1 /* 2 * QEMU physical memory interfaces (target independent). 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * SPDX-License-Identifier: GPL-2.0-or-later 7 */ 8 #ifndef QEMU_SYSTEM_PHYSMEM_H 9 #define QEMU_SYSTEM_PHYSMEM_H 10 11 #include "exec/hwaddr.h" 12 #include "exec/ramlist.h" 13 14 #define DIRTY_CLIENTS_ALL ((1 << DIRTY_MEMORY_NUM) - 1) 15 #define DIRTY_CLIENTS_NOCODE (DIRTY_CLIENTS_ALL & ~(1 << DIRTY_MEMORY_CODE)) 16 17 bool physical_memory_get_dirty_flag(ram_addr_t addr, unsigned client); 18 19 bool physical_memory_is_clean(ram_addr_t addr); 20 21 uint8_t physical_memory_range_includes_clean(ram_addr_t start, 22 ram_addr_t length, 23 uint8_t mask); 24 25 void physical_memory_set_dirty_flag(ram_addr_t addr, unsigned client); 26 27 void physical_memory_set_dirty_range(ram_addr_t start, ram_addr_t length, 28 uint8_t mask); 29 30 /* 31 * Contrary to physical_memory_sync_dirty_bitmap() this function returns 32 * the number of dirty pages in @bitmap passed as argument. On the other hand, 33 * physical_memory_sync_dirty_bitmap() returns newly dirtied pages that 34 * weren't set in the global migration bitmap. 35 */ 36 uint64_t physical_memory_set_dirty_lebitmap(unsigned long *bitmap, 37 ram_addr_t start, 38 ram_addr_t pages); 39 40 void physical_memory_dirty_bits_cleared(ram_addr_t start, ram_addr_t length); 41 42 bool physical_memory_test_and_clear_dirty(ram_addr_t start, 43 ram_addr_t length, 44 unsigned client); 45 46 DirtyBitmapSnapshot * 47 physical_memory_snapshot_and_clear_dirty(MemoryRegion *mr, hwaddr offset, 48 hwaddr length, unsigned client); 49 50 bool physical_memory_snapshot_get_dirty(DirtyBitmapSnapshot *snap, 51 ram_addr_t start, 52 ram_addr_t length); 53 54 #endif 55