Re: [PATCH v3] iommu/vt-d: Disable IOMMU by default on Lenovo ThinkPad P50s
"Oliver Lin" <[email protected]> Mon, 27 Jul 2026 11:21:56 +0800
| Newsgroups | dev.linux.lists.iommu,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On 27/7/2026 09:31, Tian, Kevin wrote: > This needs an official erratum disclosure from the vendor... Thanks for the clarification. Could you please advise whether this issue should be treated as an Intel VT-d erratum or a Lenovo firmware issue? The symptom is: - ThinkPad P50s with VT-d enabled cannot fully power off. - Adding intel_iommu=off resolves the issue. - The issue is reproducible on this platform. If Intel erratum is not applicable, would a Lenovo firmware confirmation be sufficient for adding a platform quirk?