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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [IA64] cleanup CONFIG_VIRTUAL_MEM_MAP.
# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID 4ed269e73e95cc7618950ab6cea58ca1e1c243db
# Parent bdb08c9ef3d1905721484c47634a019defb79abb
[IA64] cleanup CONFIG_VIRTUAL_MEM_MAP.
Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>
diff -r bdb08c9ef3d1 -r 4ed269e73e95 xen/arch/ia64/xen/mm_init.c
--- a/xen/arch/ia64/xen/mm_init.c Mon Apr 17 08:46:52 2006 -0600
+++ b/xen/arch/ia64/xen/mm_init.c Mon Apr 17 08:47:36 2006 -0600
@@ -8,286 +8,10 @@
#include <linux/kernel.h>
#include <linux/init.h>
-#ifdef XEN
#include <xen/sched.h>
-#endif
-#include <linux/bootmem.h>
-#include <linux/efi.h>
-#include <linux/elf.h>
-#include <linux/mm.h>
-#include <linux/mmzone.h>
-#include <linux/module.h>
-#ifndef XEN
-#include <linux/personality.h>
-#endif
-#include <linux/reboot.h>
-#include <linux/slab.h>
-#include <linux/swap.h>
-#ifndef XEN
-#include <linux/proc_fs.h>
-#endif
-
-#ifndef XEN
-#include <asm/a.out.h>
-#endif
-#include <asm/bitops.h>
-#include <asm/dma.h>
-#ifndef XEN
-#include <asm/ia32.h>
-#endif
-#include <asm/io.h>
-#include <asm/machvec.h>
-#include <asm/numa.h>
-#include <asm/patch.h>
-#include <asm/pgalloc.h>
-#include <asm/sal.h>
-#include <asm/sections.h>
-#include <asm/system.h>
-#include <asm/tlb.h>
-#include <asm/uaccess.h>
-#include <asm/unistd.h>
-#include <asm/mca.h>
#include <asm/vhpt.h>
-#ifndef XEN
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-#endif
-
extern void ia64_tlb_init (void);
-
-unsigned long MAX_DMA_ADDRESS = PAGE_OFFSET + 0x100000000UL;
-
-#ifdef CONFIG_VIRTUAL_MEM_MAP
-unsigned long vmalloc_end = VMALLOC_END_INIT;
-EXPORT_SYMBOL(vmalloc_end);
-struct page_info *vmem_map;
-EXPORT_SYMBOL(vmem_map);
-#endif
-
-// static int pgt_cache_water[2] = { 25, 50 };
-
-#ifndef XEN
-struct page_info *zero_page_memmap_ptr; /* map entry for zero page */
-EXPORT_SYMBOL(zero_page_memmap_ptr);
-
-void *high_memory;
-EXPORT_SYMBOL(high_memory);
-
-/////////////////////////////////////////////
-// following from linux-2.6.7/mm/mmap.c
-/* description of effects of mapping type and prot in current implementation.
- * this is due to the limited x86 page protection hardware. The expected
- * behavior is in parens:
- *
- * map_type prot
- * PROT_NONE PROT_READ PROT_WRITE PROT_EXEC
- * MAP_SHARED r: (no) no r: (yes) yes r: (no) yes r: (no) yes
- * w: (no) no w: (no) no w: (yes) yes w: (no) no
- * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
- *
- * MAP_PRIVATE r: (no) no r: (yes) yes r: (no) yes r: (no) yes
- * w: (no) no w: (no) no w: (copy) copy w: (no) no
- * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
- *
- */
-pgprot_t protection_map[16] = {
- __P000, __P001, __P010, __P011, __P100, __P101, __P110, __P111,
- __S000, __S001, __S010, __S011, __S100, __S101, __S110, __S111
-};
-
-void insert_vm_struct(struct mm_struct * mm, struct vm_area_struct * vma)
-{
- printf("insert_vm_struct: called, not implemented yet\n");
-}
-
-/////////////////////////////////////////////
-//following from linux/mm/memory.c
-
-#ifndef __ARCH_HAS_4LEVEL_HACK
-/*
- * Allocate page upper directory.
- *
- * We've already handled the fast-path in-line, and we own the
- * page table lock.
- *
- * On a two-level or three-level page table, this ends up actually being
- * entirely optimized away.
- */
-pud_t fastcall *__pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long
address)
-{
- pud_t *new;
-
- spin_unlock(&mm->page_table_lock);
- new = pud_alloc_one(mm, address);
- spin_lock(&mm->page_table_lock);
- if (!new)
- return NULL;
-
- /*
- * Because we dropped the lock, we should re-check the
- * entry, as somebody else could have populated it..
- */
- if (pgd_present(*pgd)) {
- pud_free(new);
- goto out;
- }
- pgd_populate(mm, pgd, new);
- out:
- return pud_offset(pgd, address);
-}
-
-/*
- * Allocate page middle directory.
- *
- * We've already handled the fast-path in-line, and we own the
- * page table lock.
- *
- * On a two-level page table, this ends up actually being entirely
- * optimized away.
- */
-pmd_t fastcall *__pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long
address)
-{
- pmd_t *new;
-
- spin_unlock(&mm->page_table_lock);
- new = pmd_alloc_one(mm, address);
- spin_lock(&mm->page_table_lock);
- if (!new)
- return NULL;
-
- /*
- * Because we dropped the lock, we should re-check the
- * entry, as somebody else could have populated it..
- */
- if (pud_present(*pud)) {
- pmd_free(new);
- goto out;
- }
- pud_populate(mm, pud, new);
- out:
- return pmd_offset(pud, address);
-}
-#endif
-
-pte_t fastcall * pte_alloc_map(struct mm_struct *mm, pmd_t *pmd, unsigned long
address)
-{
- if (!pmd_present(*pmd)) {
- struct page_info *new;
-
- spin_unlock(&mm->page_table_lock);
- new = pte_alloc_one(mm, address);
- spin_lock(&mm->page_table_lock);
- if (!new)
- return NULL;
-
- /*
- * Because we dropped the lock, we should re-check the
- * entry, as somebody else could have populated it..
- */
- if (pmd_present(*pmd)) {
- pte_free(new);
- goto out;
- }
- inc_page_state(nr_page_table_pages);
- pmd_populate(mm, pmd, new);
- }
-out:
- return pte_offset_map(pmd, address);
-}
-/////////////////////////////////////////////
-#endif /* XEN */
-
-#if 0
-void
-update_mmu_cache (struct vm_area_struct *vma, unsigned long vaddr, pte_t pte)
-{
- unsigned long addr;
- struct page_info *page;
-
- if (!pte_exec(pte))
- return; /* not an executable page... */
-
- page = pte_page(pte);
- /* don't use VADDR: it may not be mapped on this CPU (or may have just
been flushed): */
- addr = (unsigned long) page_address(page);
-
- if (test_bit(PG_arch_1, &page->flags))
- return; /* i-cache is already coherent
with d-cache */
-
- flush_icache_range(addr, addr + PAGE_SIZE);
- set_bit(PG_arch_1, &page->flags); /* mark page as clean */
-}
-#endif
-
-#if 0
-inline void
-ia64_set_rbs_bot (void)
-{
-#ifdef XEN
- unsigned long stack_size = MAX_USER_STACK_SIZE;
-#else
- unsigned long stack_size = current->rlim[RLIMIT_STACK].rlim_max & -16;
-#endif
-
- if (stack_size > MAX_USER_STACK_SIZE)
- stack_size = MAX_USER_STACK_SIZE;
- current->arch._thread.rbs_bot = STACK_TOP - stack_size;
-}
-#endif
-
-/*
- * This performs some platform-dependent address space initialization.
- * On IA-64, we want to setup the VM area for the register backing
- * store (which grows upwards) and install the gateway page which is
- * used for signal trampolines, etc.
- */
-#if 0
-void
-ia64_init_addr_space (void)
-{
-#ifdef XEN
-printf("ia64_init_addr_space: called, not implemented\n");
-#else
- struct vm_area_struct *vma;
-
- ia64_set_rbs_bot();
-
- /*
- * If we're out of memory and kmem_cache_alloc() returns NULL, we
simply ignore
- * the problem. When the process attempts to write to the register
backing store
- * for the first time, it will get a SEGFAULT in this case.
- */
- vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (vma) {
- memset(vma, 0, sizeof(*vma));
- vma->vm_mm = current->mm;
- vma->vm_start = current->arch._thread.rbs_bot & PAGE_MASK;
- vma->vm_end = vma->vm_start + PAGE_SIZE;
- vma->vm_page_prot = protection_map[VM_DATA_DEFAULT_FLAGS & 0x7];
- vma->vm_flags =
VM_READ|VM_WRITE|VM_MAYREAD|VM_MAYWRITE|VM_GROWSUP;
- insert_vm_struct(current->mm, vma);
- }
-
- /* map NaT-page at address zero to speed up speculative dereferencing
of NULL: */
- if (!(current->personality & MMAP_PAGE_ZERO)) {
- vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (vma) {
- memset(vma, 0, sizeof(*vma));
- vma->vm_mm = current->mm;
- vma->vm_end = PAGE_SIZE;
- vma->vm_page_prot = __pgprot(pgprot_val(PAGE_READONLY)
| _PAGE_MA_NAT);
- vma->vm_flags = VM_READ | VM_MAYREAD | VM_IO |
VM_RESERVED;
- insert_vm_struct(current->mm, vma);
- }
- }
-#endif
-}
-#endif
-
-void setup_gate (void)
-{
- printk("setup_gate not-implemented.\n");
-}
void __devinit
ia64_mmu_init (void *my_cpu_data)
@@ -384,166 +108,6 @@ ia64_mmu_init (void *my_cpu_data)
#endif
}
-#ifdef CONFIG_VIRTUAL_MEM_MAP
-
-int
-create_mem_map_page_table (u64 start, u64 end, void *arg)
-{
- unsigned long address, start_page, end_page;
- struct page_info *map_start, *map_end;
- int node;
- pgd_t *pgd;
- pmd_t *pmd;
- pte_t *pte;
-
- map_start = vmem_map + (__pa(start) >> PAGE_SHIFT);
- map_end = vmem_map + (__pa(end) >> PAGE_SHIFT);
-
- start_page = (unsigned long) map_start & PAGE_MASK;
- end_page = PAGE_ALIGN((unsigned long) map_end);
- node = paddr_to_nid(__pa(start));
-
- for (address = start_page; address < end_page; address += PAGE_SIZE) {
- pgd = pgd_offset_k(address);
- if (pgd_none(*pgd))
- pgd_populate(&init_mm, pgd,
alloc_bootmem_pages_node(NODE_DATA(node), PAGE_SIZE));
- pmd = pmd_offset(pgd, address);
-
- if (pmd_none(*pmd))
- pmd_populate_kernel(&init_mm, pmd,
alloc_bootmem_pages_node(NODE_DATA(node), PAGE_SIZE));
- pte = pte_offset_kernel(pmd, address);
-
- if (pte_none(*pte))
- set_pte(pte,
pfn_pte(__pa(alloc_bootmem_pages_node(NODE_DATA(node), PAGE_SIZE)) >>
PAGE_SHIFT,
- PAGE_KERNEL));
- }
- return 0;
-}
-
-struct memmap_init_callback_data {
- struct page_info *start;
- struct page_info *end;
- int nid;
- unsigned long zone;
-};
-
-static int
-virtual_memmap_init (u64 start, u64 end, void *arg)
-{
- struct memmap_init_callback_data *args;
- struct page_info *map_start, *map_end;
-
- args = (struct memmap_init_callback_data *) arg;
-
- map_start = vmem_map + (__pa(start) >> PAGE_SHIFT);
- map_end = vmem_map + (__pa(end) >> PAGE_SHIFT);
-
- if (map_start < args->start)
- map_start = args->start;
- if (map_end > args->end)
- map_end = args->end;
-
- /*
- * We have to initialize "out of bounds" struct page_info elements that
fit completely
- * on the same pages that were allocated for the "in bounds" elements
because they
- * may be referenced later (and found to be "reserved").
- */
- map_start -= ((unsigned long) map_start & (PAGE_SIZE - 1)) /
sizeof(struct page_info);
- map_end += ((PAGE_ALIGN((unsigned long) map_end) - (unsigned long)
map_end)
- / sizeof(struct page_info));
-
- if (map_start < map_end)
- memmap_init_zone(map_start, (unsigned long) (map_end -
map_start),
- args->nid, args->zone, page_to_mfn(map_start));
- return 0;
-}
-
-void
-memmap_init (struct page_info *start, unsigned long size, int nid,
- unsigned long zone, unsigned long start_pfn)
-{
- if (!vmem_map)
- memmap_init_zone(start, size, nid, zone, start_pfn);
- else {
- struct memmap_init_callback_data args;
-
- args.start = start;
- args.end = start + size;
- args.nid = nid;
- args.zone = zone;
-
- efi_memmap_walk(virtual_memmap_init, &args);
- }
-}
-
-int
-ia64_mfn_valid (unsigned long pfn)
-{
- char byte;
- struct page_info *pg = mfn_to_page(pfn);
-
- return (__get_user(byte, (char *) pg) == 0)
- && ((((u64)pg & PAGE_MASK) == (((u64)(pg + 1) - 1) & PAGE_MASK))
- || (__get_user(byte, (char *) (pg + 1) - 1) == 0));
-}
-EXPORT_SYMBOL(ia64_mfn_valid);
-
-int
-find_largest_hole (u64 start, u64 end, void *arg)
-{
- u64 *max_gap = arg;
-
- static u64 last_end = PAGE_OFFSET;
-
- /* NOTE: this algorithm assumes efi memmap table is ordered */
-
-#ifdef XEN
-//printf("find_largest_hole:
start=%lx,end=%lx,max_gap=%lx\n",start,end,*(unsigned long *)arg);
-#endif
- if (*max_gap < (start - last_end))
- *max_gap = start - last_end;
- last_end = end;
-#ifdef XEN
-//printf("find_largest_hole2: max_gap=%lx,last_end=%lx\n",*max_gap,last_end);
-#endif
- return 0;
-}
-#endif /* CONFIG_VIRTUAL_MEM_MAP */
-
-#ifndef XEN
-static int
-count_reserved_pages (u64 start, u64 end, void *arg)
-{
- unsigned long num_reserved = 0;
- unsigned long *count = arg;
-
- for (; start < end; start += PAGE_SIZE)
- if (PageReserved(virt_to_page(start)))
- ++num_reserved;
- *count += num_reserved;
- return 0;
-}
-#endif
-
-/*
- * Boot command-line option "nolwsys" can be used to disable the use of any
light-weight
- * system call handler. When this option is in effect, all fsyscalls will end
up bubbling
- * down into the kernel and calling the normal (heavy-weight) syscall handler.
This is
- * useful for performance testing, but conceivably could also come in handy
for debugging
- * purposes.
- */
-
-static int nolwsys;
-
-static int __init
-nolwsys_setup (char *s)
-{
- nolwsys = 1;
- return 1;
-}
-
-__setup("nolwsys", nolwsys_setup);
-
void
mem_init (void)
{
diff -r bdb08c9ef3d1 -r 4ed269e73e95 xen/include/asm-ia64/mm.h
--- a/xen/include/asm-ia64/mm.h Mon Apr 17 08:46:52 2006 -0600
+++ b/xen/include/asm-ia64/mm.h Mon Apr 17 08:47:36 2006 -0600
@@ -139,11 +139,7 @@ extern unsigned int free_pfns;
extern unsigned int free_pfns;
extern unsigned long max_page;
-#ifdef CONFIG_VIRTUAL_MEM_MAP
-void __init init_frametable(void *frametable_vstart, unsigned long nr_pages);
-#else
extern void __init init_frametable(void);
-#endif
void add_to_domain_alloc_list(unsigned long ps, unsigned long pe);
extern unsigned long gmfn_to_mfn_foreign(struct domain *d, unsigned long gpfn);
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