Re: [PATCH] iommu/vt-d: respect user override for intel_iommu=on on Lenovo ThinkPad P50s

[Baolu Lu]

On 7/2/26 18:31, Oliver Lin wrote:
> From: oliver<oliver@xxxxxxxxxxxxxxx>
>
> The current DMI quirk disables VT-d on ThinkPad P50s unconditionally,
> even when intel_iommu=on is explicitly requested via kernel command line.

The current driver doesn't have the DMI quirk, so this patch cannot be
applied to the tree as-is.

> This breaks kernel parameter precedence and user intent.
>
> Make the quirk conditional so that it does not override explicit user
> enabling of Intel IOMMU.
>
> Signed-off-by: Oliver<oliver@xxxxxxxxxxxxxxx>
> ---
>   drivers/iommu/intel/iommu.c | 6 +++++-
>   1 file changed, 5 insertions(+), 1 deletion(-)

Thanks,
baolu