mirror of https://github.com/torvalds/linux.git
9902cb999e
The EXT_external_objects extension is a bit awkward as it doesn't pass
explicit modifiers, leaving the importer to guess with incomplete
information. In the case of vk (turnip) exporting and gl (freedreno)
importing, the "OPTIMAL_TILING_EXT" layout depends on VkImageCreateInfo
flags (among other things), which the importer does not know. Which
unfortunately leaves us with the need for a metadata back-channel.
The contents of the metadata are defined by userspace. The
EXT_external_objects extension is only required to work between
compatible versions of gl and vk drivers, as defined by device and
driver UUIDs.
v2: add missing metadata kfree
v3: Rework to move copy_from/to_user out from under gem obj lock
to avoid angering lockdep about deadlocks against fs-reclaim
Signed-off-by: Rob Clark <robdclark@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/566157/
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| .. | ||
| amdgpu_drm.h | ||
| armada_drm.h | ||
| drm.h | ||
| drm_fourcc.h | ||
| drm_mode.h | ||
| drm_sarea.h | ||
| etnaviv_drm.h | ||
| exynos_drm.h | ||
| habanalabs_accel.h | ||
| i915_drm.h | ||
| ivpu_accel.h | ||
| lima_drm.h | ||
| msm_drm.h | ||
| nouveau_drm.h | ||
| omap_drm.h | ||
| panfrost_drm.h | ||
| qaic_accel.h | ||
| qxl_drm.h | ||
| radeon_drm.h | ||
| tegra_drm.h | ||
| v3d_drm.h | ||
| vc4_drm.h | ||
| vgem_drm.h | ||
| virtgpu_drm.h | ||
| vmwgfx_drm.h | ||