845b6214a3
The memory API can now return the exact set of bitmaps that have to be tracked. Use it instead of the in_migration variable. In the next patches, we will also use it to set only DIRTY_MEMORY_VGA or DIRTY_MEMORY_MIGRATION if necessary. This can make a difference for dataplane, especially after the dirty bitmap is changed to use more expensive atomic operations. Of some interest is the change to stl_phys_notdirty. When migration was introduced, stl_phys_notdirty was changed to effectively behave as stl_phys during migration. In fact, if one looks at the function as it was in the beginning (commit 8df1cd0, physical memory access functions, 2005-01-28), at the time the dirty bitmap was the equivalent of DIRTY_MEMORY_CODE nowadays; hence, the function simply should not touch the dirty code bits. This patch changes it to do the intended thing. Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org - QEMU team