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Commit 566ca99a authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Michael Ellerman
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powerpc/mm/radix: Add dummy radix_enabled() 



In this patch we add the radix Kconfig and conditional check.
radix_enabled() is written to always return 0 here. Once we have all
needed radix changes added, we will update this to an mmu_feature check.

We need to add this early so that we can get it all build in the early
stage.

Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent b0b5e9b1

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

+2 −0
Original line number Original line Diff line number Diff line
@@ -19,6 +19,8 @@ struct mmu_psize_def { 
	unsigned long	sllp;	/* SLB L||LP (exact mask to use in slbmte) */

	unsigned long	sllp;	/* SLB L||LP (exact mask to use in slbmte) */

};

};

extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];

extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];



#define radix_enabled() (0)

#endif /* __ASSEMBLY__ */

#endif /* __ASSEMBLY__ */





/* 64-bit classic hash table MMU */

/* 64-bit classic hash table MMU */

arch/powerpc/include/asm/mmu.h

+3 −0
Original line number Original line Diff line number Diff line
@@ -204,6 +204,9 @@ static inline void assert_pte_locked(struct mm_struct *mm, unsigned long addr) 
#  include <asm/mmu-8xx.h>

#  include <asm/mmu-8xx.h>

#endif

#endif





#ifndef radix_enabled

#define radix_enabled() (0)

#endif





#endif /* __KERNEL__ */

#endif /* __KERNEL__ */

#endif /* _ASM_POWERPC_MMU_H_ */
 
#endif /* _ASM_POWERPC_MMU_H_ */

arch/powerpc/platforms/Kconfig.cputype

+9 −0
Original line number Original line Diff line number Diff line
@@ -331,6 +331,15 @@ config PPC_STD_MMU_64 
	def_bool y

	def_bool y

	depends on PPC_STD_MMU && PPC64

	depends on PPC_STD_MMU && PPC64





config PPC_RADIX_MMU

	bool "Radix MMU Support"

	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

config PPC_MMU_NOHASH

	def_bool y

	def_bool y

	depends on !PPC_STD_MMU

	depends on !PPC_STD_MMU