drm/xe/guc: READ/WRITE_ONCE g2h_fence->done

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[ Upstream commit bed2a6bd20 ]

Use READ_ONCE and WRITE_ONCE when operating on g2h_fence->done
to prevent the compiler from ignoring important modifications
to its value.

Fixes: dd08ebf6c3 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251222201957.63245-5-jonathan.cavitt@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit b5179dbd1c)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Jonathan Cavitt 2025-12-22 20:19:59 +00:00 • committed by Greg Kroah-Hartman

parent 63dfbcd59b

commit d260dff568

1 changed files with 10 additions and 4 deletions

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drivers/gpu/drm/xe/xe_guc_ct.c

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