, Christoph Heiss wrote:
> Signed-off-by: Christoph Heiss <c.heiss at proxmox.com>
> ---
>   qm-pci-passthrough.adoc | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/qm-pci-passthrough.adoc b/qm-pci-passthrough.adoc
> index c3dd184..70e33f2 100644
> --- a/qm-pci-passthrough.adoc
> +++ b/qm-pci-passthrough.adoc
> @@ -74,7 +74,8 @@ xref:sysboot_edit_kernel_cmdline[kernel command line] kernels by adding:
>    intel_iommu=on
>   ----
>   
> -For AMD CPUs it should be enabled automatically.
> +For AMD CPUs it should be enabled automatically. For Intel CPUs this is also
> +the default since the 6.8 kernel series.
>   
>   .IOMMU Passthrough Mode
>