Incorporated some of the feedback given to Adam's original patch.
My intention is to use this to do some dmabuf work/testing with i915 since it seemed too difficult to get some of Dave Airlie's stuff working, and I really don't feel like learning anything about nouveau if I can avoid it. (though I plan to do that later as well).
I think what's missing is a shrinker, left in size for mmap (didn't see anyone respond to Daniel Vetter's comment), munmap/remap probably won't work, do quite a bit more testing; that's all I can think of at the moment.
The most basic of tests for this are here: git://people.freedesktop.org/~bwidawsk/vgem-gpu-tools master
I've also pushed this repo here: git://people.freedesktop.org/~bwidawsk/drm-intel vgem
Adam Jackson (1): drm/vgem: virtual GEM provider
Ben Widawsky (4): drm/vgem: fops should be separate and constified drm/vgem: Add a drm_vgem_gem_object drm/vgem: getparam ioctl drm/vgem: properly implement mmap
drivers/gpu/drm/Kconfig | 8 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/vgem/Makefile | 4 + drivers/gpu/drm/vgem/vgem_drv.c | 377 +++++++++++++++++++++++++++++++++++++++ include/drm/vgem_drm.h | 62 +++++++ 5 files changed, 452 insertions(+), 0 deletions(-) create mode 100644 drivers/gpu/drm/vgem/Makefile create mode 100644 drivers/gpu/drm/vgem/vgem_drv.c create mode 100644 include/drm/vgem_drm.h