diff options
Diffstat (limited to 'arch/arm64/mm/mmu.c')
| -rw-r--r-- | arch/arm64/mm/mmu.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index b44992ec9643..4694cda823c9 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -118,6 +118,10 @@ static bool pgattr_change_is_safe(u64 old, u64 new) if ((old | new) & PTE_CONT) return false; + /* Transitioning from Global to Non-Global is safe */ + if (((old ^ new) == PTE_NG) && (new & PTE_NG)) + return true; + return ((old ^ new) & ~mask) == 0; } @@ -685,12 +689,14 @@ int kern_addr_valid(unsigned long addr) } #ifdef CONFIG_SPARSEMEM_VMEMMAP #if !ARM64_SWAPPER_USES_SECTION_MAPS -int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node) +int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, + struct vmem_altmap *altmap) { return vmemmap_populate_basepages(start, end, node); } #else /* !ARM64_SWAPPER_USES_SECTION_MAPS */ -int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node) +int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, + struct vmem_altmap *altmap) { unsigned long addr = start; unsigned long next; @@ -725,7 +731,8 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node) return 0; } #endif /* CONFIG_ARM64_64K_PAGES */ -void vmemmap_free(unsigned long start, unsigned long end) +void vmemmap_free(unsigned long start, unsigned long end, + struct vmem_altmap *altmap) { } #endif /* CONFIG_SPARSEMEM_VMEMMAP */ |