RE: [PATCH v3] iommu/vt-d: Disable IOMMU by default on Lenovo ThinkPad P50s

"Tian, Kevin" <[email protected]> Mon, 27 Jul 2026 01:31:25 +0000

Newsgroups	dev.linux.lists.iommu,org.kernel.vger.linux-kernel
Message-ID	<CO1PR11MB48354FC225C295EFC745EEF48CCC2@CO1PR11MB4835.namprd11.prod.outlook.com>

> From: Oliver Lin <[email protected]>
> Sent: Monday, July 13, 2026 10:28 AM
> 
[...]
> That said, I understand the concern about disabling IOMMU functionality
> based on a single platform report. At the moment, my testing is limited
> to one ThinkPad P50s. I can provide the full DMAR, TPM, shutdown, and
> resume logs for both configurations, and I can also look for reports or
> testing from additional P50s systems before pursuing the quirk further.
> 
> Would additional reproductions from other P50s machines be required
> before a DMI quirk could be considered, or would you prefer that this
> remain a documented command-line workaround?
> 

This needs an official erratum disclosure from the vendor...