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-rw-r--r--arch/x86/mm/gup.c2
-rw-r--r--arch/x86/mm/hugetlbpage.c1
-rw-r--r--arch/x86/mm/init.c40
-rw-r--r--arch/x86/mm/init_32.c20
-rw-r--r--arch/x86/mm/init_64.c29
-rw-r--r--arch/x86/mm/ioremap.c37
-rw-r--r--arch/x86/mm/kmemcheck/error.c19
-rw-r--r--arch/x86/mm/kmemcheck/kmemcheck.c2
-rw-r--r--arch/x86/mm/kmemcheck/shadow.c16
-rw-r--r--arch/x86/mm/kmemcheck/shadow.h2
-rw-r--r--arch/x86/mm/kmmio.c8
-rw-r--r--arch/x86/mm/mmap.c4
-rw-r--r--arch/x86/mm/mmio-mod.c1
-rw-r--r--arch/x86/mm/numa_32.c3
-rw-r--r--arch/x86/mm/numa_64.c332
-rw-r--r--arch/x86/mm/pageattr.c27
-rw-r--r--arch/x86/mm/pat.c2
-rw-r--r--arch/x86/mm/pgtable.c32
-rw-r--r--arch/x86/mm/pgtable_32.c1
-rw-r--r--arch/x86/mm/srat_64.c4
-rw-r--r--arch/x86/mm/tlb.c8
21 files changed, 313 insertions, 277 deletions
diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
index 71da1bca13c..738e6593799 100644
--- a/arch/x86/mm/gup.c
+++ b/arch/x86/mm/gup.c
@@ -18,7 +18,7 @@ static inline pte_t gup_get_pte(pte_t *ptep)
#else
/*
* With get_user_pages_fast, we walk down the pagetables without taking
- * any locks. For this we would like to load the pointers atoimcally,
+ * any locks. For this we would like to load the pointers atomically,
* but that is not possible (without expensive cmpxchg8b) on PAE. What
* we do have is the guarantee that a pte will only either go from not
* present to present, or present to not present or both -- it will not
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index f46c340727b..069ce7c37c0 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -9,7 +9,6 @@
#include <linux/mm.h>
#include <linux/hugetlb.h>
#include <linux/pagemap.h>
-#include <linux/slab.h>
#include <linux/err.h>
#include <linux/sysctl.h>
#include <asm/mman.h>
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index d406c523901..b278535b14a 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -1,3 +1,4 @@
+#include <linux/gfp.h>
#include <linux/initrd.h>
#include <linux/ioport.h>
#include <linux/swap.h>
@@ -266,16 +267,9 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
if (!after_bootmem)
find_early_table_space(end, use_pse, use_gbpages);
-#ifdef CONFIG_X86_32
- for (i = 0; i < nr_range; i++)
- kernel_physical_mapping_init(mr[i].start, mr[i].end,
- mr[i].page_size_mask);
- ret = end;
-#else /* CONFIG_X86_64 */
for (i = 0; i < nr_range; i++)
ret = kernel_physical_mapping_init(mr[i].start, mr[i].end,
mr[i].page_size_mask);
-#endif
#ifdef CONFIG_X86_32
early_ioremap_page_table_range_init();
@@ -338,11 +332,23 @@ int devmem_is_allowed(unsigned long pagenr)
void free_init_pages(char *what, unsigned long begin, unsigned long end)
{
- unsigned long addr = begin;
+ unsigned long addr;
+ unsigned long begin_aligned, end_aligned;
+
+ /* Make sure boundaries are page aligned */
+ begin_aligned = PAGE_ALIGN(begin);
+ end_aligned = end & PAGE_MASK;
- if (addr >= end)
+ if (WARN_ON(begin_aligned != begin || end_aligned != end)) {
+ begin = begin_aligned;
+ end = end_aligned;
+ }
+
+ if (begin >= end)
return;
+ addr = begin;
+
/*
* If debugging page accesses then do not free this memory but
* mark them not present - any buggy init-section access will
@@ -350,7 +356,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
*/
#ifdef CONFIG_DEBUG_PAGEALLOC
printk(KERN_INFO "debug: unmapping init memory %08lx..%08lx\n",
- begin, PAGE_ALIGN(end));
+ begin, end);
set_memory_np(begin, (end - begin) >> PAGE_SHIFT);
#else
/*
@@ -365,8 +371,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
for (; addr < end; addr += PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
init_page_count(virt_to_page(addr));
- memset((void *)(addr & ~(PAGE_SIZE-1)),
- POISON_FREE_INITMEM, PAGE_SIZE);
+ memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
free_page(addr);
totalram_pages++;
}
@@ -383,6 +388,15 @@ void free_initmem(void)
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
- free_init_pages("initrd memory", start, end);
+ /*
+ * end could be not aligned, and We can not align that,
+ * decompresser could be confused by aligned initrd_end
+ * We already reserve the end partial page before in
+ * - i386_start_kernel()
+ * - x86_64_start_kernel()
+ * - relocate_initrd()
+ * So here We can do PAGE_ALIGN() safely to get partial page to be freed
+ */
+ free_init_pages("initrd memory", start, PAGE_ALIGN(end));
}
#endif
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index c973f8e2a6c..bca79091b9d 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -25,11 +25,11 @@
#include <linux/pfn.h>
#include <linux/poison.h>
#include <linux/bootmem.h>
-#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/memory_hotplug.h>
#include <linux/initrd.h>
#include <linux/cpumask.h>
+#include <linux/gfp.h>
#include <asm/asm.h>
#include <asm/bios_ebda.h>
@@ -241,6 +241,7 @@ kernel_physical_mapping_init(unsigned long start,
unsigned long page_size_mask)
{
int use_pse = page_size_mask == (1<<PG_LEVEL_2M);
+ unsigned long last_map_addr = end;
unsigned long start_pfn, end_pfn;
pgd_t *pgd_base = swapper_pg_dir;
int pgd_idx, pmd_idx, pte_ofs;
@@ -341,9 +342,10 @@ repeat:
prot = PAGE_KERNEL_EXEC;
pages_4k++;
- if (mapping_iter == 1)
+ if (mapping_iter == 1) {
set_pte(pte, pfn_pte(pfn, init_prot));
- else
+ last_map_addr = (pfn << PAGE_SHIFT) + PAGE_SIZE;
+ } else
set_pte(pte, pfn_pte(pfn, prot));
}
}
@@ -368,7 +370,7 @@ repeat:
mapping_iter = 2;
goto repeat;
}
- return 0;
+ return last_map_addr;
}
pte_t *kmap_pte;
@@ -748,6 +750,7 @@ static void __init zone_sizes_init(void)
free_area_init_nodes(max_zone_pfns);
}
+#ifndef CONFIG_NO_BOOTMEM
static unsigned long __init setup_node_bootmem(int nodeid,
unsigned long start_pfn,
unsigned long end_pfn,
@@ -764,13 +767,14 @@ static unsigned long __init setup_node_bootmem(int nodeid,
printk(KERN_INFO " node %d bootmap %08lx - %08lx\n",
nodeid, bootmap, bootmap + bootmap_size);
free_bootmem_with_active_regions(nodeid, end_pfn);
- early_res_to_bootmem(start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT);
return bootmap + bootmap_size;
}
+#endif
void __init setup_bootmem_allocator(void)
{
+#ifndef CONFIG_NO_BOOTMEM
int nodeid;
unsigned long bootmap_size, bootmap;
/*
@@ -782,11 +786,13 @@ void __init setup_bootmem_allocator(void)
if (bootmap == -1L)
panic("Cannot find bootmem map of size %ld\n", bootmap_size);
reserve_early(bootmap, bootmap + bootmap_size, "BOOTMAP");
+#endif
printk(KERN_INFO " mapped low ram: 0 - %08lx\n",
max_pfn_mapped<<PAGE_SHIFT);
printk(KERN_INFO " low ram: 0 - %08lx\n", max_low_pfn<<PAGE_SHIFT);
+#ifndef CONFIG_NO_BOOTMEM
for_each_online_node(nodeid) {
unsigned long start_pfn, end_pfn;
@@ -804,6 +810,7 @@ void __init setup_bootmem_allocator(void)
bootmap = setup_node_bootmem(nodeid, start_pfn, end_pfn,
bootmap);
}
+#endif
after_bootmem = 1;
}
@@ -892,8 +899,7 @@ void __init mem_init(void)
reservedpages << (PAGE_SHIFT-10),
datasize >> 10,
initsize >> 10,
- (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))
- );
+ totalhigh_pages << (PAGE_SHIFT-10));
printk(KERN_INFO "virtual kernel memory layout:\n"
" fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 5198b9bb34e..ee41bba315d 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -29,6 +29,7 @@
#include <linux/module.h>
#include <linux/memory_hotplug.h>
#include <linux/nmi.h>
+#include <linux/gfp.h>
#include <asm/processor.h>
#include <asm/bios_ebda.h>
@@ -49,6 +50,7 @@
#include <asm/numa.h>
#include <asm/cacheflush.h>
#include <asm/init.h>
+#include <linux/bootmem.h>
static unsigned long dma_reserve __initdata;
@@ -571,6 +573,7 @@ kernel_physical_mapping_init(unsigned long start,
void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn,
int acpi, int k8)
{
+#ifndef CONFIG_NO_BOOTMEM
unsigned long bootmap_size, bootmap;
bootmap_size = bootmem_bootmap_pages(end_pfn)<<PAGE_SHIFT;
@@ -578,13 +581,15 @@ void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn,
PAGE_SIZE);
if (bootmap == -1L)
panic("Cannot find bootmem map of size %ld\n", bootmap_size);
+ reserve_early(bootmap, bootmap + bootmap_size, "BOOTMAP");
/* don't touch min_low_pfn */
bootmap_size = init_bootmem_node(NODE_DATA(0), bootmap >> PAGE_SHIFT,
0, end_pfn);
e820_register_active_regions(0, start_pfn, end_pfn);
free_bootmem_with_active_regions(0, end_pfn);
- early_res_to_bootmem(0, end_pfn<<PAGE_SHIFT);
- reserve_bootmem(bootmap, bootmap_size, BOOTMEM_DEFAULT);
+#else
+ e820_register_active_regions(0, start_pfn, end_pfn);
+#endif
}
#endif
@@ -616,6 +621,21 @@ void __init paging_init(void)
*/
#ifdef CONFIG_MEMORY_HOTPLUG
/*
+ * After memory hotplug the variables max_pfn, max_low_pfn and high_memory need
+ * updating.
+ */
+static void update_end_of_memory_vars(u64 start, u64 size)
+{
+ unsigned long end_pfn = PFN_UP(start + size);
+
+ if (end_pfn > max_pfn) {
+ max_pfn = end_pfn;
+ max_low_pfn = end_pfn;
+ high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;
+ }
+}
+
+/*
* Memory is added always to NORMAL zone. This means you will never get
* additional DMA/DMA32 memory.
*/
@@ -634,6 +654,9 @@ int arch_add_memory(int nid, u64 start, u64 size)
ret = __add_pages(nid, zone, start_pfn, nr_pages);
WARN_ON_ONCE(ret);
+ /* update max_pfn, max_low_pfn and high_memory */
+ update_end_of_memory_vars(start, size);
+
return ret;
}
EXPORT_SYMBOL_GPL(arch_add_memory);
@@ -955,7 +978,7 @@ vmemmap_populate(struct page *start_page, unsigned long size, int node)
if (pmd_none(*pmd)) {
pte_t entry;
- p = vmemmap_alloc_block(PMD_SIZE, node);
+ p = vmemmap_alloc_block_buf(PMD_SIZE, node);
if (!p)
return -ENOMEM;
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 03c75ffd5c2..5eb1ba74a3a 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -24,43 +24,6 @@
#include "physaddr.h"
-int page_is_ram(unsigned long pagenr)
-{
- resource_size_t addr, end;
- int i;
-
- /*
- * A special case is the first 4Kb of memory;
- * This is a BIOS owned area, not kernel ram, but generally
- * not listed as such in the E820 table.
- */
- if (pagenr == 0)
- return 0;
-
- /*
- * Second special case: Some BIOSen report the PC BIOS
- * area (640->1Mb) as ram even though it is not.
- */
- if (pagenr >= (BIOS_BEGIN >> PAGE_SHIFT) &&
- pagenr < (BIOS_END >> PAGE_SHIFT))
- return 0;
-
- for (i = 0; i < e820.nr_map; i++) {
- /*
- * Not usable memory:
- */
- if (e820.map[i].type != E820_RAM)
- continue;
- addr = (e820.map[i].addr + PAGE_SIZE-1) >> PAGE_SHIFT;
- end = (e820.map[i].addr + e820.map[i].size) >> PAGE_SHIFT;
-
-
- if ((pagenr >= addr) && (pagenr < end))
- return 1;
- }
- return 0;
-}
-
/*
* Fix up the linear direct mapping of the kernel to avoid cache attribute
* conflicts.
diff --git a/arch/x86/mm/kmemcheck/error.c b/arch/x86/mm/kmemcheck/error.c
index 4901d0dafda..af3b6c8a436 100644
--- a/arch/x86/mm/kmemcheck/error.c
+++ b/arch/x86/mm/kmemcheck/error.c
@@ -106,26 +106,25 @@ void kmemcheck_error_recall(void)
switch (e->type) {
case KMEMCHECK_ERROR_INVALID_ACCESS:
- printk(KERN_ERR "WARNING: kmemcheck: Caught %d-bit read "
- "from %s memory (%p)\n",
+ printk(KERN_WARNING "WARNING: kmemcheck: Caught %d-bit read from %s memory (%p)\n",
8 * e->size, e->state < ARRAY_SIZE(desc) ?
desc[e->state] : "(invalid shadow state)",
(void *) e->address);
- printk(KERN_INFO);
+ printk(KERN_WARNING);
for (i = 0; i < SHADOW_COPY_SIZE; ++i)
- printk("%02x", e->memory_copy[i]);
- printk("\n");
+ printk(KERN_CONT "%02x", e->memory_copy[i]);
+ printk(KERN_CONT "\n");
- printk(KERN_INFO);
+ printk(KERN_WARNING);
for (i = 0; i < SHADOW_COPY_SIZE; ++i) {
if (e->shadow_copy[i] < ARRAY_SIZE(short_desc))
- printk(" %c", short_desc[e->shadow_copy[i]]);
+ printk(KERN_CONT " %c", short_desc[e->shadow_copy[i]]);
else
- printk(" ?");
+ printk(KERN_CONT " ?");
}
- printk("\n");
- printk(KERN_INFO "%*c\n", 2 + 2
+ printk(KERN_CONT "\n");
+ printk(KERN_WARNING "%*c\n", 2 + 2
* (int) (e->address & (SHADOW_COPY_SIZE - 1)), '^');
break;
case KMEMCHECK_ERROR_BUG:
diff --git a/arch/x86/mm/kmemcheck/kmemcheck.c b/arch/x86/mm/kmemcheck/kmemcheck.c
index 8cc18334414..b3b531a4f8e 100644
--- a/arch/x86/mm/kmemcheck/kmemcheck.c
+++ b/arch/x86/mm/kmemcheck/kmemcheck.c
@@ -337,7 +337,7 @@ bool kmemcheck_is_obj_initialized(unsigned long addr, size_t size)
if (!shadow)
return true;
- status = kmemcheck_shadow_test(shadow, size);
+ status = kmemcheck_shadow_test_all(shadow, size);
return status == KMEMCHECK_SHADOW_INITIALIZED;
}
diff --git a/arch/x86/mm/kmemcheck/shadow.c b/arch/x86/mm/kmemcheck/shadow.c
index 3f66b82076a..aec124214d9 100644
--- a/arch/x86/mm/kmemcheck/shadow.c
+++ b/arch/x86/mm/kmemcheck/shadow.c
@@ -125,12 +125,12 @@ void kmemcheck_mark_initialized_pages(struct page *p, unsigned int n)
enum kmemcheck_shadow kmemcheck_shadow_test(void *shadow, unsigned int size)
{
+#ifdef CONFIG_KMEMCHECK_PARTIAL_OK
uint8_t *x;
unsigned int i;
x = shadow;
-#ifdef CONFIG_KMEMCHECK_PARTIAL_OK
/*
* Make sure _some_ bytes are initialized. Gcc frequently generates
* code to access neighboring bytes.
@@ -139,13 +139,25 @@ enum kmemcheck_shadow kmemcheck_shadow_test(void *shadow, unsigned int size)
if (x[i] == KMEMCHECK_SHADOW_INITIALIZED)
return x[i];
}
+
+ return x[0];
#else
+ return kmemcheck_shadow_test_all(shadow, size);
+#endif
+}
+
+enum kmemcheck_shadow kmemcheck_shadow_test_all(void *shadow, unsigned int size)
+{
+ uint8_t *x;
+ unsigned int i;
+
+ x = shadow;
+
/* All bytes must be initialized. */
for (i = 0; i < size; ++i) {
if (x[i] != KMEMCHECK_SHADOW_INITIALIZED)
return x[i];
}
-#endif
return x[0];
}
diff --git a/arch/x86/mm/kmemcheck/shadow.h b/arch/x86/mm/kmemcheck/shadow.h
index af46d9ab9d8..ff0b2f70fbc 100644
--- a/arch/x86/mm/kmemcheck/shadow.h
+++ b/arch/x86/mm/kmemcheck/shadow.h
@@ -11,6 +11,8 @@ enum kmemcheck_shadow {
void *kmemcheck_shadow_lookup(unsigned long address);
enum kmemcheck_shadow kmemcheck_shadow_test(void *shadow, unsigned int size);
+enum kmemcheck_shadow kmemcheck_shadow_test_all(void *shadow,
+ unsigned int size);
void kmemcheck_shadow_set(void *shadow, unsigned int size);
#endif
diff --git a/arch/x86/mm/kmmio.c b/arch/x86/mm/kmmio.c
index c0f6198565e..5d0e67fff1a 100644
--- a/arch/x86/mm/kmmio.c
+++ b/arch/x86/mm/kmmio.c
@@ -21,6 +21,7 @@
#include <linux/kdebug.h>
#include <linux/mutex.h>
#include <linux/io.h>
+#include <linux/slab.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
#include <linux/errno.h>
@@ -538,14 +539,15 @@ static int
kmmio_die_notifier(struct notifier_block *nb, unsigned long val, void *args)
{
struct die_args *arg = args;
+ unsigned long* dr6_p = (unsigned long *)ERR_PTR(arg->err);
- if (val == DIE_DEBUG && (arg->err & DR_STEP))
- if (post_kmmio_handler(arg->err, arg->regs) == 1) {
+ if (val == DIE_DEBUG && (*dr6_p & DR_STEP))
+ if (post_kmmio_handler(*dr6_p, arg->regs) == 1) {
/*
* Reset the BS bit in dr6 (pointed by args->err) to
* denote completion of processing
*/
- (*(unsigned long *)ERR_PTR(arg->err)) &= ~DR_STEP;
+ *dr6_p &= ~DR_STEP;
return NOTIFY_STOP;
}
diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c
index c8191defc38..1dab5194fd9 100644
--- a/arch/x86/mm/mmap.c
+++ b/arch/x86/mm/mmap.c
@@ -71,7 +71,7 @@ static int mmap_is_legacy(void)
if (current->personality & ADDR_COMPAT_LAYOUT)
return 1;
- if (current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY)
+ if (rlimit(RLIMIT_STACK) == RLIM_INFINITY)
return 1;
return sysctl_legacy_va_layout;
@@ -96,7 +96,7 @@ static unsigned long mmap_rnd(void)
static unsigned long mmap_base(void)
{
- unsigned long gap = current->signal->rlim[RLIMIT_STACK].rlim_cur;
+ unsigned long gap = rlimit(RLIMIT_STACK);
if (gap < MIN_GAP)
gap = MIN_GAP;
diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c
index 34a3291ca10..3adff7dcc14 100644
--- a/arch/x86/mm/mmio-mod.c
+++ b/arch/x86/mm/mmio-mod.c
@@ -26,6 +26,7 @@
#include <linux/module.h>
#include <linux/debugfs.h>
+#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/version.h>
diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index b20760ca724..809baaaf48b 100644
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -418,7 +418,10 @@ void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn,
for_each_online_node(nid) {
memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
+ NODE_DATA(nid)->node_id = nid;
+#ifndef CONFIG_NO_BOOTMEM
NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
+#endif
}
setup_bootmem_allocator();
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index 83bbc70d11b..8948f47fde0 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -163,30 +163,48 @@ static void * __init early_node_mem(int nodeid, unsigned long start,
unsigned long end, unsigned long size,
unsigned long align)
{
- unsigned long mem = find_e820_area(start, end, size, align);
- void *ptr;
+ unsigned long mem;
+ /*
+ * put it on high as possible
+ * something will go with NODE_DATA
+ */
+ if (start < (MAX_DMA_PFN<<PAGE_SHIFT))
+ start = MAX_DMA_PFN<<PAGE_SHIFT;
+ if (start < (MAX_DMA32_PFN<<PAGE_SHIFT) &&
+ end > (MAX_DMA32_PFN<<PAGE_SHIFT))
+ start = MAX_DMA32_PFN<<PAGE_SHIFT;
+ mem = find_e820_area(start, end, size, align);
+ if (mem != -1L)
+ return __va(mem);
+
+ /* extend the search scope */
+ end = max_pfn_mapped << PAGE_SHIFT;
+ if (end > (MAX_DMA32_PFN<<PAGE_SHIFT))
+ start = MAX_DMA32_PFN<<PAGE_SHIFT;
+ else
+ start = MAX_DMA_PFN<<PAGE_SHIFT;
+ mem = find_e820_area(start, end, size, align);
if (mem != -1L)
return __va(mem);
- ptr = __alloc_bootmem_nopanic(size, align, __pa(MAX_DMA_ADDRESS));
- if (ptr == NULL) {
- printk(KERN_ERR "Cannot find %lu bytes in node %d\n",
+ printk(KERN_ERR "Cannot find %lu bytes in node %d\n",
size, nodeid);
- return NULL;
- }
- return ptr;
+
+ return NULL;
}
/* Initialize bootmem allocator for a node */
void __init
setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
{
- unsigned long start_pfn, last_pfn, bootmap_pages, bootmap_size;
+ unsigned long start_pfn, last_pfn, nodedata_phys;
const int pgdat_size = roundup(sizeof(pg_data_t), PAGE_SIZE);
- unsigned long bootmap_start, nodedata_phys;
- void *bootmap;
int nid;
+#ifndef CONFIG_NO_BOOTMEM
+ unsigned long bootmap_start, bootmap_pages, bootmap_size;
+ void *bootmap;
+#endif
if (!end)
return;
@@ -200,7 +218,7 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
start = roundup(start, ZONE_ALIGN);
- printk(KERN_INFO "Bootmem setup node %d %016lx-%016lx\n", nodeid,
+ printk(KERN_INFO "Initmem setup node %d %016lx-%016lx\n", nodeid,
start, end);
start_pfn = start >> PAGE_SHIFT;
@@ -211,14 +229,21 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
if (node_data[nodeid] == NULL)
return;
nodedata_phys = __pa(node_data[nodeid]);
+ reserve_early(nodedata_phys, nodedata_phys + pgdat_size, "NODE_DATA");
printk(KERN_INFO " NODE_DATA [%016lx - %016lx]\n", nodedata_phys,
nodedata_phys + pgdat_size - 1);
+ nid = phys_to_nid(nodedata_phys);
+ if (nid != nodeid)
+ printk(KERN_INFO " NODE_DATA(%d) on node %d\n", nodeid, nid);
memset(NODE_DATA(nodeid), 0, sizeof(pg_data_t));
- NODE_DATA(nodeid)->bdata = &bootmem_node_data[nodeid];
+ NODE_DATA(nodeid)->node_id = nodeid;
NODE_DATA(nodeid)->node_start_pfn = start_pfn;
NODE_DATA(nodeid)->node_spanned_pages = last_pfn - start_pfn;
+#ifndef CONFIG_NO_BOOTMEM
+ NODE_DATA(nodeid)->bdata = &bootmem_node_data[nodeid];
+
/*
* Find a place for the bootmem map
* nodedata_phys could be on other nodes by alloc_bootmem,
@@ -227,11 +252,7 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
* of alloc_bootmem, that could clash with reserved range
*/
bootmap_pages = bootmem_bootmap_pages(last_pfn - start_pfn);
- nid = phys_to_nid(nodedata_phys);
- if (nid == nodeid)
- bootmap_start = roundup(nodedata_phys + pgdat_size, PAGE_SIZE);
- else
- bootmap_start = roundup(start, PAGE_SIZE);
+ bootmap_start = roundup(nodedata_phys + pgdat_size, PAGE_SIZE);
/*
* SMP_CACHE_BYTES could be enough, but init_bootmem_node like
* to use that to align to PAGE_SIZE
@@ -239,18 +260,13 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
bootmap = early_node_mem(nodeid, bootmap_start, end,
bootmap_pages<<PAGE_SHIFT, PAGE_SIZE);
if (bootmap == NULL) {
- if (nodedata_phys < start || nodedata_phys >= end) {
- /*
- * only need to free it if it is from other node
- * bootmem
- */
- if (nid != nodeid)
- free_bootmem(nodedata_phys, pgdat_size);
- }
+ free_early(nodedata_phys, nodedata_phys + pgdat_size);
node_data[nodeid] = NULL;
return;
}
bootmap_start = __pa(bootmap);
+ reserve_early(bootmap_start, bootmap_start+(bootmap_pages<<PAGE_SHIFT),
+ "BOOTMAP");
bootmap_size = init_bootmem_node(NODE_DATA(nodeid),
bootmap_start >> PAGE_SHIFT,
@@ -259,31 +275,12 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
printk(KERN_INFO " bootmap [%016lx - %016lx] pages %lx\n",
bootmap_start, bootmap_start + bootmap_size - 1,
bootmap_pages);
-
- free_bootmem_with_active_regions(nodeid, end);
-
- /*
- * convert early reserve to bootmem reserve earlier
- * otherwise early_node_mem could use early reserved mem
- * on previous node
- */
- early_res_to_bootmem(start, end);
-
- /*
- * in some case early_node_mem could use alloc_bootmem
- * to get range on other node, don't reserve that again
- */
- if (nid != nodeid)
- printk(KERN_INFO " NODE_DATA(%d) on node %d\n", nodeid, nid);
- else
- reserve_bootmem_node(NODE_DATA(nodeid), nodedata_phys,
- pgdat_size, BOOTMEM_DEFAULT);
nid = phys_to_nid(bootmap_start);
if (nid != nodeid)
printk(KERN_INFO " bootmap(%d) on node %d\n", nodeid, nid);
- else
- reserve_bootmem_node(NODE_DATA(nodeid), bootmap_start,
- bootmap_pages<<PAGE_SHIFT, BOOTMEM_DEFAULT);
+
+ free_bootmem_with_active_regions(nodeid, end);
+#endif
node_set_online(nodeid);
}
@@ -427,7 +424,7 @@ static int __init split_nodes_interleave(u64 addr, u64 max_addr,
* Calculate the number of big nodes that can be allocated as a result
* of consolidating the remainder.
*/
- big = ((size & ~FAKE_NODE_MIN_HASH_MASK) & nr_nodes) /
+ big = ((size & ~FAKE_NODE_MIN_HASH_MASK) * nr_nodes) /
FAKE_NODE_MIN_SIZE;
size &= FAKE_NODE_MIN_HASH_MASK;
@@ -502,77 +499,99 @@ static int __init split_nodes_interleave(u64 addr, u64 max_addr,
}
/*
- * Splits num_nodes nodes up equally starting at node_start. The return value
- * is the number of nodes split up and addr is adjusted to be at the end of the
- * last node allocated.
+ * Returns the end address of a node so that there is at least `size' amount of
+ * non-reserved memory or `max_addr' is reached.
*/
-static int __init split_nodes_equally(u64 *addr, u64 max_addr, int node_start,
- int num_nodes)
+static u64 __init find_end_of_node(u64 start, u64 max_addr, u64 size)
{
- unsigned int big;
- u64 size;
- int i;
+ u64 end = start + size;
- if (num_nodes <= 0)
- return -1;
- if (num_nodes > MAX_NUMNODES)
- num_nodes = MAX_NUMNODES;
- size = (max_addr - *addr - e820_hole_size(*addr, max_addr)) /
- num_nodes;
- /*
- * Calculate the number of big nodes that can be allocated as a result
- * of consolidating the leftovers.
- */
- big = ((size & ~FAKE_NODE_MIN_HASH_MASK) * num_nodes) /
- FAKE_NODE_MIN_SIZE;
-
- /* Round down to nearest FAKE_NODE_MIN_SIZE. */
- size &= FAKE_NODE_MIN_HASH_MASK;
- if (!size) {
- printk(KERN_ERR "Not enough memory for each node. "
- "NUMA emulation disabled.\n");
- return -1;
- }
-
- for (i = node_start; i < num_nodes + node_start; i++) {
- u64 end = *addr + size;
-
- if (i < big)
- end += FAKE_NODE_MIN_SIZE;
- /*
- * The final node can have the remaining system RAM. Other
- * nodes receive roughly the same amount of available pages.
- */
- if (i == num_nodes + node_start - 1)
+ while (end - start - e820_hole_size(start, end) < size) {
+ end += FAKE_NODE_MIN_SIZE;
+ if (end > max_addr) {
end = max_addr;
- else
- while (end - *addr - e820_hole_size(*addr, end) <
- size) {
- end += FAKE_NODE_MIN_SIZE;
- if (end > max_addr) {
- end = max_addr;
- break;
- }
- }
- if (setup_node_range(i, addr, end - *addr, max_addr) < 0)
break;
+ }
}
- return i - node_start + 1;
+ return end;
}
/*
- * Splits the remaining system RAM into chunks of size. The remaining memory is
- * always assigned to a final node and can be asymmetric. Returns the number of
- * nodes split.
+ * Sets up fake nodes of `size' interleaved over physical nodes ranging from
+ * `addr' to `max_addr'. The return value is the number of nodes allocated.
*/
-static int __init split_nodes_by_size(u64 *addr, u64 max_addr, int node_start,
- u64 size)
+static int __init split_nodes_size_interleave(u64 addr, u64 max_addr, u64 size)
{
- int i = node_start;
- size = (size << 20) & FAKE_NODE_MIN_HASH_MASK;
- while (!setup_node_range(i++, addr, size, max_addr))
- ;
- return i - node_start;
+ nodemask_t physnode_mask = NODE_MASK_NONE;
+ u64 min_size;
+ int ret = 0;
+ int i;
+
+ if (!size)
+ return -1;
+ /*
+ * The limit on emulated nodes is MAX_NUMNODES, so the size per node is
+ * increased accordingly if the requested size is too small. This
+ * creates a uniform distribution of node sizes across the entire
+ * machine (but not necessarily over physical nodes).
+ */
+ min_size = (max_addr - addr - e820_hole_size(addr, max_addr)) /
+ MAX_NUMNODES;
+ min_size = max(min_size, FAKE_NODE_MIN_SIZE);
+ if ((min_size & FAKE_NODE_MIN_HASH_MASK) < min_size)
+ min_size = (min_size + FAKE_NODE_MIN_SIZE) &
+ FAKE_NODE_MIN_HASH_MASK;
+ if (size < min_size) {
+ pr_err("Fake node size %LuMB too small, increasing to %LuMB\n",
+ size >> 20, min_size >> 20);
+ size = min_size;
+ }
+ size &= FAKE_NODE_MIN_HASH_MASK;
+
+ for (i = 0; i < MAX_NUMNODES; i++)
+ if (physnodes[i].start != physnodes[i].end)
+ node_set(i, physnode_mask);
+ /*
+ * Fill physical nodes with fake nodes of size until there is no memory
+ * left on any of them.
+ */
+ while (nodes_weight(physnode_mask)) {
+ for_each_node_mask(i, physnode_mask) {
+ u64 dma32_end = MAX_DMA32_PFN << PAGE_SHIFT;
+ u64 end;
+
+ end = find_end_of_node(physnodes[i].start,
+ physnodes[i].end, size);
+ /*
+ * If there won't be at least FAKE_NODE_MIN_SIZE of
+ * non-reserved memory in ZONE_DMA32 for the next node,
+ * this one must extend to the boundary.
+ */
+ if (end < dma32_end && dma32_end - end -
+ e820_hole_size(end, dma32_end) < FAKE_NODE_MIN_SIZE)
+ end = dma32_end;
+
+ /*
+ * If there won't be enough non-reserved memory for the
+ * next node, this one must extend to the end of the
+ * physical node.
+ */
+ if (physnodes[i].end - end -
+ e820_hole_size(end, physnodes[i].end) < size)
+ end = physnodes[i].end;
+
+ /*
+ * Setup the fake node that will be allocated as bootmem
+ * later. If setup_node_range() returns non-zero, there
+ * is no more memory available on this physical node.
+ */
+ if (setup_node_range(ret++, &physnodes[i].start,
+ end - physnodes[i].start,
+ physnodes[i].end) < 0)
+ node_clear(i, physnode_mask);
+ }
+ }
+ return ret;
}
/*
@@ -582,87 +601,32 @@ static int __init split_nodes_by_size(u64 *addr, u64 max_addr, int node_start,
static int __init numa_emulation(unsigned long start_pfn,
unsigned long last_pfn, int acpi, int k8)
{
- u64 size, addr = start_pfn << PAGE_SHIFT;
+ u64 addr = start_pfn << PAGE_SHIFT;
u64 max_addr = last_pfn << PAGE_SHIFT;
- int num_nodes = 0, num = 0, coeff_flag, coeff = -1, i;
int num_phys_nodes;
+ int num_nodes;
+ int i;
num_phys_nodes = setup_physnodes(addr, max_addr, acpi, k8);
/*
- * If the numa=fake command-line is just a single number N, split the
- * system RAM into N fake nodes.
+ * If the numa=fake command-line contains a 'M' or 'G', it represents
+ * the fixed node size. Otherwise, if it is just a single number N,
+ * split the system RAM into N fake nodes.
*/
- if (!strchr(cmdline, '*') && !strchr(cmdline, ',')) {
- long n = simple_strtol(cmdline, NULL, 0);
-
- num_nodes = split_nodes_interleave(addr, max_addr,
- num_phys_nodes, n);
- if (num_nodes < 0)
- return num_nodes;
- goto out;
- }
+ if (strchr(cmdline, 'M') || strchr(cmdline, 'G')) {
+ u64 size;
- /* Parse the command line. */
- for (coeff_flag = 0; ; cmdline++) {
- if (*cmdline && isdigit(*cmdline)) {
- num = num * 10 + *cmdline - '0';
- continue;
- }
- if (*cmdline == '*') {
- if (num > 0)
- coeff = num;
- coeff_flag = 1;
- }
- if (!*cmdline || *cmdline == ',') {
- if (!coeff_flag)
- coeff = 1;
- /*
- * Round down to the nearest FAKE_NODE_MIN_SIZE.
- * Command-line coefficients are in megabytes.
- */
- size = ((u64)num << 20) & FAKE_NODE_MIN_HASH_MASK;
- if (size)
- for (i = 0; i < coeff; i++, num_nodes++)
- if (setup_node_range(num_nodes, &addr,
- size, max_addr) < 0)
- goto done;
- if (!*cmdline)
- break;
- coeff_flag = 0;
- coeff = -1;
- }
- num = 0;
- }
-done:
- if (!num_nodes)
- return -1;
- /* Fill remainder of system RAM, if appropriate. */
- if (addr < max_addr) {
- if (coeff_flag && coeff < 0) {
- /* Split remaining nodes into num-sized chunks */
- num_nodes += split_nodes_by_size(&addr, max_addr,
- num_nodes, num);
- goto out;
- }
- switch (*(cmdline - 1)) {
- case '*':
- /* Split remaining nodes into coeff chunks */
- if (coeff <= 0)
- break;
- num_nodes += split_nodes_equally(&addr, max_addr,
- num_nodes, coeff);
- break;
- case ',':
- /* Do not allocate remaining system RAM */
- break;
- default:
- /* Give one final node */
- setup_node_range(num_nodes, &addr, max_addr - addr,
- max_addr);
- num_nodes++;
- }
+ size = memparse(cmdline, &cmdline);
+ num_nodes = split_nodes_size_interleave(addr, max_addr, size);
+ } else {
+ unsigned long n;
+
+ n = simple_strtoul(cmdline, NULL, 0);
+ num_nodes = split_nodes_interleave(addr, max_addr, num_phys_nodes, n);
}
-out:
+
+ if (num_nodes < 0)
+ return num_nodes;
memnode_shift = compute_hash_shift(nodes, num_nodes, NULL);
if (memnode_shift < 0) {
memnode_shift = 0;
@@ -742,6 +706,10 @@ unsigned long __init numa_free_all_bootmem(void)
for_each_online_node(i)
pages += free_all_bootmem_node(NODE_DATA(i));
+#ifdef CONFIG_NO_BOOTMEM
+ pages += free_all_memory_core_early(MAX_NUMNODES);
+#endif
+
return pages;
}
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 1d4eb93d333..28195c350b9 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -6,13 +6,13 @@
#include <linux/bootmem.h>
#include <linux/module.h>
#include <linux/sched.h>
-#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/seq_file.h>
#include <linux/debugfs.h>
#include <linux/pfn.h>
#include <linux/percpu.h>
+#include <linux/gfp.h>
#include <asm/e820.h>
#include <asm/processor.h>
@@ -291,8 +291,29 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address,
*/
if (kernel_set_to_readonly &&
within(address, (unsigned long)_text,
- (unsigned long)__end_rodata_hpage_align))
- pgprot_val(forbidden) |= _PAGE_RW;
+ (unsigned long)__end_rodata_hpage_align)) {
+ unsigned int level;
+
+ /*
+ * Don't enforce the !RW mapping for the kernel text mapping,
+ * if the current mapping is already using small page mapping.
+ * No need to work hard to preserve large page mappings in this
+ * case.
+ *
+ * This also fixes the Linux Xen paravirt guest boot failure
+ * (because of unexpected read-only mappings for kernel identity
+ * mappings). In this paravirt guest case, the kernel text
+ * mapping and the kernel identity mapping share the same
+ * page-table pages. Thus we can't really use different
+ * protections for the kernel text and identity mappings. Also,
+ * these shared mappings are made of small page mappings.
+ * Thus this don't enforce !RW mapping for small page kernel
+ * text mapping logic will help Linux Xen parvirt guest boot
+ * aswell.
+ */
+ if (lookup_address(address, &level) && (level != PG_LEVEL_4K))
+ pgprot_val(forbidden) |= _PAGE_RW;
+ }
#endif
prot = __pgprot(pgprot_val(prot) & ~pgprot_val(forbidden));
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index ae9648eb1c7..edc8b95afc1 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -12,7 +12,7 @@
#include <linux/debugfs.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/gfp.h>
+#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/rbtree.h>
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index ed34f5e3599..5c4ee422590 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -1,4 +1,5 @@
#include <linux/mm.h>
+#include <linux/gfp.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
#include <asm/tlb.h>
@@ -6,6 +7,14 @@
#define PGALLOC_GFP GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO
+#ifdef CONFIG_HIGHPTE
+#define PGALLOC_USER_GFP __GFP_HIGHMEM
+#else
+#define PGALLOC_USER_GFP 0
+#endif
+
+gfp_t __userpte_alloc_gfp = PGALLOC_GFP | PGALLOC_USER_GFP;
+
pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
{
return (pte_t *)__get_free_page(PGALLOC_GFP);
@@ -15,16 +24,29 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
{
struct page *pte;
-#ifdef CONFIG_HIGHPTE
- pte = alloc_pages(PGALLOC_GFP | __GFP_HIGHMEM, 0);
-#else
- pte = alloc_pages(PGALLOC_GFP, 0);
-#endif
+ pte = alloc_pages(__userpte_alloc_gfp, 0);
if (pte)
pgtable_page_ctor(pte);
return pte;
}
+static int __init setup_userpte(char *arg)
+{
+ if (!arg)
+ return -EINVAL;
+
+ /*
+ * "userpte=nohigh" disables allocation of user pagetables in
+ * high memory.
+ */
+ if (strcmp(arg, "nohigh") == 0)
+ __userpte_alloc_gfp &= ~__GFP_HIGHMEM;
+ else
+ return -EINVAL;
+ return 0;
+}
+early_param("userpte", setup_userpte);
+
void ___pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
{
pgtable_page_dtor(pte);
diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
index 46c8834aedc..1a8faf09afe 100644
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -6,7 +6,6 @@
#include <linux/swap.h>
#include <linux/smp.h>
#include <linux/highmem.h>
-#include <linux/slab.h>
#include <linux/pagemap.h>
#include <linux/spinlock.h>
#include <linux/module.h>
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index a27124185fc..28c68762648 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -229,9 +229,11 @@ update_nodes_add(int node, unsigned long start, unsigned long end)
printk(KERN_ERR "SRAT: Hotplug zone not continuous. Partly ignored\n");
}
- if (changed)
+ if (changed) {
+ node_set(node, cpu_nodes_parsed);
printk(KERN_INFO "SRAT: hot plug zone found %Lx - %Lx\n",
nd->start, nd->end);
+ }
}
/* Callback for parsing of the Proximity Domain <-> Memory Area mappings */
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 65b58e4b0b8..426f3a1a64d 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -41,7 +41,7 @@ union smp_flush_state {
struct {
struct mm_struct *flush_mm;
unsigned long flush_va;
- spinlock_t tlbstate_lock;
+ raw_spinlock_t tlbstate_lock;
DECLARE_BITMAP(flush_cpumask, NR_CPUS);
};
char pad[INTERNODE_CACHE_BYTES];
@@ -181,7 +181,7 @@ static void flush_tlb_others_ipi(const struct cpumask *cpumask,
* num_online_cpus() <= NUM_INVALIDATE_TLB_VECTORS, but it is
* probably not worth checking this for a cache-hot lock.
*/
- spin_lock(&f->tlbstate_lock);
+ raw_spin_lock(&f->tlbstate_lock);
f->flush_mm = mm;
f->flush_va = va;
@@ -199,7 +199,7 @@ static void flush_tlb_others_ipi(const struct cpumask *cpumask,
f->flush_mm = NULL;
f->flush_va = 0;
- spin_unlock(&f->tlbstate_lock);
+ raw_spin_unlock(&f->tlbstate_lock);
}
void native_flush_tlb_others(const struct cpumask *cpumask,
@@ -223,7 +223,7 @@ static int __cpuinit init_smp_flush(void)
int i;
for (i = 0; i < ARRAY_SIZE(flush_state); i++)
- spin_lock_init(&flush_state[i].tlbstate_lock);
+ raw_spin_lock_init(&flush_state[i].tlbstate_lock);
return 0;
}