ia64/xen-unstable

annotate xen/include/xen/mm.h @ 10341:68c22a722e6f

[XEN] Re-increase MAX_ORDER to 20 for the time being. Reducing
breaks domain0 builder.
Signed-off-by: Keir Fraser <keir@xensource.com>
author kaf24@firebug.cl.cam.ac.uk
date Fri Jun 09 08:15:58 2006 +0100 (2006-06-09)
parents 4f1e39ec05d6
children ee3d10828937
rev   line source
kaf24@8726 1 /******************************************************************************
kaf24@8726 2 * include/xen/mm.h
kaf24@8726 3 *
kaf24@8726 4 * Definitions for memory pages, frame numbers, addresses, allocations, etc.
kaf24@8726 5 *
kaf24@8726 6 * Note that Xen must handle several different physical 'address spaces' and
kaf24@8726 7 * there is a consistent terminology for these:
kaf24@8726 8 *
kaf24@8726 9 * 1. gpfn/gpaddr: A guest-specific pseudo-physical frame number or address.
kaf24@8726 10 * 2. gmfn/gmaddr: A machine address from the p.o.v. of a particular guest.
kaf24@8726 11 * 3. mfn/maddr: A real machine frame number or address.
kaf24@8726 12 * 4. pfn/paddr: Used in 'polymorphic' functions that work across all
kaf24@8726 13 * address spaces, depending on context. See the pagetable
kaf24@8726 14 * conversion macros in asm-x86/page.h for examples.
kaf24@8726 15 * Also 'paddr_t' is big enough to store any physical address.
kaf24@8726 16 *
kaf24@8726 17 * This scheme provides consistent function and variable names even when
kaf24@8726 18 * different guests are running in different memory-management modes.
kaf24@8726 19 * 1. A guest running in auto-translated mode (e.g., shadow_mode_translate())
kaf24@8726 20 * will have gpfn == gmfn and gmfn != mfn.
kaf24@8726 21 * 2. A paravirtualised x86 guest will have gpfn != gmfn and gmfn == mfn.
kaf24@8726 22 * 3. A paravirtualised guest with no pseudophysical overlay will have
kaf24@8726 23 * gpfn == gpmfn == mfn.
kaf24@8726 24 *
kaf24@8726 25 * Copyright (c) 2002-2006, K A Fraser <keir@xensource.com>
kaf24@8726 26 */
kaf24@1210 27
kaf24@1211 28 #ifndef __XEN_MM_H__
kaf24@1211 29 #define __XEN_MM_H__
kaf24@1210 30
kaf24@4267 31 #include <xen/config.h>
kaf24@5398 32 #include <xen/types.h>
kaf24@4267 33 #include <xen/list.h>
kaf24@4267 34 #include <xen/spinlock.h>
kaf24@4267 35
kaf24@1941 36 struct domain;
kaf24@8726 37 struct page_info;
kaf24@1936 38
kaf24@3354 39 /* Boot-time allocator. Turns into generic allocator after bootstrap. */
kaf24@8726 40 paddr_t init_boot_allocator(paddr_t bitmap_start);
kaf24@8726 41 void init_boot_pages(paddr_t ps, paddr_t pe);
kaf24@5398 42 unsigned long alloc_boot_pages(unsigned long nr_pfns, unsigned long pfn_align);
kaf24@3354 43 void end_boot_allocator(void);
kaf24@3354 44
kaf24@2806 45 /* Generic allocator. These functions are *not* interrupt-safe. */
kaf24@3461 46 void init_heap_pages(
kaf24@8726 47 unsigned int zone, struct page_info *pg, unsigned long nr_pages);
kaf24@8726 48 struct page_info *alloc_heap_pages(unsigned int zone, unsigned int order);
kaf24@3461 49 void free_heap_pages(
kaf24@8726 50 unsigned int zone, struct page_info *pg, unsigned int order);
kaf24@2772 51 void scrub_heap_pages(void);
kaf24@1936 52
kaf24@2806 53 /* Xen suballocator. These functions are interrupt-safe. */
kaf24@8726 54 void init_xenheap_pages(paddr_t ps, paddr_t pe);
kaf24@5398 55 void *alloc_xenheap_pages(unsigned int order);
kaf24@5398 56 void free_xenheap_pages(void *v, unsigned int order);
kaf24@1920 57 #define alloc_xenheap_page() (alloc_xenheap_pages(0))
kaf24@5398 58 #define free_xenheap_page(v) (free_xenheap_pages(v,0))
kaf24@1749 59
kaf24@2806 60 /* Domain suballocator. These functions are *not* interrupt-safe.*/
kaf24@8726 61 void init_domheap_pages(paddr_t ps, paddr_t pe);
kaf24@8726 62 struct page_info *alloc_domheap_pages(
kaf24@5929 63 struct domain *d, unsigned int order, unsigned int flags);
kaf24@8726 64 void free_domheap_pages(struct page_info *pg, unsigned int order);
kaf24@1936 65 unsigned long avail_domheap_pages(void);
kaf24@5929 66 #define alloc_domheap_page(d) (alloc_domheap_pages(d,0,0))
kaf24@5398 67 #define free_domheap_page(p) (free_domheap_pages(p,0))
kaf24@1210 68
kaf24@5929 69 #define ALLOC_DOM_DMA 1
kaf24@5929 70
kaf24@10340 71 #ifdef CONFIG_PAGEALLOC_MAX_ORDER
kaf24@10340 72 #define MAX_ORDER CONFIG_PAGEALLOC_MAX_ORDER
kaf24@10340 73 #else
kaf24@10341 74 #define MAX_ORDER 20 /* 2^20 contiguous pages */
kaf24@10340 75 #endif
kaf24@9456 76
kaf24@4267 77 /* Automatic page scrubbing for dead domains. */
kaf24@4267 78 extern struct list_head page_scrub_list;
kaf24@4267 79 #define page_scrub_schedule_work() \
kaf24@4267 80 do { \
kaf24@4267 81 if ( !list_empty(&page_scrub_list) ) \
kaf24@4267 82 raise_softirq(PAGE_SCRUB_SOFTIRQ); \
kaf24@4267 83 } while ( 0 )
kaf24@4267 84
kaf24@1941 85 #include <asm/mm.h>
kaf24@1941 86
kaf24@5256 87 #ifndef sync_pagetable_state
kaf24@5256 88 #define sync_pagetable_state(d) ((void)0)
kaf24@5256 89 #endif
kaf24@5256 90
cl349@9211 91 int guest_remove_page(struct domain *d, unsigned long gmfn);
cl349@9211 92
kaf24@1211 93 #endif /* __XEN_MM_H__ */