Hey folks,

I'm using a virtual framebuffer on some embedded hardware, and I'm trying to keep track of all changes to the framebuffer. I know when the three biggies, cfb_imageblit, cfb_fillrect, and cfb_copyarea write to it, but there's somebody else out there monkeying with it. These mystery writes happen during scrolling, which makes me think its somebody in fbcon. And I know its nothing from userspace, because this is happening during boot before we ever get to userspace. There any docs on this? Is somebody in fbcon writing to my framebuffer behind my back?

Much thanks,
Nathan