This removes the ability for the user to choose whether or not to
include support for the radix MMU in kernels built to run on 64-bit
Book 3S machines. Excluding radix support saves only about 25kiB
of text and 13kiB of data, a total of little over half a page.
Having the option expands the space of option combinations that
need to be tested, which is an ongoing burden on developers,
as well as increasing the number of #ifdefs in the code.
Given that the space savings are small, let's remove the option.
Signed-off-by: Paul Mackerras <pau...@ozlabs.org>
---
arch/powerpc/platforms/Kconfig.cputype | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/arch/powerpc/platforms/Kconfig.cputype
b/arch/powerpc/platforms/Kconfig.cputype
index ca2da30..52a71ca 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -333,13 +333,8 @@ config PPC_STD_MMU_64
depends on PPC_STD_MMU && PPC64
config PPC_RADIX_MMU
- bool "Radix MMU Support"
+ def_bool y
depends on PPC_BOOK3S_64
- default y
- help
- Enable support for the Power ISA 3.0 Radix style MMU. Currently this
- is only implemented by IBM Power9 CPUs, if you don't have one of them
- you can probably disable this.
config PPC_MMU_NOHASH
def_bool y
--
2.7.4
