drm: Fix missing bounds checks in dma buf mmap.

drm: Teach dmabuf to handle lseek.

Needed by libdrm_amdgpu.

Based on patch from Jeff Frasca -- thanks!

XXX pullup-10

drm: Convert membar_enter/exit stragglers to membar_acquire/release.

drm: Fix membars around dma_buf_put reference count release.

amdgpu: amdgpu_dma_buf.c

drm: Omit half-baked dma_buf_file indirection.

drm: Note NetBSD->Linux errno conversion.

drm: Another pass over i915 and some supporting logic.

This makes a shim around sg_table, which essentially represents two
things:

1. an array of pages (roughly corresponding to bus_dma_segment_t[]

drm: Another pass over i915 and some supporting logic.

This makes a shim around sg_table, which essentially represents two
things:

1. an array of pages (roughly corresponding to bus_dma_segment_t[])
2. an array of DMA addresses stored in a bus_dmamap_t

Both parts are optional; different parts of i915 use sg_tables to
pass around one or both of the two parts. This helps to reduce the
ifdefs by quite a bit, although it's not always clear which part of
an sg_table any particular interface is actually using which is why I
was reluctant to do this before.

show more ...

Rename reservation_object -> dma_resv.

Update dma-buf API enough to compile drm_prime.c.

No need for <linux/fence.h> in linux_dma_buf.c.

correct error handling.

from Ilja Van Sprundel, thanks.

dma_buf_fd(): fd_putfile() does not belong here

PR kern/53834 ok riastradh@

Implement poll for reservations and dma bufs.

Simplify. Destroy the mutex too.

Return the fd we just allocated.

Draft support for drm prime.