On Thu, Dec 6, 2018 at 3:01 PM Chris Murphy <chris@xxxxxxxxxxxxxxxxx> wrote: > [ 2.066860] tpm_crb MSFT0101:00: can't request region for resource > [mem 0x3af5b000-0x3af5b02f] > [ 2.066916] tpm_crb: probe of MSFT0101:00 failed with error -16 > [ 2.324683] ima: No TPM chip found, activating TPM-bypass! Your firmware is marking the region as ACPI_NVS and the kernel refuses to allow a driver to allocate it. The "obvious" thing to do here is for the kernel to allow drivers to allocate ACPI_NVS regions (since Windows obviously works), but there's then some complexity over the special-cased NVS save/restore code over suspend/resume.
