c1076c3e13
The MemoryRegionSection contains enough information to access the RAM region underlying the framebuffer, and can be cached inside the display device. By doing this, the new framebuffer_update_memory_section function can enable dirty memory logging on the relevant RAM region. The function must be called whenever the stride or base of the framebuffer changes; a simple way to cover these cases is to call it on every full frame invalidation, which is a rare case. framebuffer_update_display now works entirely on a MemoryRegionSection, without going through cpu_physical_memory_map/unmap. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org - QEMU team