On 14/03/2017 18:34, BALATON Zoltan wrote:
> Like from the display controller models that use
> memory_region_get_dirty() to check if the frambuffer needs to be
> updated? But all display adaptors seem to do this and the problem was
> only seem on ppc so it may be related to something ppc specific.
You need to use test_and_clear_dirty instead of get_dirty/reset_dirty.
Or alternatively you need to reset immediately after get_dirty. At
least cg3.c is doing
read dirty bitmap
read VRAM
clear dirty bitmap
which has a race.
Paolo
