drm/xe/guc: Add page reclamation interface to GuC

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Add page reclamation related changes to GuC interface, handlers, and
senders to support page reclamation.

Currently TLB invalidations will perform an entire PPC flush in order to
prevent stale memory access for noncoherent system memory. Page
reclamation is an extension of the typical TLB invalidation
workflow, allowing disabling of full PPC flush and enable selective PPC
flushing. Selective flushing will be decided by a list of pages whom's
address is passed to GuC at time of action.

Page reclamation interfaces require at least GuC FW ver 70.31.0.

v2:
 - Moved send_page_reclaim to first patch usage.
 - Add comments explaining shared done handler. (Matthew B)
 - Add FW version fallback to disable page reclaim
   on older versions. (Matthew B, Shuicheng)

Signed-off-by: Brian Nguyen <brian3.nguyen@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251212213225.3564537-16-brian3.nguyen@intel.com

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Brian Nguyen 2025-12-13 05:32:30 +08:00 • committed by Matthew Brost

parent 9b1a0e0a15

commit 77ebc7c10d

4 changed files with 24 additions and 0 deletions

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2

drivers/gpu/drm/xe/abi/guc_actions_abi.h

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4

drivers/gpu/drm/xe/xe_guc.c

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17

drivers/gpu/drm/xe/xe_guc_ct.c

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1

drivers/gpu/drm/xe/xe_guc_fwif.h

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