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https://gitlab.com/qemu-project/qemu
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e226939de5
This patch add some calls to xen_modified_memory to notify Xen about dirtybits during migration. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Reviewed-by: Avi Kivity <avi@redhat.com>
138 lines
4.2 KiB
C
138 lines
4.2 KiB
C
/*
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* Declarations for obsolete exec.c functions
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*
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* Copyright 2011 Red Hat, Inc. and/or its affiliates
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*
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* Authors:
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* Avi Kivity <avi@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* later. See the COPYING file in the top-level directory.
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*
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*/
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/*
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* This header is for use by exec.c and memory.c ONLY. Do not include it.
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* The functions declared here will be removed soon.
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*/
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#ifndef EXEC_OBSOLETE_H
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#define EXEC_OBSOLETE_H
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#ifndef WANT_EXEC_OBSOLETE
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#error Do not include exec-obsolete.h
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#endif
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#ifndef CONFIG_USER_ONLY
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#include "hw/xen.h"
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ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
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MemoryRegion *mr);
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ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
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void qemu_ram_free(ram_addr_t addr);
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void qemu_ram_free_from_ptr(ram_addr_t addr);
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struct MemoryRegion;
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struct MemoryRegionSection;
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void cpu_register_physical_memory_log(struct MemoryRegionSection *section,
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bool readonly);
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void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
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void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);
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int cpu_physical_memory_set_dirty_tracking(int enable);
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#define VGA_DIRTY_FLAG 0x01
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#define CODE_DIRTY_FLAG 0x02
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#define MIGRATION_DIRTY_FLAG 0x08
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static inline int cpu_physical_memory_get_dirty_flags(ram_addr_t addr)
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{
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return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS];
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}
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/* read dirty bit (return 0 or 1) */
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static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
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{
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return cpu_physical_memory_get_dirty_flags(addr) == 0xff;
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}
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static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
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ram_addr_t length,
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int dirty_flags)
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{
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int ret = 0;
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ram_addr_t addr, end;
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end = TARGET_PAGE_ALIGN(start + length);
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start &= TARGET_PAGE_MASK;
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for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
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ret |= cpu_physical_memory_get_dirty_flags(addr) & dirty_flags;
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}
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return ret;
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}
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static inline int cpu_physical_memory_set_dirty_flags(ram_addr_t addr,
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int dirty_flags)
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{
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if ((dirty_flags & MIGRATION_DIRTY_FLAG) &&
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!cpu_physical_memory_get_dirty(addr, TARGET_PAGE_SIZE,
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MIGRATION_DIRTY_FLAG)) {
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ram_list.dirty_pages++;
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}
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return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= dirty_flags;
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}
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static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)
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{
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cpu_physical_memory_set_dirty_flags(addr, 0xff);
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}
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static inline int cpu_physical_memory_clear_dirty_flags(ram_addr_t addr,
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int dirty_flags)
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{
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int mask = ~dirty_flags;
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if ((dirty_flags & MIGRATION_DIRTY_FLAG) &&
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cpu_physical_memory_get_dirty(addr, TARGET_PAGE_SIZE,
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MIGRATION_DIRTY_FLAG)) {
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ram_list.dirty_pages--;
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}
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return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] &= mask;
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}
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static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
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ram_addr_t length,
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int dirty_flags)
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{
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ram_addr_t addr, end;
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end = TARGET_PAGE_ALIGN(start + length);
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start &= TARGET_PAGE_MASK;
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for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
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cpu_physical_memory_set_dirty_flags(addr, dirty_flags);
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}
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xen_modified_memory(addr, length);
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}
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static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,
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ram_addr_t length,
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int dirty_flags)
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{
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ram_addr_t addr, end;
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end = TARGET_PAGE_ALIGN(start + length);
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start &= TARGET_PAGE_MASK;
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for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
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cpu_physical_memory_clear_dirty_flags(addr, dirty_flags);
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}
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}
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void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
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int dirty_flags);
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extern const IORangeOps memory_region_iorange_ops;
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#endif
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#endif
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