diff options
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/asm-offsets.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/entry_64.S | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 16 | ||||
| -rw-r--r-- | arch/powerpc/kernel/mce.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/mce_power.c | 10 | ||||
| -rw-r--r-- | arch/powerpc/kernel/paca.c | 18 | ||||
| -rw-r--r-- | arch/powerpc/kernel/process.c | 13 | ||||
| -rw-r--r-- | arch/powerpc/kernel/prom.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 2 |
9 files changed, 44 insertions, 25 deletions
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index cc05522f50bf..b823f484c640 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -218,10 +218,12 @@ int main(void) OFFSET(PACA_EXGEN, paca_struct, exgen); OFFSET(PACA_EXMC, paca_struct, exmc); OFFSET(PACA_EXNMI, paca_struct, exnmi); +#ifdef CONFIG_PPC_64S_HASH_MMU OFFSET(PACA_SLBSHADOWPTR, paca_struct, slb_shadow_ptr); OFFSET(SLBSHADOW_STACKVSID, slb_shadow, save_area[SLB_NUM_BOLTED - 1].vsid); OFFSET(SLBSHADOW_STACKESID, slb_shadow, save_area[SLB_NUM_BOLTED - 1].esid); OFFSET(SLBSHADOW_SAVEAREA, slb_shadow, save_area); +#endif OFFSET(LPPACA_PMCINUSE, lppaca, pmcregs_in_use); #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE OFFSET(PACA_PMCINUSE, paca_struct, pmcregs_in_use); diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 70cff7b49e17..9581906b5ee9 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -180,7 +180,7 @@ _GLOBAL(_switch) #endif ld r8,KSP(r4) /* new stack pointer */ -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU BEGIN_MMU_FTR_SECTION b 2f END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_RADIX) @@ -232,7 +232,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) slbmte r7,r0 isync 2: -#endif /* CONFIG_PPC_BOOK3S_64 */ +#endif /* CONFIG_PPC_64S_HASH_MMU */ clrrdi r7, r8, THREAD_SHIFT /* base of new stack */ /* Note: this uses SWITCH_FRAME_SIZE rather than INT_FRAME_SIZE diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 2acd7e66694e..a30f563bc7a8 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1367,11 +1367,15 @@ EXC_COMMON_BEGIN(data_access_common) addi r3,r1,STACK_FRAME_OVERHEAD andis. r0,r4,DSISR_DABRMATCH@h bne- 1f +#ifdef CONFIG_PPC_64S_HASH_MMU BEGIN_MMU_FTR_SECTION bl do_hash_fault MMU_FTR_SECTION_ELSE bl do_page_fault ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX) +#else + bl do_page_fault +#endif b interrupt_return_srr 1: bl do_break @@ -1414,6 +1418,7 @@ EXC_VIRT_BEGIN(data_access_slb, 0x4380, 0x80) EXC_VIRT_END(data_access_slb, 0x4380, 0x80) EXC_COMMON_BEGIN(data_access_slb_common) GEN_COMMON data_access_slb +#ifdef CONFIG_PPC_64S_HASH_MMU BEGIN_MMU_FTR_SECTION /* HPT case, do SLB fault */ addi r3,r1,STACK_FRAME_OVERHEAD @@ -1426,6 +1431,9 @@ MMU_FTR_SECTION_ELSE /* Radix case, access is outside page table range */ li r3,-EFAULT ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX) +#else + li r3,-EFAULT +#endif std r3,RESULT(r1) addi r3,r1,STACK_FRAME_OVERHEAD bl do_bad_segment_interrupt @@ -1460,11 +1468,15 @@ EXC_VIRT_END(instruction_access, 0x4400, 0x80) EXC_COMMON_BEGIN(instruction_access_common) GEN_COMMON instruction_access addi r3,r1,STACK_FRAME_OVERHEAD +#ifdef CONFIG_PPC_64S_HASH_MMU BEGIN_MMU_FTR_SECTION bl do_hash_fault MMU_FTR_SECTION_ELSE bl do_page_fault ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX) +#else + bl do_page_fault +#endif b interrupt_return_srr @@ -1494,6 +1506,7 @@ EXC_VIRT_BEGIN(instruction_access_slb, 0x4480, 0x80) EXC_VIRT_END(instruction_access_slb, 0x4480, 0x80) EXC_COMMON_BEGIN(instruction_access_slb_common) GEN_COMMON instruction_access_slb +#ifdef CONFIG_PPC_64S_HASH_MMU BEGIN_MMU_FTR_SECTION /* HPT case, do SLB fault */ addi r3,r1,STACK_FRAME_OVERHEAD @@ -1506,6 +1519,9 @@ MMU_FTR_SECTION_ELSE /* Radix case, access is outside page table range */ li r3,-EFAULT ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX) +#else + li r3,-EFAULT +#endif std r3,RESULT(r1) addi r3,r1,STACK_FRAME_OVERHEAD bl do_bad_segment_interrupt diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c index fd829f7f25a4..2503dd4713b9 100644 --- a/arch/powerpc/kernel/mce.c +++ b/arch/powerpc/kernel/mce.c @@ -586,7 +586,7 @@ void machine_check_print_event_info(struct machine_check_event *evt, mc_error_class[evt->error_class] : "Unknown"; printk("%sMCE: CPU%d: %s\n", level, evt->cpu, subtype); -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU /* Display faulty slb contents for SLB errors. */ if (evt->error_type == MCE_ERROR_TYPE_SLB && !in_guest) slb_dump_contents(local_paca->mce_faulty_slbs); diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c index cf5263b648fc..a48ff18d6d65 100644 --- a/arch/powerpc/kernel/mce_power.c +++ b/arch/powerpc/kernel/mce_power.c @@ -77,7 +77,7 @@ static bool mce_in_guest(void) } /* flush SLBs and reload */ -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU void flush_and_reload_slb(void) { if (early_radix_enabled()) @@ -99,7 +99,7 @@ void flush_and_reload_slb(void) void flush_erat(void) { -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU if (!early_cpu_has_feature(CPU_FTR_ARCH_300)) { flush_and_reload_slb(); return; @@ -114,7 +114,7 @@ void flush_erat(void) static int mce_flush(int what) { -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU if (what == MCE_FLUSH_SLB) { flush_and_reload_slb(); return 1; @@ -499,8 +499,10 @@ static int mce_handle_ierror(struct pt_regs *regs, unsigned long srr1, /* attempt to correct the error */ switch (table[i].error_type) { case MCE_ERROR_TYPE_SLB: +#ifdef CONFIG_PPC_64S_HASH_MMU if (local_paca->in_mce == 1) slb_save_contents(local_paca->mce_faulty_slbs); +#endif handled = mce_flush(MCE_FLUSH_SLB); break; case MCE_ERROR_TYPE_ERAT: @@ -588,8 +590,10 @@ static int mce_handle_derror(struct pt_regs *regs, /* attempt to correct the error */ switch (table[i].error_type) { case MCE_ERROR_TYPE_SLB: +#ifdef CONFIG_PPC_64S_HASH_MMU if (local_paca->in_mce == 1) slb_save_contents(local_paca->mce_faulty_slbs); +#endif if (mce_flush(MCE_FLUSH_SLB)) handled = 1; break; diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c index 4208b4044d12..39da688a9455 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -139,8 +139,7 @@ static struct lppaca * __init new_lppaca(int cpu, unsigned long limit) } #endif /* CONFIG_PPC_PSERIES */ -#ifdef CONFIG_PPC_BOOK3S_64 - +#ifdef CONFIG_PPC_64S_HASH_MMU /* * 3 persistent SLBs are allocated here. The buffer will be zero * initially, hence will all be invaild until we actually write them. @@ -169,8 +168,7 @@ static struct slb_shadow * __init new_slb_shadow(int cpu, unsigned long limit) return s; } - -#endif /* CONFIG_PPC_BOOK3S_64 */ +#endif /* CONFIG_PPC_64S_HASH_MMU */ #ifdef CONFIG_PPC_PSERIES /** @@ -226,7 +224,7 @@ void __init initialise_paca(struct paca_struct *new_paca, int cpu) new_paca->kexec_state = KEXEC_STATE_NONE; new_paca->__current = &init_task; new_paca->data_offset = 0xfeeeeeeeeeeeeeeeULL; -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU new_paca->slb_shadow_ptr = NULL; #endif @@ -307,7 +305,7 @@ void __init allocate_paca(int cpu) #ifdef CONFIG_PPC_PSERIES paca->lppaca_ptr = new_lppaca(cpu, limit); #endif -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU paca->slb_shadow_ptr = new_slb_shadow(cpu, limit); #endif #ifdef CONFIG_PPC_PSERIES @@ -328,7 +326,7 @@ void __init free_unused_pacas(void) paca_nr_cpu_ids = nr_cpu_ids; paca_ptrs_size = new_ptrs_size; -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU if (early_radix_enabled()) { /* Ugly fixup, see new_slb_shadow() */ memblock_phys_free(__pa(paca_ptrs[boot_cpuid]->slb_shadow_ptr), @@ -341,9 +339,9 @@ void __init free_unused_pacas(void) paca_ptrs_size + paca_struct_size, nr_cpu_ids); } +#ifdef CONFIG_PPC_64S_HASH_MMU void copy_mm_to_paca(struct mm_struct *mm) { -#ifdef CONFIG_PPC_BOOK3S mm_context_t *context = &mm->context; #ifdef CONFIG_PPC_MM_SLICES @@ -356,7 +354,5 @@ void copy_mm_to_paca(struct mm_struct *mm) get_paca()->mm_ctx_user_psize = context->user_psize; get_paca()->mm_ctx_sllp = context->sllp; #endif -#else /* !CONFIG_PPC_BOOK3S */ - return; -#endif } +#endif /* CONFIG_PPC_64S_HASH_MMU */ diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 5d2333d2a283..a64cfbb85ca2 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1240,7 +1240,7 @@ struct task_struct *__switch_to(struct task_struct *prev, { struct thread_struct *new_thread, *old_thread; struct task_struct *last; -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU struct ppc64_tlb_batch *batch; #endif @@ -1249,7 +1249,7 @@ struct task_struct *__switch_to(struct task_struct *prev, WARN_ON(!irqs_disabled()); -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU batch = this_cpu_ptr(&ppc64_tlb_batch); if (batch->active) { current_thread_info()->local_flags |= _TLF_LAZY_MMU; @@ -1328,6 +1328,7 @@ struct task_struct *__switch_to(struct task_struct *prev, */ #ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU /* * This applies to a process that was context switched while inside * arch_enter_lazy_mmu_mode(), to re-activate the batch that was @@ -1339,6 +1340,7 @@ struct task_struct *__switch_to(struct task_struct *prev, batch = this_cpu_ptr(&ppc64_tlb_batch); batch->active = 1; } +#endif /* * Math facilities are masked out of the child MSR in copy_thread. @@ -1689,7 +1691,7 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) static void setup_ksp_vsid(struct task_struct *p, unsigned long sp) { -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU unsigned long sp_vsid; unsigned long llp = mmu_psize_defs[mmu_linear_psize].sllp; @@ -2333,10 +2335,9 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) * the heap, we can put it above 1TB so it is backed by a 1TB * segment. Otherwise the heap will be in the bottom 1TB * which always uses 256MB segments and this may result in a - * performance penalty. We don't need to worry about radix. For - * radix, mmu_highuser_ssize remains unchanged from 256MB. + * performance penalty. */ - if (!is_32bit_task() && (mmu_highuser_ssize == MMU_SEGSIZE_1T)) + if (!radix_enabled() && !is_32bit_task() && (mmu_highuser_ssize == MMU_SEGSIZE_1T)) base = max_t(unsigned long, mm->brk, 1UL << SID_SHIFT_1T); #endif diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 2e67588f6f6e..75678ff04dd7 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -231,7 +231,7 @@ static void __init check_cpu_pa_features(unsigned long node) ibm_pa_features, ARRAY_SIZE(ibm_pa_features)); } -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU static void __init init_mmu_slb_size(unsigned long node) { const __be32 *slb_size_ptr; diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 9a493796ce66..703a2e6ab08d 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -886,7 +886,7 @@ void __init setup_per_cpu_areas(void) atom_size = SZ_1M; } else if (radix_enabled()) { atom_size = PAGE_SIZE; - } else { + } else if (IS_ENABLED(CONFIG_PPC_64S_HASH_MMU)) { /* * Linear mapping is one of 4K, 1M and 16M. For 4K, no need * to group units. For larger mappings, use 1M atom which |