Hi Mike, On 9/16/20 12:35 AM, Mike Rapoport wrote: > From: Mike Rapoport <rppt@xxxxxxxxxxxxx> > > > Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx> > --- > arch/Kconfig | 7 + > arch/x86/Kconfig | 1 + > include/uapi/linux/magic.h | 1 + > include/uapi/linux/secretmem.h | 8 + > kernel/sys_ni.c | 2 + > mm/Kconfig | 4 + > mm/Makefile | 1 + > mm/secretmem.c | 264 +++++++++++++++++++++++++++++++++ > 8 files changed, 288 insertions(+) > create mode 100644 include/uapi/linux/secretmem.h > create mode 100644 mm/secretmem.c > > diff --git a/arch/Kconfig b/arch/Kconfig > index af14a567b493..8d161bd4142d 100644 > --- a/arch/Kconfig > +++ b/arch/Kconfig > @@ -975,6 +975,13 @@ config HAVE_SPARSE_SYSCALL_NR > config ARCH_HAS_VDSO_DATA > bool > > +config HAVE_SECRETMEM_UNCACHED > + bool > + help > + An architecture can select this if its semantics of non-cached > + mappings can be used to prevent speculative loads and it is > + useful for secret protection. Please use tabs instead of spaces for indentation. > + > source "kernel/gcov/Kconfig" > > source "scripts/gcc-plugins/Kconfig" > diff --git a/mm/Kconfig b/mm/Kconfig > index 6c974888f86f..70cfc20d7caa 100644 > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -868,4 +868,8 @@ config ARCH_HAS_HUGEPD > config MAPPING_DIRTY_HELPERS > bool > > +config SECRETMEM > + def_bool ARCH_HAS_SET_DIRECT_MAP && !EMBEDDED Use tab above for indentation. > + select GENERIC_ALLOCATOR > + > endmenu thanks. -- ~Randy
