mirror of
https://github.com/qemu/qemu.git
synced 2024-12-17 01:03:51 +08:00
41aa4e9fd8
We need some of the fields without having to poison everything else. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/*
|
|
* Declarations for cpu physical memory functions
|
|
*
|
|
* Copyright 2011 Red Hat, Inc. and/or its affiliates
|
|
*
|
|
* Authors:
|
|
* Avi Kivity <avi@redhat.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or
|
|
* later. See the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* This header is for use by exec.c and memory.c ONLY. Do not include it.
|
|
* The functions declared here will be removed soon.
|
|
*/
|
|
|
|
#ifndef QEMU_EXEC_RAMBLOCK_H
|
|
#define QEMU_EXEC_RAMBLOCK_H
|
|
|
|
#ifndef CONFIG_USER_ONLY
|
|
#include "cpu-common.h"
|
|
|
|
struct RAMBlock {
|
|
struct rcu_head rcu;
|
|
struct MemoryRegion *mr;
|
|
uint8_t *host;
|
|
uint8_t *colo_cache; /* For colo, VM's ram cache */
|
|
ram_addr_t offset;
|
|
ram_addr_t used_length;
|
|
ram_addr_t max_length;
|
|
void (*resized)(const char*, uint64_t length, void *host);
|
|
uint32_t flags;
|
|
/* Protected by iothread lock. */
|
|
char idstr[256];
|
|
/* RCU-enabled, writes protected by the ramlist lock */
|
|
QLIST_ENTRY(RAMBlock) next;
|
|
QLIST_HEAD(, RAMBlockNotifier) ramblock_notifiers;
|
|
int fd;
|
|
size_t page_size;
|
|
/* dirty bitmap used during migration */
|
|
unsigned long *bmap;
|
|
/* bitmap of already received pages in postcopy */
|
|
unsigned long *receivedmap;
|
|
|
|
/*
|
|
* bitmap to track already cleared dirty bitmap. When the bit is
|
|
* set, it means the corresponding memory chunk needs a log-clear.
|
|
* Set this up to non-NULL to enable the capability to postpone
|
|
* and split clearing of dirty bitmap on the remote node (e.g.,
|
|
* KVM). The bitmap will be set only when doing global sync.
|
|
*
|
|
* NOTE: this bitmap is different comparing to the other bitmaps
|
|
* in that one bit can represent multiple guest pages (which is
|
|
* decided by the `clear_bmap_shift' variable below). On
|
|
* destination side, this should always be NULL, and the variable
|
|
* `clear_bmap_shift' is meaningless.
|
|
*/
|
|
unsigned long *clear_bmap;
|
|
uint8_t clear_bmap_shift;
|
|
};
|
|
#endif
|
|
#endif
|