Udl's GEM implementation is mostly SHMEM and we should attempt to replace it with the latter. Patches #1 and #2 update udl to simplify the conversion. In patch #3 the udl code is being replaced by SHMEM. The GEM object's mmap() and free_object() functions are wrappers around their SHMEM counterparts. For mmap() we fix-up the page-caching flags to distinguish between write-combined and cached access. For free(), we have to unmap the buffer's mapping that has been established by udl's fbdev code. The patchset has been tested by running the fbdev console, X11 and Weston on a DisplayLink adapter. Thomas Zimmermann (3): drm/udl: Remove flags field from struct udl_gem_object drm/udl: Allocate GEM object via struct drm_driver.gem_create_object drm/udl: Switch to SHMEM drivers/gpu/drm/udl/Kconfig | 1 + drivers/gpu/drm/udl/Makefile | 2 +- drivers/gpu/drm/udl/udl_dmabuf.c | 255 ------------------------------- drivers/gpu/drm/udl/udl_drv.c | 30 +--- drivers/gpu/drm/udl/udl_drv.h | 36 +---- drivers/gpu/drm/udl/udl_fb.c | 65 ++++---- drivers/gpu/drm/udl/udl_gem.c | 245 ++++++----------------------- 7 files changed, 93 insertions(+), 541 deletions(-) delete mode 100644 drivers/gpu/drm/udl/udl_dmabuf.c -- 2.23.0 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
