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ram: introduce migration_bitmap_set_dirty()

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It just marks a region of memory as dirty.

Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
This commit is contained in:
Juan Quintela 2012-07-20 10:16:08 +02:00
parent 5a17077529
commit e44d26c8f3
1 changed files with 13 additions and 7 deletions
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20
arch_init.c
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@ -331,6 +331,18 @@ static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,
static RAMBlock *last_block;
static ram_addr_t last_offset;
static inline void migration_bitmap_set_dirty(MemoryRegion *mr, int length)
{
ram_addr_t addr;
for (addr = 0; addr < length; addr += TARGET_PAGE_SIZE) {
if (!memory_region_get_dirty(mr, addr, TARGET_PAGE_SIZE,
DIRTY_MEMORY_MIGRATION)) {
memory_region_set_dirty(mr, addr, TARGET_PAGE_SIZE);
}
}
}
/*
* ram_save_block: Writes a page of memory to the stream f
*
@ -493,7 +505,6 @@ static void reset_ram_globals(void)
static int ram_save_setup(QEMUFile *f, void *opaque)
{
ram_addr_t addr;
RAMBlock *block;
bytes_transferred = 0;
@ -514,12 +525,7 @@ static int ram_save_setup(QEMUFile *f, void *opaque)
/* Make sure all dirty bits are set */
QLIST_FOREACH(block, &ram_list.blocks, next) {
for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
if (!memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
DIRTY_MEMORY_MIGRATION)) {
memory_region_set_dirty(block->mr, addr, TARGET_PAGE_SIZE);
}
}
migration_bitmap_set_dirty(block->mr, block->length);
}
memory_global_dirty_log_start();