diff options
| -rw-r--r-- | arch/powerpc/include/asm/pgalloc-64.h | 6 | ||||
| -rw-r--r-- | arch/powerpc/mm/init_64.c | 43 |
2 files changed, 49 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pgalloc-64.h b/arch/powerpc/include/asm/pgalloc-64.h index 605f5c5398d1..292725cec2e3 100644 --- a/arch/powerpc/include/asm/pgalloc-64.h +++ b/arch/powerpc/include/asm/pgalloc-64.h @@ -11,6 +11,12 @@ #include <linux/cpumask.h> #include <linux/percpu.h> +struct vmemmap_backing { + struct vmemmap_backing *list; + unsigned long phys; + unsigned long virt_addr; +}; + /* * Functions that deal with pagetables that could be at any level of * the table need to be passed an "index_size" so they know how to diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index d7fa50b09b4a..e267f223fdff 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -252,6 +252,47 @@ static void __meminit vmemmap_create_mapping(unsigned long start, } #endif /* CONFIG_PPC_BOOK3E */ +struct vmemmap_backing *vmemmap_list; + +static __meminit struct vmemmap_backing * vmemmap_list_alloc(int node) +{ + static struct vmemmap_backing *next; + static int num_left; + + /* allocate a page when required and hand out chunks */ + if (!next || !num_left) { + next = vmemmap_alloc_block(PAGE_SIZE, node); + if (unlikely(!next)) { + WARN_ON(1); + return NULL; + } + num_left = PAGE_SIZE / sizeof(struct vmemmap_backing); + } + + num_left--; + + return next++; +} + +static __meminit void vmemmap_list_populate(unsigned long phys, + unsigned long start, + int node) +{ + struct vmemmap_backing *vmem_back; + + vmem_back = vmemmap_list_alloc(node); + if (unlikely(!vmem_back)) { + WARN_ON(1); + return; + } + + vmem_back->phys = phys; + vmem_back->virt_addr = start; + vmem_back->list = vmemmap_list; + + vmemmap_list = vmem_back; +} + int __meminit vmemmap_populate(struct page *start_page, unsigned long nr_pages, int node) { @@ -276,6 +317,8 @@ int __meminit vmemmap_populate(struct page *start_page, if (!p) return -ENOMEM; + vmemmap_list_populate(__pa(p), start, node); + pr_debug(" * %016lx..%016lx allocated at %p\n", start, start + page_size, p); |