5 Replies Latest reply on Mar 3, 2017 10:55 AM by Intel Corporation

    Turn off "IO non posted prefetching" via IIO CSR

    lukegorrie

      Is it possible to disable the processor feature "IO non posted prefetching" by manipulating IIO Configuration Registers (as defined in the Xeon E5 2600 v3 datasheet) on a running Linux machine?

       

      I understand that this is usually a BIOS setting but I am hoping to make an alternative implementation using the Linux 'setpci' utility for cases where the BIOS is not accessible or does not support this setting.