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drm/gpuvm: drm_gpuvm_bo_obtain() requires lock and staged mode

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In commit 9ce4aef9a5 ("drm/gpuvm: take GEM lock inside
drm_gpuvm_bo_obtain_prealloc()") we update
drm_gpuvm_bo_obtain_prealloc() to take locks internally, which means
that it's only usable in immediate mode.

In this commit, we notice that drm_gpuvm_bo_obtain() requires you to use
staged mode. This means that we now have one variant of obtain for each
mode you might use gpuvm in.

To reflect this information, we add a warning about using it in
immediate mode, and to make the distinction clearer we rename the method
with a _locked() suffix so that it's clear that it requires the caller
to take the locks.

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260108-gpuvm-rust-v2-2-dbd014005a0b@google.com
[ Slightly reword commit message to refer to commit 9ce4aef9a5
  ("drm/gpuvm: take GEM lock inside drm_gpuvm_bo_obtain_prealloc()").
  - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
This commit is contained in:
Alice Ryhl 2026-01-08 16:07:32 +00:00 • committed by Danilo Krummrich
commit 9bf4ca1e69
7 changed files with 21 additions and 11 deletions
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