vga: improve documentation
[qemu.git] / memory.h
1 /*
2 * Physical memory management API
3 *
4 * Copyright 2011 Red Hat, Inc. and/or its affiliates
5 *
6 * Authors:
7 * Avi Kivity <avi@redhat.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
11 *
12 */
13
14 #ifndef MEMORY_H
15 #define MEMORY_H
16
17 #ifndef CONFIG_USER_ONLY
18
19 #include <stdint.h>
20 #include <stdbool.h>
21 #include "qemu-common.h"
22 #include "cpu-common.h"
23 #include "targphys.h"
24 #include "qemu-queue.h"
25 #include "iorange.h"
26 #include "ioport.h"
27 #include "int128.h"
28
29 typedef struct MemoryRegionOps MemoryRegionOps;
30 typedef struct MemoryRegion MemoryRegion;
31 typedef struct MemoryRegionPortio MemoryRegionPortio;
32 typedef struct MemoryRegionMmio MemoryRegionMmio;
33
34 /* Must match *_DIRTY_FLAGS in cpu-all.h. To be replaced with dynamic
35 * registration.
36 */
37 #define DIRTY_MEMORY_VGA 0
38 #define DIRTY_MEMORY_CODE 1
39 #define DIRTY_MEMORY_MIGRATION 3
40
41 struct MemoryRegionMmio {
42 CPUReadMemoryFunc *read[3];
43 CPUWriteMemoryFunc *write[3];
44 };
45
46 /*
47 * Memory region callbacks
48 */
49 struct MemoryRegionOps {
50 /* Read from the memory region. @addr is relative to @mr; @size is
51 * in bytes. */
52 uint64_t (*read)(void *opaque,
53 target_phys_addr_t addr,
54 unsigned size);
55 /* Write to the memory region. @addr is relative to @mr; @size is
56 * in bytes. */
57 void (*write)(void *opaque,
58 target_phys_addr_t addr,
59 uint64_t data,
60 unsigned size);
61
62 enum device_endian endianness;
63 /* Guest-visible constraints: */
64 struct {
65 /* If nonzero, specify bounds on access sizes beyond which a machine
66 * check is thrown.
67 */
68 unsigned min_access_size;
69 unsigned max_access_size;
70 /* If true, unaligned accesses are supported. Otherwise unaligned
71 * accesses throw machine checks.
72 */
73 bool unaligned;
74 /*
75 * If present, and returns #false, the transaction is not accepted
76 * by the device (and results in machine dependent behaviour such
77 * as a machine check exception).
78 */
79 bool (*accepts)(void *opaque, target_phys_addr_t addr,
80 unsigned size, bool is_write);
81 } valid;
82 /* Internal implementation constraints: */
83 struct {
84 /* If nonzero, specifies the minimum size implemented. Smaller sizes
85 * will be rounded upwards and a partial result will be returned.
86 */
87 unsigned min_access_size;
88 /* If nonzero, specifies the maximum size implemented. Larger sizes
89 * will be done as a series of accesses with smaller sizes.
90 */
91 unsigned max_access_size;
92 /* If true, unaligned accesses are supported. Otherwise all accesses
93 * are converted to (possibly multiple) naturally aligned accesses.
94 */
95 bool unaligned;
96 } impl;
97
98 /* If .read and .write are not present, old_portio may be used for
99 * backwards compatibility with old portio registration
100 */
101 const MemoryRegionPortio *old_portio;
102 /* If .read and .write are not present, old_mmio may be used for
103 * backwards compatibility with old mmio registration
104 */
105 const MemoryRegionMmio old_mmio;
106 };
107
108 typedef struct CoalescedMemoryRange CoalescedMemoryRange;
109 typedef struct MemoryRegionIoeventfd MemoryRegionIoeventfd;
110
111 struct MemoryRegion {
112 /* All fields are private - violators will be prosecuted */
113 const MemoryRegionOps *ops;
114 void *opaque;
115 MemoryRegion *parent;
116 Int128 size;
117 target_phys_addr_t addr;
118 target_phys_addr_t offset;
119 void (*destructor)(MemoryRegion *mr);
120 ram_addr_t ram_addr;
121 IORange iorange;
122 bool subpage;
123 bool terminates;
124 bool readable;
125 bool ram;
126 bool readonly; /* For RAM regions */
127 bool enabled;
128 bool rom_device;
129 bool warning_printed; /* For reservations */
130 MemoryRegion *alias;
131 target_phys_addr_t alias_offset;
132 unsigned priority;
133 bool may_overlap;
134 QTAILQ_HEAD(subregions, MemoryRegion) subregions;
135 QTAILQ_ENTRY(MemoryRegion) subregions_link;
136 QTAILQ_HEAD(coalesced_ranges, CoalescedMemoryRange) coalesced;
137 const char *name;
138 uint8_t dirty_log_mask;
139 unsigned ioeventfd_nb;
140 MemoryRegionIoeventfd *ioeventfds;
141 };
142
143 struct MemoryRegionPortio {
144 uint32_t offset;
145 uint32_t len;
146 unsigned size;
147 IOPortReadFunc *read;
148 IOPortWriteFunc *write;
149 };
150
151 #define PORTIO_END_OF_LIST() { }
152
153 typedef struct MemoryRegionSection MemoryRegionSection;
154
155 /**
156 * MemoryRegionSection: describes a fragment of a #MemoryRegion
157 *
158 * @mr: the region, or %NULL if empty
159 * @address_space: the address space the region is mapped in
160 * @offset_within_region: the beginning of the section, relative to @mr's start
161 * @size: the size of the section; will not exceed @mr's boundaries
162 * @offset_within_address_space: the address of the first byte of the section
163 * relative to the region's address space
164 */
165 struct MemoryRegionSection {
166 MemoryRegion *mr;
167 MemoryRegion *address_space;
168 target_phys_addr_t offset_within_region;
169 uint64_t size;
170 target_phys_addr_t offset_within_address_space;
171 };
172
173 typedef struct MemoryListener MemoryListener;
174
175 /**
176 * MemoryListener: callbacks structure for updates to the physical memory map
177 *
178 * Allows a component to adjust to changes in the guest-visible memory map.
179 * Use with memory_listener_register() and memory_listener_unregister().
180 */
181 struct MemoryListener {
182 void (*region_add)(MemoryListener *listener, MemoryRegionSection *section);
183 void (*region_del)(MemoryListener *listener, MemoryRegionSection *section);
184 void (*log_start)(MemoryListener *listener, MemoryRegionSection *section);
185 void (*log_stop)(MemoryListener *listener, MemoryRegionSection *section);
186 void (*log_sync)(MemoryListener *listener, MemoryRegionSection *section);
187 void (*log_global_start)(MemoryListener *listener);
188 void (*log_global_stop)(MemoryListener *listener);
189 QLIST_ENTRY(MemoryListener) link;
190 };
191
192 /**
193 * memory_region_init: Initialize a memory region
194 *
195 * The region typically acts as a container for other memory regions. Use
196 * memory_region_add_subregion() to add subregions.
197 *
198 * @mr: the #MemoryRegion to be initialized
199 * @name: used for debugging; not visible to the user or ABI
200 * @size: size of the region; any subregions beyond this size will be clipped
201 */
202 void memory_region_init(MemoryRegion *mr,
203 const char *name,
204 uint64_t size);
205 /**
206 * memory_region_init_io: Initialize an I/O memory region.
207 *
208 * Accesses into the region will cause the callbacks in @ops to be called.
209 * if @size is nonzero, subregions will be clipped to @size.
210 *
211 * @mr: the #MemoryRegion to be initialized.
212 * @ops: a structure containing read and write callbacks to be used when
213 * I/O is performed on the region.
214 * @opaque: passed to to the read and write callbacks of the @ops structure.
215 * @name: used for debugging; not visible to the user or ABI
216 * @size: size of the region.
217 */
218 void memory_region_init_io(MemoryRegion *mr,
219 const MemoryRegionOps *ops,
220 void *opaque,
221 const char *name,
222 uint64_t size);
223
224 /**
225 * memory_region_init_ram: Initialize RAM memory region. Accesses into the
226 * region will modify memory directly.
227 *
228 * @mr: the #MemoryRegion to be initialized.
229 * @name: the name of the region.
230 * @size: size of the region.
231 */
232 void memory_region_init_ram(MemoryRegion *mr,
233 const char *name,
234 uint64_t size);
235
236 /**
237 * memory_region_init_ram: Initialize RAM memory region from a user-provided.
238 * pointer. Accesses into the region will modify
239 * memory directly.
240 *
241 * @mr: the #MemoryRegion to be initialized.
242 * @name: the name of the region.
243 * @size: size of the region.
244 * @ptr: memory to be mapped; must contain at least @size bytes.
245 */
246 void memory_region_init_ram_ptr(MemoryRegion *mr,
247 const char *name,
248 uint64_t size,
249 void *ptr);
250
251 /**
252 * memory_region_init_alias: Initialize a memory region that aliases all or a
253 * part of another memory region.
254 *
255 * @mr: the #MemoryRegion to be initialized.
256 * @name: used for debugging; not visible to the user or ABI
257 * @orig: the region to be referenced; @mr will be equivalent to
258 * @orig between @offset and @offset + @size - 1.
259 * @offset: start of the section in @orig to be referenced.
260 * @size: size of the region.
261 */
262 void memory_region_init_alias(MemoryRegion *mr,
263 const char *name,
264 MemoryRegion *orig,
265 target_phys_addr_t offset,
266 uint64_t size);
267
268 /**
269 * memory_region_init_rom_device: Initialize a ROM memory region. Writes are
270 * handled via callbacks.
271 *
272 * @mr: the #MemoryRegion to be initialized.
273 * @ops: callbacks for write access handling.
274 * @name: the name of the region.
275 * @size: size of the region.
276 */
277 void memory_region_init_rom_device(MemoryRegion *mr,
278 const MemoryRegionOps *ops,
279 void *opaque,
280 const char *name,
281 uint64_t size);
282
283 /**
284 * memory_region_init_reservation: Initialize a memory region that reserves
285 * I/O space.
286 *
287 * A reservation region primariy serves debugging purposes. It claims I/O
288 * space that is not supposed to be handled by QEMU itself. Any access via
289 * the memory API will cause an abort().
290 *
291 * @mr: the #MemoryRegion to be initialized
292 * @name: used for debugging; not visible to the user or ABI
293 * @size: size of the region.
294 */
295 void memory_region_init_reservation(MemoryRegion *mr,
296 const char *name,
297 uint64_t size);
298 /**
299 * memory_region_destroy: Destroy a memory region and reclaim all resources.
300 *
301 * @mr: the region to be destroyed. May not currently be a subregion
302 * (see memory_region_add_subregion()) or referenced in an alias
303 * (see memory_region_init_alias()).
304 */
305 void memory_region_destroy(MemoryRegion *mr);
306
307 /**
308 * memory_region_size: get a memory region's size.
309 *
310 * @mr: the memory region being queried.
311 */
312 uint64_t memory_region_size(MemoryRegion *mr);
313
314 /**
315 * memory_region_is_ram: check whether a memory region is random access
316 *
317 * Returns %true is a memory region is random access.
318 *
319 * @mr: the memory region being queried
320 */
321 bool memory_region_is_ram(MemoryRegion *mr);
322
323 /**
324 * memory_region_name: get a memory region's name
325 *
326 * Returns the string that was used to initialize the memory region.
327 *
328 * @mr: the memory region being queried
329 */
330 const char *memory_region_name(MemoryRegion *mr);
331
332 /**
333 * memory_region_is_logging: return whether a memory region is logging writes
334 *
335 * Returns %true if the memory region is logging writes
336 *
337 * @mr: the memory region being queried
338 */
339 bool memory_region_is_logging(MemoryRegion *mr);
340
341 /**
342 * memory_region_is_rom: check whether a memory region is ROM
343 *
344 * Returns %true is a memory region is read-only memory.
345 *
346 * @mr: the memory region being queried
347 */
348 bool memory_region_is_rom(MemoryRegion *mr);
349
350 /**
351 * memory_region_get_ram_ptr: Get a pointer into a RAM memory region.
352 *
353 * Returns a host pointer to a RAM memory region (created with
354 * memory_region_init_ram() or memory_region_init_ram_ptr()). Use with
355 * care.
356 *
357 * @mr: the memory region being queried.
358 */
359 void *memory_region_get_ram_ptr(MemoryRegion *mr);
360
361 /**
362 * memory_region_set_offset: Sets an offset to be added to MemoryRegionOps
363 * callbacks.
364 *
365 * This function is deprecated and should not be used in new code.
366 */
367 void memory_region_set_offset(MemoryRegion *mr, target_phys_addr_t offset);
368
369 /**
370 * memory_region_set_log: Turn dirty logging on or off for a region.
371 *
372 * Turns dirty logging on or off for a specified client (display, migration).
373 * Only meaningful for RAM regions.
374 *
375 * @mr: the memory region being updated.
376 * @log: whether dirty logging is to be enabled or disabled.
377 * @client: the user of the logging information; %DIRTY_MEMORY_MIGRATION or
378 * %DIRTY_MEMORY_VGA.
379 */
380 void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client);
381
382 /**
383 * memory_region_get_dirty: Check whether a range of bytes is dirty
384 * for a specified client.
385 *
386 * Checks whether a range of bytes has been written to since the last
387 * call to memory_region_reset_dirty() with the same @client. Dirty logging
388 * must be enabled.
389 *
390 * @mr: the memory region being queried.
391 * @addr: the address (relative to the start of the region) being queried.
392 * @size: the size of the range being queried.
393 * @client: the user of the logging information; %DIRTY_MEMORY_MIGRATION or
394 * %DIRTY_MEMORY_VGA.
395 */
396 bool memory_region_get_dirty(MemoryRegion *mr, target_phys_addr_t addr,
397 target_phys_addr_t size, unsigned client);
398
399 /**
400 * memory_region_set_dirty: Mark a range of bytes as dirty in a memory region.
401 *
402 * Marks a range of bytes as dirty, after it has been dirtied outside
403 * guest code.
404 *
405 * @mr: the memory region being dirtied.
406 * @addr: the address (relative to the start of the region) being dirtied.
407 * @size: size of the range being dirtied.
408 */
409 void memory_region_set_dirty(MemoryRegion *mr, target_phys_addr_t addr,
410 target_phys_addr_t size);
411
412 /**
413 * memory_region_sync_dirty_bitmap: Synchronize a region's dirty bitmap with
414 * any external TLBs (e.g. kvm)
415 *
416 * Flushes dirty information from accelerators such as kvm and vhost-net
417 * and makes it available to users of the memory API.
418 *
419 * @mr: the region being flushed.
420 */
421 void memory_region_sync_dirty_bitmap(MemoryRegion *mr);
422
423 /**
424 * memory_region_reset_dirty: Mark a range of pages as clean, for a specified
425 * client.
426 *
427 * Marks a range of pages as no longer dirty.
428 *
429 * @mr: the region being updated.
430 * @addr: the start of the subrange being cleaned.
431 * @size: the size of the subrange being cleaned.
432 * @client: the user of the logging information; %DIRTY_MEMORY_MIGRATION or
433 * %DIRTY_MEMORY_VGA.
434 */
435 void memory_region_reset_dirty(MemoryRegion *mr, target_phys_addr_t addr,
436 target_phys_addr_t size, unsigned client);
437
438 /**
439 * memory_region_set_readonly: Turn a memory region read-only (or read-write)
440 *
441 * Allows a memory region to be marked as read-only (turning it into a ROM).
442 * only useful on RAM regions.
443 *
444 * @mr: the region being updated.
445 * @readonly: whether rhe region is to be ROM or RAM.
446 */
447 void memory_region_set_readonly(MemoryRegion *mr, bool readonly);
448
449 /**
450 * memory_region_rom_device_set_readable: enable/disable ROM readability
451 *
452 * Allows a ROM device (initialized with memory_region_init_rom_device() to
453 * to be marked as readable (default) or not readable. When it is readable,
454 * the device is mapped to guest memory. When not readable, reads are
455 * forwarded to the #MemoryRegion.read function.
456 *
457 * @mr: the memory region to be updated
458 * @readable: whether reads are satisified directly (%true) or via callbacks
459 * (%false)
460 */
461 void memory_region_rom_device_set_readable(MemoryRegion *mr, bool readable);
462
463 /**
464 * memory_region_set_coalescing: Enable memory coalescing for the region.
465 *
466 * Enabled writes to a region to be queued for later processing. MMIO ->write
467 * callbacks may be delayed until a non-coalesced MMIO is issued.
468 * Only useful for IO regions. Roughly similar to write-combining hardware.
469 *
470 * @mr: the memory region to be write coalesced
471 */
472 void memory_region_set_coalescing(MemoryRegion *mr);
473
474 /**
475 * memory_region_add_coalescing: Enable memory coalescing for a sub-range of
476 * a region.
477 *
478 * Like memory_region_set_coalescing(), but works on a sub-range of a region.
479 * Multiple calls can be issued coalesced disjoint ranges.
480 *
481 * @mr: the memory region to be updated.
482 * @offset: the start of the range within the region to be coalesced.
483 * @size: the size of the subrange to be coalesced.
484 */
485 void memory_region_add_coalescing(MemoryRegion *mr,
486 target_phys_addr_t offset,
487 uint64_t size);
488
489 /**
490 * memory_region_clear_coalescing: Disable MMIO coalescing for the region.
491 *
492 * Disables any coalescing caused by memory_region_set_coalescing() or
493 * memory_region_add_coalescing(). Roughly equivalent to uncacheble memory
494 * hardware.
495 *
496 * @mr: the memory region to be updated.
497 */
498 void memory_region_clear_coalescing(MemoryRegion *mr);
499
500 /**
501 * memory_region_add_eventfd: Request an eventfd to be triggered when a word
502 * is written to a location.
503 *
504 * Marks a word in an IO region (initialized with memory_region_init_io())
505 * as a trigger for an eventfd event. The I/O callback will not be called.
506 * The caller must be prepared to handle failure (that is, take the required
507 * action if the callback _is_ called).
508 *
509 * @mr: the memory region being updated.
510 * @addr: the address within @mr that is to be monitored
511 * @size: the size of the access to trigger the eventfd
512 * @match_data: whether to match against @data, instead of just @addr
513 * @data: the data to match against the guest write
514 * @fd: the eventfd to be triggered when @addr, @size, and @data all match.
515 **/
516 void memory_region_add_eventfd(MemoryRegion *mr,
517 target_phys_addr_t addr,
518 unsigned size,
519 bool match_data,
520 uint64_t data,
521 int fd);
522
523 /**
524 * memory_region_del_eventfd: Cancel an eventfd.
525 *
526 * Cancels an eventfd trigger requested by a previous
527 * memory_region_add_eventfd() call.
528 *
529 * @mr: the memory region being updated.
530 * @addr: the address within @mr that is to be monitored
531 * @size: the size of the access to trigger the eventfd
532 * @match_data: whether to match against @data, instead of just @addr
533 * @data: the data to match against the guest write
534 * @fd: the eventfd to be triggered when @addr, @size, and @data all match.
535 */
536 void memory_region_del_eventfd(MemoryRegion *mr,
537 target_phys_addr_t addr,
538 unsigned size,
539 bool match_data,
540 uint64_t data,
541 int fd);
542 /**
543 * memory_region_add_subregion: Add a subregion to a container.
544 *
545 * Adds a subregion at @offset. The subregion may not overlap with other
546 * subregions (except for those explicitly marked as overlapping). A region
547 * may only be added once as a subregion (unless removed with
548 * memory_region_del_subregion()); use memory_region_init_alias() if you
549 * want a region to be a subregion in multiple locations.
550 *
551 * @mr: the region to contain the new subregion; must be a container
552 * initialized with memory_region_init().
553 * @offset: the offset relative to @mr where @subregion is added.
554 * @subregion: the subregion to be added.
555 */
556 void memory_region_add_subregion(MemoryRegion *mr,
557 target_phys_addr_t offset,
558 MemoryRegion *subregion);
559 /**
560 * memory_region_add_subregion: Add a subregion to a container, with overlap.
561 *
562 * Adds a subregion at @offset. The subregion may overlap with other
563 * subregions. Conflicts are resolved by having a higher @priority hide a
564 * lower @priority. Subregions without priority are taken as @priority 0.
565 * A region may only be added once as a subregion (unless removed with
566 * memory_region_del_subregion()); use memory_region_init_alias() if you
567 * want a region to be a subregion in multiple locations.
568 *
569 * @mr: the region to contain the new subregion; must be a container
570 * initialized with memory_region_init().
571 * @offset: the offset relative to @mr where @subregion is added.
572 * @subregion: the subregion to be added.
573 * @priority: used for resolving overlaps; highest priority wins.
574 */
575 void memory_region_add_subregion_overlap(MemoryRegion *mr,
576 target_phys_addr_t offset,
577 MemoryRegion *subregion,
578 unsigned priority);
579
580 /**
581 * memory_region_get_ram_addr: Get the ram address associated with a memory
582 * region
583 *
584 * DO NOT USE THIS FUNCTION. This is a temporary workaround while the Xen
585 * code is being reworked.
586 */
587 ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr);
588
589 /**
590 * memory_region_del_subregion: Remove a subregion.
591 *
592 * Removes a subregion from its container.
593 *
594 * @mr: the container to be updated.
595 * @subregion: the region being removed; must be a current subregion of @mr.
596 */
597 void memory_region_del_subregion(MemoryRegion *mr,
598 MemoryRegion *subregion);
599
600 /*
601 * memory_region_set_enabled: dynamically enable or disable a region
602 *
603 * Enables or disables a memory region. A disabled memory region
604 * ignores all accesses to itself and its subregions. It does not
605 * obscure sibling subregions with lower priority - it simply behaves as
606 * if it was removed from the hierarchy.
607 *
608 * Regions default to being enabled.
609 *
610 * @mr: the region to be updated
611 * @enabled: whether to enable or disable the region
612 */
613 void memory_region_set_enabled(MemoryRegion *mr, bool enabled);
614
615 /*
616 * memory_region_set_address: dynamically update the address of a region
617 *
618 * Dynamically updates the address of a region, relative to its parent.
619 * May be used on regions are currently part of a memory hierarchy.
620 *
621 * @mr: the region to be updated
622 * @addr: new address, relative to parent region
623 */
624 void memory_region_set_address(MemoryRegion *mr, target_phys_addr_t addr);
625
626 /*
627 * memory_region_set_alias_offset: dynamically update a memory alias's offset
628 *
629 * Dynamically updates the offset into the target region that an alias points
630 * to, as if the fourth argument to memory_region_init_alias() has changed.
631 *
632 * @mr: the #MemoryRegion to be updated; should be an alias.
633 * @offset: the new offset into the target memory region
634 */
635 void memory_region_set_alias_offset(MemoryRegion *mr,
636 target_phys_addr_t offset);
637
638 /**
639 * memory_region_find: locate a MemoryRegion in an address space
640 *
641 * Locates the first #MemoryRegion within an address space given by
642 * @address_space that overlaps the range given by @addr and @size.
643 *
644 * Returns a #MemoryRegionSection that describes a contiguous overlap.
645 * It will have the following characteristics:
646 * .@offset_within_address_space >= @addr
647 * .@offset_within_address_space + .@size <= @addr + @size
648 * .@size = 0 iff no overlap was found
649 * .@mr is non-%NULL iff an overlap was found
650 *
651 * @address_space: a top-level (i.e. parentless) region that contains
652 * the region to be found
653 * @addr: start of the area within @address_space to be searched
654 * @size: size of the area to be searched
655 */
656 MemoryRegionSection memory_region_find(MemoryRegion *address_space,
657 target_phys_addr_t addr, uint64_t size);
658
659
660 /**
661 * memory_global_sync_dirty_bitmap: synchronize the dirty log for all memory
662 *
663 * Synchronizes the dirty page log for an entire address space.
664 * @address_space: a top-level (i.e. parentless) region that contains the
665 * memory being synchronized
666 */
667 void memory_global_sync_dirty_bitmap(MemoryRegion *address_space);
668
669 /**
670 * memory_region_transaction_begin: Start a transaction.
671 *
672 * During a transaction, changes will be accumulated and made visible
673 * only when the transaction ends (is committed).
674 */
675 void memory_region_transaction_begin(void);
676
677 /**
678 * memory_region_transaction_commit: Commit a transaction and make changes
679 * visible to the guest.
680 */
681 void memory_region_transaction_commit(void);
682
683 /**
684 * memory_listener_register: register callbacks to be called when memory
685 * sections are mapped or unmapped into an address
686 * space
687 *
688 * @listener: an object containing the callbacks to be called
689 */
690 void memory_listener_register(MemoryListener *listener);
691
692 /**
693 * memory_listener_unregister: undo the effect of memory_listener_register()
694 *
695 * @listener: an object containing the callbacks to be removed
696 */
697 void memory_listener_unregister(MemoryListener *listener);
698
699 /**
700 * memory_global_dirty_log_start: begin dirty logging for all regions
701 */
702 void memory_global_dirty_log_start(void);
703
704 /**
705 * memory_global_dirty_log_stop: begin dirty logging for all regions
706 */
707 void memory_global_dirty_log_stop(void);
708
709 void mtree_info(fprintf_function mon_printf, void *f);
710
711 #endif
712
713 #endif