There were some issues in i915 preventing rmfb from working correctly. A lot of them are related to hw readout, some others due to keeping crtc active during driver unload:
https://intel-gfx-ci.01.org/CI/Trybot_394/
I fixed the POWER_DOMAIN_AUDIO issue because it was easy to do so, but ignored the other failures by disabling all crtc's during driver unload.
Daniel Vetter (1): drm: Resurrect atomic rmfb code, v2
Maarten Lankhorst (3): drm/atomic: Delete wrong comment. drm/i915: Fix POWER_DOMAIN_AUDIO refcounting. drm/i915: Disable all crtcs during driver unload.
drivers/gpu/drm/drm_atomic.c | 68 +++++++++++++++++++++++++++++++++--- drivers/gpu/drm/drm_crtc_internal.h | 1 + drivers/gpu/drm/drm_framebuffer.c | 7 ++++ drivers/gpu/drm/i915/i915_drv.c | 5 +++ drivers/gpu/drm/i915/intel_ddi.c | 14 ++------ drivers/gpu/drm/i915/intel_display.c | 4 +++ drivers/gpu/drm/i915/intel_dp_mst.c | 9 ++--- 7 files changed, 85 insertions(+), 23 deletions(-)