El 21/11/22 a las 18:54, Bjorn Helgaas escribió:
Francisco, is the DMAR patch*also* required? We have several similar quirks for devices that use unexpected function numbers, but I don't remember any that require DMAR changes.
At least on the Lenovos X240 I was addressing this on it is. The bios (I installed the latest) does not add the RMRR for the fwTPM on the HECI.
Is there a way to add a kernel quirk to accomplish the same DMAR override?
I think you could add a quirk depending on both, ACPI device and PCI device. If you see a MSFT0101:00 device on a 8 Series HECI, you will need to add a mapping for function 7 of the HECI for the memory range used by the MSFT0101:00 device.
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