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Diffstat (limited to 'arch/x86/mm/init_64.c')
-rw-r--r--arch/x86/mm/init_64.c94
1 files changed, 52 insertions, 42 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 4a837289f2ad..1ab42c852069 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -772,12 +772,12 @@ static void update_end_of_memory_vars(u64 start, u64 size)
}
}
-int add_pages(int nid, unsigned long start_pfn,
- unsigned long nr_pages, bool want_memblock)
+int add_pages(int nid, unsigned long start_pfn, unsigned long nr_pages,
+ struct vmem_altmap *altmap, bool want_memblock)
{
int ret;
- ret = __add_pages(nid, start_pfn, nr_pages, want_memblock);
+ ret = __add_pages(nid, start_pfn, nr_pages, altmap, want_memblock);
WARN_ON_ONCE(ret);
/* update max_pfn, max_low_pfn and high_memory */
@@ -787,24 +787,24 @@ int add_pages(int nid, unsigned long start_pfn,
return ret;
}
-int arch_add_memory(int nid, u64 start, u64 size, bool want_memblock)
+int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
+ bool want_memblock)
{
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
init_memory_mapping(start, start + size);
- return add_pages(nid, start_pfn, nr_pages, want_memblock);
+ return add_pages(nid, start_pfn, nr_pages, altmap, want_memblock);
}
-EXPORT_SYMBOL_GPL(arch_add_memory);
#define PAGE_INUSE 0xFD
-static void __meminit free_pagetable(struct page *page, int order)
+static void __meminit free_pagetable(struct page *page, int order,
+ struct vmem_altmap *altmap)
{
unsigned long magic;
unsigned int nr_pages = 1 << order;
- struct vmem_altmap *altmap = to_vmem_altmap((unsigned long) page);
if (altmap) {
vmem_altmap_free(altmap, nr_pages);
@@ -826,7 +826,8 @@ static void __meminit free_pagetable(struct page *page, int order)
free_pages((unsigned long)page_address(page), order);
}
-static void __meminit free_pte_table(pte_t *pte_start, pmd_t *pmd)
+static void __meminit free_pte_table(pte_t *pte_start, pmd_t *pmd,
+ struct vmem_altmap *altmap)
{
pte_t *pte;
int i;
@@ -838,13 +839,14 @@ static void __meminit free_pte_table(pte_t *pte_start, pmd_t *pmd)
}
/* free a pte talbe */
- free_pagetable(pmd_page(*pmd), 0);
+ free_pagetable(pmd_page(*pmd), 0, altmap);
spin_lock(&init_mm.page_table_lock);
pmd_clear(pmd);
spin_unlock(&init_mm.page_table_lock);
}
-static void __meminit free_pmd_table(pmd_t *pmd_start, pud_t *pud)
+static void __meminit free_pmd_table(pmd_t *pmd_start, pud_t *pud,
+ struct vmem_altmap *altmap)
{
pmd_t *pmd;
int i;
@@ -856,13 +858,14 @@ static void __meminit free_pmd_table(pmd_t *pmd_start, pud_t *pud)
}
/* free a pmd talbe */
- free_pagetable(pud_page(*pud), 0);
+ free_pagetable(pud_page(*pud), 0, altmap);
spin_lock(&init_mm.page_table_lock);
pud_clear(pud);
spin_unlock(&init_mm.page_table_lock);
}
-static void __meminit free_pud_table(pud_t *pud_start, p4d_t *p4d)
+static void __meminit free_pud_table(pud_t *pud_start, p4d_t *p4d,
+ struct vmem_altmap *altmap)
{
pud_t *pud;
int i;
@@ -874,7 +877,7 @@ static void __meminit free_pud_table(pud_t *pud_start, p4d_t *p4d)
}
/* free a pud talbe */
- free_pagetable(p4d_page(*p4d), 0);
+ free_pagetable(p4d_page(*p4d), 0, altmap);
spin_lock(&init_mm.page_table_lock);
p4d_clear(p4d);
spin_unlock(&init_mm.page_table_lock);
@@ -882,7 +885,7 @@ static void __meminit free_pud_table(pud_t *pud_start, p4d_t *p4d)
static void __meminit
remove_pte_table(pte_t *pte_start, unsigned long addr, unsigned long end,
- bool direct)
+ struct vmem_altmap *altmap, bool direct)
{
unsigned long next, pages = 0;
pte_t *pte;
@@ -913,7 +916,7 @@ remove_pte_table(pte_t *pte_start, unsigned long addr, unsigned long end,
* freed when offlining, or simplely not in use.
*/
if (!direct)
- free_pagetable(pte_page(*pte), 0);
+ free_pagetable(pte_page(*pte), 0, altmap);
spin_lock(&init_mm.page_table_lock);
pte_clear(&init_mm, addr, pte);
@@ -936,7 +939,7 @@ remove_pte_table(pte_t *pte_start, unsigned long addr, unsigned long end,
page_addr = page_address(pte_page(*pte));
if (!memchr_inv(page_addr, PAGE_INUSE, PAGE_SIZE)) {
- free_pagetable(pte_page(*pte), 0);
+ free_pagetable(pte_page(*pte), 0, altmap);
spin_lock(&init_mm.page_table_lock);
pte_clear(&init_mm, addr, pte);
@@ -953,7 +956,7 @@ remove_pte_table(pte_t *pte_start, unsigned long addr, unsigned long end,
static void __meminit
remove_pmd_table(pmd_t *pmd_start, unsigned long addr, unsigned long end,
- bool direct)
+ bool direct, struct vmem_altmap *altmap)
{
unsigned long next, pages = 0;
pte_t *pte_base;
@@ -972,7 +975,8 @@ remove_pmd_table(pmd_t *pmd_start, unsigned long addr, unsigned long end,
IS_ALIGNED(next, PMD_SIZE)) {
if (!direct)
free_pagetable(pmd_page(*pmd),
- get_order(PMD_SIZE));
+ get_order(PMD_SIZE),
+ altmap);
spin_lock(&init_mm.page_table_lock);
pmd_clear(pmd);
@@ -986,7 +990,8 @@ remove_pmd_table(pmd_t *pmd_start, unsigned long addr, unsigned long end,
if (!memchr_inv(page_addr, PAGE_INUSE,
PMD_SIZE)) {
free_pagetable(pmd_page(*pmd),
- get_order(PMD_SIZE));
+ get_order(PMD_SIZE),
+ altmap);
spin_lock(&init_mm.page_table_lock);
pmd_clear(pmd);
@@ -998,8 +1003,8 @@ remove_pmd_table(pmd_t *pmd_start, unsigned long addr, unsigned long end,
}
pte_base = (pte_t *)pmd_page_vaddr(*pmd);
- remove_pte_table(pte_base, addr, next, direct);
- free_pte_table(pte_base, pmd);
+ remove_pte_table(pte_base, addr, next, altmap, direct);
+ free_pte_table(pte_base, pmd, altmap);
}
/* Call free_pmd_table() in remove_pud_table(). */
@@ -1009,7 +1014,7 @@ remove_pmd_table(pmd_t *pmd_start, unsigned long addr, unsigned long end,
static void __meminit
remove_pud_table(pud_t *pud_start, unsigned long addr, unsigned long end,
- bool direct)
+ struct vmem_altmap *altmap, bool direct)
{
unsigned long next, pages = 0;
pmd_t *pmd_base;
@@ -1028,7 +1033,8 @@ remove_pud_table(pud_t *pud_start, unsigned long addr, unsigned long end,
IS_ALIGNED(next, PUD_SIZE)) {
if (!direct)
free_pagetable(pud_page(*pud),
- get_order(PUD_SIZE));
+ get_order(PUD_SIZE),
+ altmap);
spin_lock(&init_mm.page_table_lock);
pud_clear(pud);
@@ -1042,7 +1048,8 @@ remove_pud_table(pud_t *pud_start, unsigned long addr, unsigned long end,
if (!memchr_inv(page_addr, PAGE_INUSE,
PUD_SIZE)) {
free_pagetable(pud_page(*pud),
- get_order(PUD_SIZE));
+ get_order(PUD_SIZE),
+ altmap);
spin_lock(&init_mm.page_table_lock);
pud_clear(pud);
@@ -1054,8 +1061,8 @@ remove_pud_table(pud_t *pud_start, unsigned long addr, unsigned long end,
}
pmd_base = pmd_offset(pud, 0);
- remove_pmd_table(pmd_base, addr, next, direct);
- free_pmd_table(pmd_base, pud);
+ remove_pmd_table(pmd_base, addr, next, direct, altmap);
+ free_pmd_table(pmd_base, pud, altmap);
}
if (direct)
@@ -1064,7 +1071,7 @@ remove_pud_table(pud_t *pud_start, unsigned long addr, unsigned long end,
static void __meminit
remove_p4d_table(p4d_t *p4d_start, unsigned long addr, unsigned long end,
- bool direct)
+ struct vmem_altmap *altmap, bool direct)
{
unsigned long next, pages = 0;
pud_t *pud_base;
@@ -1080,14 +1087,14 @@ remove_p4d_table(p4d_t *p4d_start, unsigned long addr, unsigned long end,
BUILD_BUG_ON(p4d_large(*p4d));
pud_base = pud_offset(p4d, 0);
- remove_pud_table(pud_base, addr, next, direct);
+ remove_pud_table(pud_base, addr, next, altmap, direct);
/*
* For 4-level page tables we do not want to free PUDs, but in the
* 5-level case we should free them. This code will have to change
* to adapt for boot-time switching between 4 and 5 level page tables.
*/
if (CONFIG_PGTABLE_LEVELS == 5)
- free_pud_table(pud_base, p4d);
+ free_pud_table(pud_base, p4d, altmap);
}
if (direct)
@@ -1096,7 +1103,8 @@ remove_p4d_table(p4d_t *p4d_start, unsigned long addr, unsigned long end,
/* start and end are both virtual address. */
static void __meminit
-remove_pagetable(unsigned long start, unsigned long end, bool direct)
+remove_pagetable(unsigned long start, unsigned long end, bool direct,
+ struct vmem_altmap *altmap)
{
unsigned long next;
unsigned long addr;
@@ -1111,15 +1119,16 @@ remove_pagetable(unsigned long start, unsigned long end, bool direct)
continue;
p4d = p4d_offset(pgd, 0);
- remove_p4d_table(p4d, addr, next, direct);
+ remove_p4d_table(p4d, addr, next, altmap, direct);
}
flush_tlb_all();
}
-void __ref vmemmap_free(unsigned long start, unsigned long end)
+void __ref vmemmap_free(unsigned long start, unsigned long end,
+ struct vmem_altmap *altmap)
{
- remove_pagetable(start, end, false);
+ remove_pagetable(start, end, false, altmap);
}
#ifdef CONFIG_MEMORY_HOTREMOVE
@@ -1129,24 +1138,22 @@ kernel_physical_mapping_remove(unsigned long start, unsigned long end)
start = (unsigned long)__va(start);
end = (unsigned long)__va(end);
- remove_pagetable(start, end, true);
+ remove_pagetable(start, end, true, NULL);
}
-int __ref arch_remove_memory(u64 start, u64 size)
+int __ref arch_remove_memory(u64 start, u64 size, struct vmem_altmap *altmap)
{
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
struct page *page = pfn_to_page(start_pfn);
- struct vmem_altmap *altmap;
struct zone *zone;
int ret;
/* With altmap the first mapped page is offset from @start */
- altmap = to_vmem_altmap((unsigned long) page);
if (altmap)
page += vmem_altmap_offset(altmap);
zone = page_zone(page);
- ret = __remove_pages(zone, start_pfn, nr_pages);
+ ret = __remove_pages(zone, start_pfn, nr_pages, altmap);
WARN_ON_ONCE(ret);
kernel_physical_mapping_remove(start, start + size);
@@ -1378,7 +1385,10 @@ static int __meminit vmemmap_populate_hugepages(unsigned long start,
if (pmd_none(*pmd)) {
void *p;
- p = __vmemmap_alloc_block_buf(PMD_SIZE, node, altmap);
+ if (altmap)
+ p = altmap_alloc_block_buf(PMD_SIZE, altmap);
+ else
+ p = vmemmap_alloc_block_buf(PMD_SIZE, node);
if (p) {
pte_t entry;
@@ -1411,9 +1421,9 @@ static int __meminit vmemmap_populate_hugepages(unsigned long start,
return 0;
}
-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)
{
- struct vmem_altmap *altmap = to_vmem_altmap(start);
int err;
if (boot_cpu_has(X86_FEATURE_PSE))