diff options
Diffstat (limited to 'arch/powerpc/mm/book3s64/radix_pgtable.c')
| -rw-r--r-- | arch/powerpc/mm/book3s64/radix_pgtable.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c index 311e2112d782..be523e5fe9c5 100644 --- a/arch/powerpc/mm/book3s64/radix_pgtable.c +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c @@ -363,7 +363,7 @@ static int __meminit create_physical_mapping(unsigned long start, } #ifdef CONFIG_KFENCE -static inline phys_addr_t alloc_kfence_pool(void) +static __init phys_addr_t alloc_kfence_pool(void) { phys_addr_t kfence_pool; @@ -393,7 +393,7 @@ no_kfence: return 0; } -static inline void map_kfence_pool(phys_addr_t kfence_pool) +static __init void map_kfence_pool(phys_addr_t kfence_pool) { if (!kfence_pool) return; @@ -976,7 +976,7 @@ int __meminit radix__vmemmap_create_mapping(unsigned long start, return 0; } - +#ifdef CONFIG_ARCH_WANT_OPTIMIZE_DAX_VMEMMAP bool vmemmap_can_optimize(struct vmem_altmap *altmap, struct dev_pagemap *pgmap) { if (radix_enabled()) @@ -984,6 +984,7 @@ bool vmemmap_can_optimize(struct vmem_altmap *altmap, struct dev_pagemap *pgmap) return false; } +#endif int __meminit vmemmap_check_pmd(pmd_t *pmdp, int node, unsigned long addr, unsigned long next) @@ -1120,6 +1121,26 @@ int __meminit radix__vmemmap_populate(unsigned long start, unsigned long end, in pmd_t *pmd; pte_t *pte; + /* + * If altmap is present, Make sure we align the start vmemmap addr + * to PAGE_SIZE so that we calculate the correct start_pfn in + * altmap boundary check to decide whether we should use altmap or + * RAM based backing memory allocation. Also the address need to be + * aligned for set_pte operation. If the start addr is already + * PMD_SIZE aligned and with in the altmap boundary then we will + * try to use a pmd size altmap mapping else we go for page size + * mapping. + * + * If altmap is not present, align the vmemmap addr to PMD_SIZE and + * always allocate a PMD size page for vmemmap backing. + * + */ + + if (altmap) + start = ALIGN_DOWN(start, PAGE_SIZE); + else + start = ALIGN_DOWN(start, PMD_SIZE); + for (addr = start; addr < end; addr = next) { next = pmd_addr_end(addr, end); @@ -1146,7 +1167,7 @@ int __meminit radix__vmemmap_populate(unsigned long start, unsigned long end, in * we fallback to RAM for vmemmap allocation. */ if (altmap && (!IS_ALIGNED(addr, PMD_SIZE) || - altmap_cross_boundary(altmap, addr, PMD_SIZE))) { + altmap_cross_boundary(altmap, addr, PMD_SIZE))) { /* * make sure we don't create altmap mappings * covering things outside the device. @@ -1159,7 +1180,7 @@ int __meminit radix__vmemmap_populate(unsigned long start, unsigned long end, in vmemmap_set_pmd(pmd, p, node, addr, next); pr_debug("PMD_SIZE vmemmap mapping\n"); continue; - } else if (altmap) { + } else { /* * A vmemmap block allocation can fail due to * alignment requirements and we trying to align @@ -1412,7 +1433,7 @@ unsigned long radix__pmd_hugepage_update(struct mm_struct *mm, unsigned long add unsigned long old; #ifdef CONFIG_DEBUG_VM - WARN_ON(!radix__pmd_trans_huge(*pmdp) && !pmd_devmap(*pmdp)); + WARN_ON(!radix__pmd_trans_huge(*pmdp)); assert_spin_locked(pmd_lockptr(mm, pmdp)); #endif @@ -1429,7 +1450,7 @@ unsigned long radix__pud_hugepage_update(struct mm_struct *mm, unsigned long add unsigned long old; #ifdef CONFIG_DEBUG_VM - WARN_ON(!pud_devmap(*pudp)); + WARN_ON(!pud_trans_huge(*pudp)); assert_spin_locked(pud_lockptr(mm, pudp)); #endif @@ -1447,7 +1468,6 @@ pmd_t radix__pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long addre VM_BUG_ON(address & ~HPAGE_PMD_MASK); VM_BUG_ON(radix__pmd_trans_huge(*pmdp)); - VM_BUG_ON(pmd_devmap(*pmdp)); /* * khugepaged calls this for normal pmd */ |