diff options
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r-- | arch/powerpc/mm/mmu_context_iommu.c | 17 | ||||
-rw-r--r-- | arch/powerpc/mm/numa.c | 20 | ||||
-rw-r--r-- | arch/powerpc/mm/pgtable-radix.c | 8 | ||||
-rw-r--r-- | arch/powerpc/mm/slb.c | 2 |
4 files changed, 26 insertions, 21 deletions
diff --git a/arch/powerpc/mm/mmu_context_iommu.c b/arch/powerpc/mm/mmu_context_iommu.c index a4ca57612558..c9ee9e23845f 100644 --- a/arch/powerpc/mm/mmu_context_iommu.c +++ b/arch/powerpc/mm/mmu_context_iommu.c @@ -129,6 +129,7 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries, long i, j, ret = 0, locked_entries = 0; unsigned int pageshift; unsigned long flags; + unsigned long cur_ua; struct page *page = NULL; mutex_lock(&mem_list_mutex); @@ -177,7 +178,8 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries, } for (i = 0; i < entries; ++i) { - if (1 != get_user_pages_fast(ua + (i << PAGE_SHIFT), + cur_ua = ua + (i << PAGE_SHIFT); + if (1 != get_user_pages_fast(cur_ua, 1/* pages */, 1/* iswrite */, &page)) { ret = -EFAULT; for (j = 0; j < i; ++j) @@ -196,7 +198,7 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries, if (is_migrate_cma_page(page)) { if (mm_iommu_move_page_from_cma(page)) goto populate; - if (1 != get_user_pages_fast(ua + (i << PAGE_SHIFT), + if (1 != get_user_pages_fast(cur_ua, 1/* pages */, 1/* iswrite */, &page)) { ret = -EFAULT; @@ -210,20 +212,21 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries, } populate: pageshift = PAGE_SHIFT; - if (PageCompound(page)) { + if (mem->pageshift > PAGE_SHIFT && PageCompound(page)) { pte_t *pte; struct page *head = compound_head(page); unsigned int compshift = compound_order(head); + unsigned int pteshift; local_irq_save(flags); /* disables as well */ - pte = find_linux_pte(mm->pgd, ua, NULL, &pageshift); - local_irq_restore(flags); + pte = find_linux_pte(mm->pgd, cur_ua, NULL, &pteshift); /* Double check it is still the same pinned page */ if (pte && pte_page(*pte) == head && - pageshift == compshift) - pageshift = max_t(unsigned int, pageshift, + pteshift == compshift + PAGE_SHIFT) + pageshift = max_t(unsigned int, pteshift, PAGE_SHIFT); + local_irq_restore(flags); } mem->pageshift = min(mem->pageshift, pageshift); mem->hpas[i] = page_to_pfn(page) << PAGE_SHIFT; diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 0c7e05d89244..35ac5422903a 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1078,7 +1078,6 @@ static int prrn_enabled; static void reset_topology_timer(void); static int topology_timer_secs = 1; static int topology_inited; -static int topology_update_needed; /* * Change polling interval for associativity changes. @@ -1306,11 +1305,8 @@ int numa_update_cpu_topology(bool cpus_locked) struct device *dev; int weight, new_nid, i = 0; - if (!prrn_enabled && !vphn_enabled) { - if (!topology_inited) - topology_update_needed = 1; + if (!prrn_enabled && !vphn_enabled && topology_inited) return 0; - } weight = cpumask_weight(&cpu_associativity_changes_mask); if (!weight) @@ -1423,7 +1419,6 @@ int numa_update_cpu_topology(bool cpus_locked) out: kfree(updates); - topology_update_needed = 0; return changed; } @@ -1551,6 +1546,15 @@ int prrn_is_enabled(void) return prrn_enabled; } +void __init shared_proc_topology_init(void) +{ + if (lppaca_shared_proc(get_lppaca())) { + bitmap_fill(cpumask_bits(&cpu_associativity_changes_mask), + nr_cpumask_bits); + numa_update_cpu_topology(false); + } +} + static int topology_read(struct seq_file *file, void *v) { if (vphn_enabled || prrn_enabled) @@ -1608,10 +1612,6 @@ static int topology_update_init(void) return -ENOMEM; topology_inited = 1; - if (topology_update_needed) - bitmap_fill(cpumask_bits(&cpu_associativity_changes_mask), - nr_cpumask_bits); - return 0; } device_initcall(topology_update_init); diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index 7be99fd9af15..c879979faa73 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -1045,20 +1045,22 @@ void radix__ptep_set_access_flags(struct vm_area_struct *vma, pte_t *ptep, struct mm_struct *mm = vma->vm_mm; unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC); + + unsigned long change = pte_val(entry) ^ pte_val(*ptep); /* * To avoid NMMU hang while relaxing access, we need mark * the pte invalid in between. */ - if (atomic_read(&mm->context.copros) > 0) { + if ((change & _PAGE_RW) && atomic_read(&mm->context.copros) > 0) { unsigned long old_pte, new_pte; - old_pte = __radix_pte_update(ptep, ~0, 0); + old_pte = __radix_pte_update(ptep, _PAGE_PRESENT, _PAGE_INVALID); /* * new value of pte */ new_pte = old_pte | set; radix__flush_tlb_page_psize(mm, address, psize); - __radix_pte_update(ptep, 0, new_pte); + __radix_pte_update(ptep, _PAGE_INVALID, new_pte); } else { __radix_pte_update(ptep, 0, set); /* diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index 0b095fa54049..9f574e59d178 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -70,7 +70,7 @@ static inline void slb_shadow_update(unsigned long ea, int ssize, static inline void slb_shadow_clear(enum slb_index index) { - WRITE_ONCE(get_slb_shadow()->save_area[index].esid, 0); + WRITE_ONCE(get_slb_shadow()->save_area[index].esid, cpu_to_be64(index)); } static inline void create_shadowed_slbe(unsigned long ea, int ssize, |