Commit e21fc93b authored Jul 13, 2016 by Aneesh Kumar K.V Committed by Michael Ellerman Jul 17, 2016

powerpc/mm: Compile out radix related functions if RADIX_MMU is disabled

Currently we depend on mmu_has_feature to evalute to zero based on
MMU_FTRS_POSSIBLE mask. In a later patch, we want to update
radix_enabled() to runtime update the conditional operation to a jump
instruction. This implies we cannot depend on MMU_FTRS_POSSIBLE mask.
Instead define radix_enabled to return 0 if RADIX_MMU is not enabled.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent 66c570f5

arch/powerpc/include/asm/book3s/64/mmu.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -23,7 +23,12 @@ struct mmu_psize_def {
		};
		extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];

		#ifdef CONFIG_PPC_RADIX_MMU
		#define radix_enabled() mmu_has_feature(MMU_FTR_RADIX)
		#else
		#define radix_enabled() (0)
		#endif


		#endif /* __ASSEMBLY__ */