On Wed, Mar 09, 2022 at 10:40:03AM +0000, Jonathan McDowell wrote: > (This is an RFC to see if the approach is generally acceptable; unlike > the previous driver this exposes the information purely as read-only > status information, so userspace can make an informed decision about the > system state without having to poke about in /dev/mem. There are still a > few extra registers I'm trying to dig up information for before a proper > submission.) > > This module provides read-only access to the Intel TXT (Trusted > Execution Technology) status registers, allowing userspace to determine > the status of measured boot and whether the dynamic root of trust for > measurement (DRTM) has been fully enabled. > > Tools such as txt-stat from tboot > <https://sourceforge.net/projects/tboot/> can make use of this driver to > display state rather than relying on access to /dev/mem. > > See Documentation/x86/intel_txt.rst for more information about Intel > TXT. > > Signed-off-by: Jonathan McDowell <noodles@xxxxxx> > --- > arch/x86/include/asm/txt.h | 34 +++++ > drivers/platform/x86/intel/Kconfig | 14 ++ > drivers/platform/x86/intel/Makefile | 2 + > drivers/platform/x86/intel/txt_sysfs.c | 185 +++++++++++++++++++++++++ No Documentation/ABI/ entry for your new sysfs entry? How can we evaluate if this is a good api then? Wait, I don't see any sysfs code in here, are you sure you sent a viable patch? confused, greg k-h
