On Thu, 10 Dec 2020 22:49:09 +0100 Heinrich Schuchardt <xypron.glpk@xxxxxx> wrote: > to test UEFI runtime services we have CONFIG_EFI_TEST which provides > /dev/efi_test and a bunch of IOCTLs for excercising the runtime services > (cf. drivers/firmware/efi/test/efi_test.h). > > Currently there is no user documentation for this ABI. > > Where should the documentation for the ABI be put in the documentation > tree? Is this Documentation/ABI/stable/? To date, nobody has documented ioctl() interfaces under Documentation/ABI; this probably isn't the time to start. The best way to document it might be to put your testing code in the tools/testing directory. You could also add something to the userspace-api manual as well, but that might increase your chances of being committed to maintaining that interface forever... Thanks, jon