Matthew Auld b5ee579fcb drm/i915/dmabuf: fix sg_table handling in map_dma_buf ...

commit f90daa975911961b65070ec72bd7dd8d448f9ef7 upstream.

We need to iterate over the original entries here for the sg_table,
pulling out the struct page for each one, to be remapped. However
currently this incorrectly iterates over the final dma mapped entries,
which is likely just one gigantic sg entry if the iommu is enabled,
leading to us only mapping the first struct page (and any physically
contiguous pages following it), even if there is potentially lots more
data to follow.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/7306
Fixes: 1286ff7397 ("i915: add dmabuf/prime buffer sharing support.")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Michael J. Ruhl <michael.j.ruhl@intel.com>
Cc: <stable@vger.kernel.org> # v3.5+
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221028155029.494736-1-matthew.auld@intel.com
(cherry picked from commit 28d52f99bbca7227008cf580c9194c9b3516968e)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-11-16 09:57:16 +01:00

..

selftests

Merge tag 'drm-misc-next-2020-09-21' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2020-09-23 09:52:24 +10:00

i915_gem_busy.c

…

i915_gem_clflush.c

drm/i915: Replace the hardcoded I915_FENCE_TIMEOUT

2020-05-09 12:57:57 +01:00

i915_gem_clflush.h

…

i915_gem_client_blt.c

drm/i915: Convert i915_gem_object/client_blt.c to use ww locking as well, v2.

2020-09-07 14:31:22 +03:00

i915_gem_client_blt.h

…

i915_gem_context_types.h

drm/i915/gem: Split the context's obj:vma lut into its own mutex

2020-07-03 10:13:13 +01:00

i915_gem_context.c

drm/i915/gem: Always test execution status on closing the context

2020-09-30 14:24:51 -04:00

i915_gem_context.h

drm/i915/sseu: Move sseu_info under gt_info

2020-07-08 21:13:09 +01:00

i915_gem_dmabuf.c

drm/i915/dmabuf: fix sg_table handling in map_dma_buf

2022-11-16 09:57:16 +01:00

i915_gem_domain.c

drm/i915/gem: Drop lru bumping on display unpinning

2021-02-10 09:29:18 +01:00

i915_gem_execbuffer.c

drm/i915: avoid uninitialised var in eb_parse()

2021-08-12 13:22:19 +02:00

i915_gem_fence.c

drm/i915: Replace the hardcoded I915_FENCE_TIMEOUT

2020-05-09 12:57:57 +01:00

i915_gem_internal.c

drm/i915/gem: Give each object class a friendly name

2020-05-29 23:38:29 +01:00

i915_gem_ioctls.h

…

i915_gem_lmem.c

drm/i915/gem: Give each object class a friendly name

2020-05-29 23:38:29 +01:00

i915_gem_lmem.h

…

i915_gem_mman.c

drm/i915/gem: add missing boundary check in vm_access

2022-04-08 14:39:58 +02:00

i915_gem_mman.h

drm/i915/gem: Only revoke mmap handlers if active

2020-07-02 20:46:08 +01:00

i915_gem_object_blt.c

drm/i915: Fix an error code i915_gem_object_copy_blt()

2020-09-30 14:24:28 -04:00

i915_gem_object_blt.h

drm/i915: Convert i915_gem_object/client_blt.c to use ww locking as well, v2.

2020-09-07 14:31:22 +03:00

i915_gem_object_types.h

drm/i915: Flush TLBs before releasing backing store

2022-01-29 10:26:10 +01:00

i915_gem_object.c

drm/i915/gem: Split the context's obj:vma lut into its own mutex

2020-07-03 10:13:13 +01:00

i915_gem_object.h

drm/i915/gem: Drop lru bumping on display unpinning

2021-02-10 09:29:18 +01:00

i915_gem_pages.c

drm/i915: Flush TLBs before releasing backing store

2022-01-29 10:26:10 +01:00

i915_gem_phys.c

drm/i915/gem: Pull phys pread/pwrite implementations to the backend

2020-11-12 19:47:30 -05:00

i915_gem_pm.c

drm/i915: Add an implementation for i915_gem_ww_ctx locking, v2.

2020-09-07 14:29:44 +03:00

i915_gem_pm.h

…

i915_gem_region.c

…

i915_gem_region.h

…

i915_gem_shmem.c

i915: use find_lock_page instead of find_lock_entry

2020-10-13 18:38:29 -07:00

i915_gem_shrinker.c

drm/i915/gem: Unpin idle contexts from kswapd reclaim

2020-07-08 22:05:49 +01:00

i915_gem_shrinker.h

…

i915_gem_stolen.c

drm/i915: Exclude low pages (128KiB) of stolen from use

2020-10-21 08:32:28 -04:00

i915_gem_stolen.h

drm/i915: Exclude low pages (128KiB) of stolen from use

2020-10-21 08:32:28 -04:00

i915_gem_throttle.c

drm/i915/gem: Remove disordered per-file request list for throttling

2020-09-07 13:13:50 +03:00

i915_gem_tiling.c

drm/i915: Add an implementation for i915_gem_ww_ctx locking, v2.

2020-09-07 14:29:44 +03:00

i915_gem_userptr.c

lib/scatterlist: Add support in dynamic allocation of SG table from pages

2020-10-05 20:45:45 -03:00

i915_gem_wait.c

…

i915_gemfs.c

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i915_gemfs.h

…