On 8/26/21 9:17 AM, Jarkko Sakkinen wrote: >> I would prefer to see this listed in Documentation/filesystems/proc.rst >> as an optional field, depending on CONFIG_X86_SGX. >> Or at least put a reference in proc.rst to this doc file and its >> supplemental fields. >> >> thanks. > I *can* put it there but I did have reason not to, i.e. these attributes > are neither there: > > DirectMap4k: 3930904 kB > DirectMap2M: 29440000 kB > DirectMap1G: 1048576 kB > > And they are implemented in arch specific code. > > Actually they are undocumented, e.g. > > $ git grep DirectMap4k > arch/powerpc/mm/book3s64/pgtable.c: seq_printf(m, "DirectMap4k: %8lu kB\n", > arch/s390/mm/pageattr.c: seq_printf(m, "DirectMap4k: %8lu kB\n", > arch/x86/mm/pat/set_memory.c: seq_printf(m, "DirectMap4k: %8lu kB\n", Yeah, we need to add some arch-specific sections to the documentation. That *could* just be a reference over to a new file: Documentation/x86/meminfo.rst along with whatever other arches provide their own fields too.
