On Thu, 2017-10-19 at 04:08:43 UTC, Michael Ellerman wrote: > CONFIG_PPC_STD_MMU_64 indicates support for the "standard" powerpc MMU > on 64-bit CPUs. The "standard" MMU refers to the hash page table MMU > found in "server" processors, from IBM mainly. > > Currently CONFIG_PPC_STD_MMU_64 is == CONFIG_PPC_BOOK3S_64. While it's > annoying to have two symbols that always have the same value, it's not > quite annoying enough to bother removing one. > > However with the arrival of Power9, we now have the situation where > CONFIG_PPC_STD_MMU_64 is enabled, but the kernel is running using the > Radix MMU - *not* the "standard" MMU. So it is now actively confusing > to use it, because it implies that code is disabled or inactive when > the Radix MMU is in use, however that is not necessarily true. > > So s/CONFIG_PPC_STD_MMU_64/CONFIG_PPC_BOOK3S_64/, and do some minor > formatting updates of some of the affected lines. > > This will be a pain for backports, but c'est la vie. > > Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
Applied to powerpc next. https://git.kernel.org/powerpc/c/4e003747043d57aa75c9762fa148ef cheers
