On Fri, Aug 12, 2022 at 12:43:02PM -0400, Stefan Berger wrote: > From: Jonathan McDowell <noodles@xxxxxx> > > On kexec file load, the Integrity Measurement Architecture (IMA) > subsystem may verify the IMA signature of the kernel and initramfs, and > measure it. The command line parameters passed to the kernel in the > kexec call may also be measured by IMA. > > A remote attestation service can verify a TPM quote based on the TPM > event log, the IMA measurement list and the TPM PCR data. This can > be achieved only if the IMA measurement log is carried over from the > current kernel to the next kernel across the kexec call. > > PowerPC and ARM64 both achieve this using device tree with a > "linux,ima-kexec-buffer" node. x86 platforms generally don't make use of > device tree, so use the setup_data mechanism to pass the IMA buffer to > the new kernel. > > Signed-off-by: Jonathan McDowell <noodles@xxxxxx> > Signed-off-by: Borislav Petkov <bp@xxxxxxx> > Reviewed-by: Mimi Zohar <zohar@xxxxxxxxxxxxx> # IMA function definitions > Link: https://lore.kernel.org/r/YmKyvlF3my1yWTvK@noodles-fedora-PC23Y6EG Is there any particular reason to keep sending a patch which is already upstream? -- Regards/Gruss, Boris. SUSE Software Solutions Germany GmbH GF: Ivo Totev, Andrew Myers, Andrew McDonald, Martje Boudien Moerman (HRB 36809, AG Nürnberg)
