99 lines
3.2 KiB
C
99 lines
3.2 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 RAM_ADDR_H
|
|
#define RAM_ADDR_H
|
|
|
|
#ifndef CONFIG_USER_ONLY
|
|
#include "hw/xen/xen.h"
|
|
|
|
ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
|
|
MemoryRegion *mr);
|
|
ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
|
|
void *qemu_get_ram_ptr(ram_addr_t addr);
|
|
void qemu_ram_free(ram_addr_t addr);
|
|
void qemu_ram_free_from_ptr(ram_addr_t addr);
|
|
|
|
static inline bool cpu_physical_memory_get_dirty(ram_addr_t start,
|
|
ram_addr_t length,
|
|
unsigned client)
|
|
{
|
|
unsigned long end, page, next;
|
|
|
|
assert(client < DIRTY_MEMORY_NUM);
|
|
|
|
end = TARGET_PAGE_ALIGN(start + length) >> TARGET_PAGE_BITS;
|
|
page = start >> TARGET_PAGE_BITS;
|
|
next = find_next_bit(ram_list.dirty_memory[client], end, page);
|
|
|
|
return next < end;
|
|
}
|
|
|
|
static inline bool cpu_physical_memory_get_dirty_flag(ram_addr_t addr,
|
|
unsigned client)
|
|
{
|
|
return cpu_physical_memory_get_dirty(addr, 1, client);
|
|
}
|
|
|
|
static inline bool cpu_physical_memory_is_clean(ram_addr_t addr)
|
|
{
|
|
bool vga = cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_VGA);
|
|
bool code = cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_CODE);
|
|
bool migration =
|
|
cpu_physical_memory_get_dirty_flag(addr, DIRTY_MEMORY_MIGRATION);
|
|
return !(vga && code && migration);
|
|
}
|
|
|
|
static inline void cpu_physical_memory_set_dirty_flag(ram_addr_t addr,
|
|
unsigned client)
|
|
{
|
|
assert(client < DIRTY_MEMORY_NUM);
|
|
set_bit(addr >> TARGET_PAGE_BITS, ram_list.dirty_memory[client]);
|
|
}
|
|
|
|
static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
|
|
ram_addr_t length)
|
|
{
|
|
unsigned long end, page;
|
|
|
|
end = TARGET_PAGE_ALIGN(start + length) >> TARGET_PAGE_BITS;
|
|
page = start >> TARGET_PAGE_BITS;
|
|
bitmap_set(ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION], page, end - page);
|
|
bitmap_set(ram_list.dirty_memory[DIRTY_MEMORY_VGA], page, end - page);
|
|
bitmap_set(ram_list.dirty_memory[DIRTY_MEMORY_CODE], page, end - page);
|
|
xen_modified_memory(start, length);
|
|
}
|
|
|
|
static inline void cpu_physical_memory_clear_dirty_range(ram_addr_t start,
|
|
ram_addr_t length,
|
|
unsigned client)
|
|
{
|
|
unsigned long end, page;
|
|
|
|
assert(client < DIRTY_MEMORY_NUM);
|
|
end = TARGET_PAGE_ALIGN(start + length) >> TARGET_PAGE_BITS;
|
|
page = start >> TARGET_PAGE_BITS;
|
|
bitmap_clear(ram_list.dirty_memory[client], page, end - page);
|
|
}
|
|
|
|
void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t length,
|
|
unsigned client);
|
|
|
|
#endif
|
|
#endif
|