diff options
Diffstat (limited to 'arch/powerpc/include/asm/mmu-hash64.h')
| -rw-r--r-- | arch/powerpc/include/asm/mmu-hash64.h | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h index 9d9551840f4..7514ec2f854 100644 --- a/arch/powerpc/include/asm/mmu-hash64.h +++ b/arch/powerpc/include/asm/mmu-hash64.h @@ -373,38 +373,6 @@ extern void slb_set_size(u16 size); #ifndef __ASSEMBLY__ -#ifdef CONFIG_PPC_SUBPAGE_PROT -/* - * For the sub-page protection option, we extend the PGD with one of - * these. Basically we have a 3-level tree, with the top level being - * the protptrs array. To optimize speed and memory consumption when - * only addresses < 4GB are being protected, pointers to the first - * four pages of sub-page protection words are stored in the low_prot - * array. - * Each page of sub-page protection words protects 1GB (4 bytes - * protects 64k). For the 3-level tree, each page of pointers then - * protects 8TB. - */ -struct subpage_prot_table { - unsigned long maxaddr; /* only addresses < this are protected */ - unsigned int **protptrs[2]; - unsigned int *low_prot[4]; -}; - -#define SBP_L1_BITS (PAGE_SHIFT - 2) -#define SBP_L2_BITS (PAGE_SHIFT - 3) -#define SBP_L1_COUNT (1 << SBP_L1_BITS) -#define SBP_L2_COUNT (1 << SBP_L2_BITS) -#define SBP_L2_SHIFT (PAGE_SHIFT + SBP_L1_BITS) -#define SBP_L3_SHIFT (SBP_L2_SHIFT + SBP_L2_BITS) - -extern void subpage_prot_free(struct mm_struct *mm); -extern void subpage_prot_init_new_context(struct mm_struct *mm); -#else -static inline void subpage_prot_free(pgd_t *pgd) {} -static inline void subpage_prot_init_new_context(struct mm_struct *mm) { } -#endif /* CONFIG_PPC_SUBPAGE_PROT */ - typedef unsigned long mm_context_id_t; typedef struct { @@ -418,9 +386,6 @@ typedef struct { u16 sllp; /* SLB page size encoding */ #endif unsigned long vdso_base; -#ifdef CONFIG_PPC_SUBPAGE_PROT - struct subpage_prot_table spt; -#endif /* CONFIG_PPC_SUBPAGE_PROT */ } mm_context_t; |