diff options
Diffstat (limited to 'arch/powerpc/mm/book3s64')
| -rw-r--r-- | arch/powerpc/mm/book3s64/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/mm/book3s64/pkeys.c | 24 |
2 files changed, 16 insertions, 10 deletions
diff --git a/arch/powerpc/mm/book3s64/Makefile b/arch/powerpc/mm/book3s64/Makefile index fd393b8be14f..1b56d3af47d4 100644 --- a/arch/powerpc/mm/book3s64/Makefile +++ b/arch/powerpc/mm/book3s64/Makefile @@ -17,7 +17,7 @@ endif obj-$(CONFIG_TRANSPARENT_HUGEPAGE) += hash_hugepage.o obj-$(CONFIG_PPC_SUBPAGE_PROT) += subpage_prot.o obj-$(CONFIG_SPAPR_TCE_IOMMU) += iommu_api.o -obj-$(CONFIG_PPC_MEM_KEYS) += pkeys.o +obj-$(CONFIG_PPC_PKEY) += pkeys.o # Instrumenting the SLB fault path can lead to duplicate SLB entries KCOV_INSTRUMENT_slb.o := n diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c index b1d091a97611..7dc71f85683d 100644 --- a/arch/powerpc/mm/book3s64/pkeys.c +++ b/arch/powerpc/mm/book3s64/pkeys.c @@ -89,12 +89,14 @@ static int scan_pkey_feature(void) } } +#ifdef CONFIG_PPC_MEM_KEYS /* * Adjust the upper limit, based on the number of bits supported by * arch-neutral code. */ pkeys_total = min_t(int, pkeys_total, ((ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT) + 1)); +#endif return pkeys_total; } @@ -102,6 +104,7 @@ void __init pkey_early_init_devtree(void) { int pkeys_total, i; +#ifdef CONFIG_PPC_MEM_KEYS /* * We define PKEY_DISABLE_EXECUTE in addition to the arch-neutral * generic defines for PKEY_DISABLE_ACCESS and PKEY_DISABLE_WRITE. @@ -117,7 +120,7 @@ void __init pkey_early_init_devtree(void) BUILD_BUG_ON(__builtin_clzl(ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT) + __builtin_popcountl(ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT) != (sizeof(u64) * BITS_PER_BYTE)); - +#endif /* * Only P7 and above supports SPRN_AMR update with MSR[PR] = 1 */ @@ -223,14 +226,6 @@ out: return; } -void pkey_mm_init(struct mm_struct *mm) -{ - if (!mmu_has_feature(MMU_FTR_PKEY)) - return; - mm_pkey_allocation_map(mm) = initial_allocation_mask; - mm->context.execute_only_pkey = execute_only_key; -} - static inline u64 read_amr(void) { return mfspr(SPRN_AMR); @@ -257,6 +252,15 @@ static inline void write_iamr(u64 value) mtspr(SPRN_IAMR, value); } +#ifdef CONFIG_PPC_MEM_KEYS +void pkey_mm_init(struct mm_struct *mm) +{ + if (!mmu_has_feature(MMU_FTR_PKEY)) + return; + mm_pkey_allocation_map(mm) = initial_allocation_mask; + mm->context.execute_only_pkey = execute_only_key; +} + static inline void init_amr(int pkey, u8 init_bits) { u64 new_amr_bits = (((u64)init_bits & 0x3UL) << pkeyshift(pkey)); @@ -445,3 +449,5 @@ void arch_dup_pkeys(struct mm_struct *oldmm, struct mm_struct *mm) mm_pkey_allocation_map(mm) = mm_pkey_allocation_map(oldmm); mm->context.execute_only_pkey = oldmm->context.execute_only_pkey; } + +#endif /* CONFIG_PPC_MEM_KEYS */ |