On Thu, 6 Feb 2020 at 18:33, Heinrich Schuchardt <xypron.glpk@xxxxxx> wrote: > > On 2/6/20 3:03 PM, Ard Biesheuvel wrote: > > One of the advantages of using what basically amounts to a callback > > interface into the bootloader for loading the initrd is that it provides > > a natural place for the bootloader or firmware to measure the initrd > > contents while they are being passed to the kernel. > > > > Unfortunately, this is not a guarantee that the initrd will in fact be > > loaded and its /init invoked by the kernel, since the command line may > > contain the 'noinitrd' option, in which case the initrd is ignored, but > > this will not be reflected in the PCR that covers the initrd measurement. > > Does PCR here refer to the TPM Platform Configuration Register? > Yes.