rust: drm: gpuvm: require Send + Sync for the driver's associated data

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DriverGpuVm permitted !Send/!Sync associated data on an abstraction whose
handles are shared and dropped across threads: obtain() runs from many
threads and the VA API performs deferred cross-thread drops. That is
unsound.

Require Send + Sync on the trait and its associated data so the GpuVm and
UniqueRefGpuVm handle impls need no per-impl bounds.

Fixes: 82b78182ea ("rust: drm: add base GPUVM immediate mode abstraction")
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://patch.msgid.link/20260611-gpuvm-sync-send-v4-1-6c7f4ab2778a@google.com
Signed-off-by: Alice Ryhl <aliceryhl@google.com>

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Sami Tolvanen 2026-06-11 22:17:21 +00:00 • committed by Alice Ryhl

parent 9a80ddbf66

commit b59ec72fec

1 changed files with 15 additions and 11 deletions

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rust/kernel/drm/gpuvm/mod.rs

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