Re: [PATCH v2 1/2] tpm/tpm_tis: Disable interrupts for Framework Laptop Intel 12th gen

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat Aug 12, 2023 at 2:28 PM EEST, Grundik wrote:
> On Fri, 2023-08-11 at 23:01 +0300, Jarkko Sakkinen wrote:
> > 
> > 
> > Thanks for sharing your opinion. I'll take the necessary steps.
> > 
>
> I was thinking... Maybe I'm wrong, maybe I mistaking, but isnt this TPM
> located inside of the CPU chip? So that issue is not specific to laptop
> vendor or model, but its CPU-specific.

Nope, tpm_tis is MMIO interface for so called FIFO register interface,
it could be backed e.g. by SPI [*]. It is a physical layer for MMIO.
There's other backends too such as tpm_tis_i2c where kernel is directly
exposed to the physical layer.

> My MSI A12MT laptop has i5-1240P, Framework laptops mentioned in this
> thread, also has i5-1240P CPU. Unfortunately there are no such
> information about other affected models, but could it be just that CPU
> line?

[*] https://lkml.org/lkml/2023/8/14/1065

BR, Jarkko




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux