On 22/09/2016 19:07, Borislav Petkov wrote: >> Which paragraph? > "Linux relies on BIOS to set this bit if BIOS has determined that the > reduction in the physical address space as a result of enabling memory > encryption..." > > Basically, you can enable SME in the BIOS and you're all set. That's not how I read it. I just figured that the BIOS has some magic things high in the physical address space and if you reduce the physical address space the BIOS (which is called from e.g. EFI runtime services) would have problems with that. Paolo -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html