#include <linux/highmem.h>
#include <linux/smp.h>
#include <linux/timex.h>
+#include <linux/hugetlb.h>
#include <asm/setup.h>
#include <asm/sections.h>
#include <asm/cacheflush.h>
struct pglist_data node_data[MAX_NUMNODES] __read_mostly;
EXPORT_SYMBOL(node_data);
-/* We only create bootmem data on node 0. */
-static bootmem_data_t __initdata node0_bdata;
-
/* Information on the NUMA nodes that we compute early */
unsigned long __cpuinitdata node_start_pfn[MAX_NUMNODES];
unsigned long __cpuinitdata node_end_pfn[MAX_NUMNODES];
#endif
}
-static void __init setup_bootmem_allocator(void)
+/*
+ * On 32-bit machines, we only put bootmem on the low controller,
+ * since PAs > 4GB can't be used in bootmem. In principle one could
+ * imagine, e.g., multiple 1 GB controllers all of which could support
+ * bootmem, but in practice using controllers this small isn't a
+ * particularly interesting scenario, so we just keep it simple and
+ * use only the first controller for bootmem on 32-bit machines.
+ */
+static inline int node_has_bootmem(int nid)
{
- unsigned long bootmap_size, first_alloc_pfn, last_alloc_pfn;
+#ifdef CONFIG_64BIT
+ return 1;
+#else
+ return nid == 0;
+#endif
+}
- /* Provide a node 0 bdata. */
- NODE_DATA(0)->bdata = &node0_bdata;
+static inline unsigned long alloc_bootmem_pfn(int nid,
+ unsigned long size,
+ unsigned long goal)
+{
+ void *kva = __alloc_bootmem_node(NODE_DATA(nid), size,
+ PAGE_SIZE, goal);
+ unsigned long pfn = kaddr_to_pfn(kva);
+ BUG_ON(goal && PFN_PHYS(pfn) != goal);
+ return pfn;
+}
-#ifdef CONFIG_PCI
- /* Don't let boot memory alias the PCI region. */
- last_alloc_pfn = min(max_low_pfn, pci_reserve_start_pfn);
+static void __init setup_bootmem_allocator_node(int i)
+{
+ unsigned long start, end, mapsize, mapstart;
+
+ if (node_has_bootmem(i)) {
+ NODE_DATA(i)->bdata = &bootmem_node_data[i];
+ } else {
+ /* Share controller zero's bdata for now. */
+ NODE_DATA(i)->bdata = &bootmem_node_data[0];
+ return;
+ }
+
+ /* Skip up to after the bss in node 0. */
+ start = (i == 0) ? min_low_pfn : node_start_pfn[i];
+
+ /* Only lowmem, if we're a HIGHMEM build. */
+#ifdef CONFIG_HIGHMEM
+ end = node_lowmem_end_pfn[i];
#else
- last_alloc_pfn = max_low_pfn;
+ end = node_end_pfn[i];
#endif
- /*
- * Initialize the boot-time allocator (with low memory only):
- * The first argument says where to put the bitmap, and the
- * second says where the end of allocatable memory is.
- */
- bootmap_size = init_bootmem(min_low_pfn, last_alloc_pfn);
+ /* No memory here. */
+ if (end == start)
+ return;
+
+ /* Figure out where the bootmem bitmap is located. */
+ mapsize = bootmem_bootmap_pages(end - start);
+ if (i == 0) {
+ /* Use some space right before the heap on node 0. */
+ mapstart = start;
+ start += mapsize;
+ } else {
+ /* Allocate bitmap on node 0 to avoid page table issues. */
+ mapstart = alloc_bootmem_pfn(0, PFN_PHYS(mapsize), 0);
+ }
+ /* Initialize a node. */
+ init_bootmem_node(NODE_DATA(i), mapstart, start, end);
+
+ /* Free all the space back into the allocator. */
+ free_bootmem(PFN_PHYS(start), PFN_PHYS(end - start));
+
+#if defined(CONFIG_PCI)
/*
- * Let the bootmem allocator use all the space we've given it
- * except for its own bitmap.
+ * Throw away any memory aliased by the PCI region. FIXME: this
+ * is a temporary hack to work around bug 10502, and needs to be
+ * fixed properly.
*/
- first_alloc_pfn = min_low_pfn + PFN_UP(bootmap_size);
- if (first_alloc_pfn >= last_alloc_pfn)
- early_panic("Not enough memory on controller 0 for bootmem\n");
+ if (pci_reserve_start_pfn < end && pci_reserve_end_pfn > start)
+ reserve_bootmem(PFN_PHYS(pci_reserve_start_pfn),
+ PFN_PHYS(pci_reserve_end_pfn -
+ pci_reserve_start_pfn),
+ BOOTMEM_EXCLUSIVE);
+#endif
+}
- free_bootmem(PFN_PHYS(first_alloc_pfn),
- PFN_PHYS(last_alloc_pfn - first_alloc_pfn));
+static void __init setup_bootmem_allocator(void)
+{
+ int i;
+ for (i = 0; i < MAX_NUMNODES; ++i)
+ setup_bootmem_allocator_node(i);
#ifdef CONFIG_KEXEC
if (crashk_res.start != crashk_res.end)
return size;
}
-static inline unsigned long alloc_bootmem_pfn(int size, unsigned long goal)
-{
- void *kva = __alloc_bootmem(size, PAGE_SIZE, goal);
- unsigned long pfn = kaddr_to_pfn(kva);
- BUG_ON(goal && PFN_PHYS(pfn) != goal);
- return pfn;
-}
-
static void __init zone_sizes_init(void)
{
unsigned long zones_size[MAX_NR_ZONES] = { 0 };
* though, there'll be no lowmem, so we just alloc_bootmem
* the memmap. There will be no percpu memory either.
*/
- if (__pfn_to_highbits(start) == 0) {
- /* In low PAs, allocate via bootmem. */
+ if (i != 0 && cpu_isset(i, isolnodes)) {
+ node_memmap_pfn[i] =
+ alloc_bootmem_pfn(0, memmap_size, 0);
+ BUG_ON(node_percpu[i] != 0);
+ } else if (node_has_bootmem(start)) {
unsigned long goal = 0;
node_memmap_pfn[i] =
- alloc_bootmem_pfn(memmap_size, goal);
+ alloc_bootmem_pfn(i, memmap_size, 0);
if (kdata_huge)
goal = PFN_PHYS(lowmem_end) - node_percpu[i];
if (node_percpu[i])
node_percpu_pfn[i] =
- alloc_bootmem_pfn(node_percpu[i], goal);
- } else if (cpu_isset(i, isolnodes)) {
- node_memmap_pfn[i] = alloc_bootmem_pfn(memmap_size, 0);
- BUG_ON(node_percpu[i] != 0);
+ alloc_bootmem_pfn(i, node_percpu[i],
+ goal);
} else {
- /* In high PAs, just reserve some pages. */
+ /* In non-bootmem zones, just reserve some pages. */
node_memmap_pfn[i] = node_free_pfn[i];
node_free_pfn[i] += PFN_UP(memmap_size);
if (!kdata_huge) {
zones_size[ZONE_NORMAL] = end - start;
#endif
- /*
- * Everyone shares node 0's bootmem allocator, but
- * we use alloc_remap(), above, to put the actual
- * struct page array on the individual controllers,
- * which is most of the data that we actually care about.
- * We can't place bootmem allocators on the other
- * controllers since the bootmem allocator can only
- * operate on 32-bit physical addresses.
- */
- NODE_DATA(i)->bdata = NODE_DATA(0)->bdata;
+ /* Take zone metadata from controller 0 if we're isolnode. */
+ if (node_isset(i, isolnodes))
+ NODE_DATA(i)->bdata = &bootmem_node_data[0];
free_area_init_node(i, zones_size, start, NULL);
printk(KERN_DEBUG " Normal zone: %ld per-cpu pages\n",
#endif /* CONFIG_NUMA */
+/*
+ * Initialize hugepage support on this cpu. We do this on all cores
+ * early in boot: before argument parsing for the boot cpu, and after
+ * argument parsing but before the init functions run on the secondaries.
+ * So the values we set up here in the hypervisor may be overridden on
+ * the boot cpu as arguments are parsed.
+ */
+static __cpuinit void init_super_pages(void)
+{
+#ifdef CONFIG_HUGETLB_SUPER_PAGES
+ int i;
+ for (i = 0; i < HUGE_SHIFT_ENTRIES; ++i)
+ hv_set_pte_super_shift(i, huge_shift[i]);
+#endif
+}
+
/**
* setup_cpu() - Do all necessary per-cpu, tile-specific initialization.
* @boot: Is this the boot cpu?
/* Reset the network state on this cpu. */
reset_network_state();
#endif
+
+ init_super_pages();
}
#ifdef CONFIG_BLK_DEV_INITRD
for (i = 0; i < size; i += PAGE_SIZE, ++pfn, ++pg) {
/* Update the vmalloc mapping and page home. */
- pte_t *ptep =
- virt_to_pte(NULL, (unsigned long)ptr + i);
+ unsigned long addr = (unsigned long)ptr + i;
+ pte_t *ptep = virt_to_pte(NULL, addr);
pte_t pte = *ptep;
BUG_ON(pfn != pte_pfn(pte));
pte = hv_pte_set_mode(pte, HV_PTE_MODE_CACHE_TILE_L3);
pte = set_remote_cache_cpu(pte, cpu);
- set_pte(ptep, pte);
+ set_pte_at(&init_mm, addr, ptep, pte);
/* Update the lowmem mapping for consistency. */
lowmem_va = (unsigned long)pfn_to_kaddr(pfn);
BUG_ON(pte_huge(*ptep));
}
BUG_ON(pfn != pte_pfn(*ptep));
- set_pte(ptep, pte);
+ set_pte_at(&init_mm, lowmem_va, ptep, pte);
}
}
projects / ~andy / linux / blobdiff