On Sun, Oct 14, 2018 at 12:05:41AM +0200, Borislav Petkov wrote: > On Sat, Oct 13, 2018 at 05:45:51PM -0400, Masayoshi Mizuma wrote: > > Yes, but I think we need to arrange the Chao's SRAT parsing to be used > > from kernel_randomize_memory() because Chao's approach needs the SRAT > > parsing before extract kernel and the padding size calculation needs > > the parsing in start_kernel(), so they are living in different life > > cycle and space. > > Or you would like to pass some info from the compressed kernel to kernel > proper? > > For example, something like the passing in add_e820ext() and the consumtion > in parse_setup_data(): > > switch (data_type) { > case SETUP_E820_EXT: > e820__memory_setup_extended(pa_data, data_len); > > So info you need for your padding gets collected in > arch/x86/boot/compressed/acpitb.c and you consume it in > kernel_randomize_memory()? > > Would that work? It's nice idea! Thank you so much! - Masa