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memory: introduce memory_region_test_and_clear_dirty

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This function avoids having to do two calls, one to test the dirty bit, and
other to reset it.

Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Juan Quintela 2012-10-17 20:24:28 +02:00
parent 5f718a15d0
commit 6c279db8ee
2 changed files with 32 additions and 0 deletions
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16
memory.c
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@ -1081,6 +1081,22 @@ void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
return cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size, -1);
}
bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr,
hwaddr size, unsigned client)
{
bool ret;
assert(mr->terminates);
ret = cpu_physical_memory_get_dirty(mr->ram_addr + addr, size,
1 << client);
if (ret) {
cpu_physical_memory_reset_dirty(mr->ram_addr + addr,
mr->ram_addr + addr + size,
1 << client);
}
return ret;
}
void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
{
AddressSpace *as;