On 06/16/2013 07:57 AM, Daniel Vetter wrote: > Hi all, > > So I've taken a look again at the locking mess in our fbdev support and cried. > Fixing up the console_lock mess around the fbdev notifier will be real work, > semanatically the fbdev layer does lots of stupid things (like the radeon resume > issue I've just debugged) and the panic notifier is pretty much a lost cause. > > So I've decided to instead rip it all out. It seems to work \o/ I wonder how badly this breaks on EFI systems. Currently, efifb is an fbdev driver. When i915 calls register_framebuffer, the fbdev core removes efifb's framebuffer. (This is scary already -- what if i915 has reused that memory for something else beforehand?) But now, if i915 doesn't call register_framebuffer, the efifb "framebuffer" might stick around forever. Presumably, efifb ought to become a framebuffer-only drm driver and there should be a saner way to hand control from efifb (or vesa?) to a real driver. --Andy
