https://bugzilla.kernel.org/show_bug.cgi?id=200087

--- Comment #206 from Kai-Heng Feng (kai.heng.f...@canonical.com) ---
(In reply to Suravee Suthikulpanit from comment #204)
> For IOMMU-related part, as mentioned above, the IVRS table does not list the
> correct IOAPIC IDs. This would cause driver to disable interrupt-remapping
> support provided by HW IOMMU.
> Here the "ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2" boot option is
> needed to override the table. Permanent solution would be for laptop OEMs
> (e.g. Acer, Lenovo) to fix this in their BIOSes.

Is it possible to use DMI based quirk to override the tables?

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