[v5,0/4] drm/xe/vf: Post-migration recovery of GGTT nodes and CTB

Message

Tomasz Lis March 28, 2025, 6:11 p.m. UTC

To support VF Migration, it is necessary to do fixups to any
non-virtualized resources. These fixups need to be applied within
VM, on the KMD working with VF.

This series adds two fixup functions to the recovery worker:
* for fixing drm_mm nodes which represent GGTT allocations
* for fixing content of outgoing CTB buffer

v2: Fixed missing include, made checkpatch happy
v3: Moved some functs to xe_ggtt.c; moved shift computation to just
  after querying; improved documentation; switched some warns to asserts;
  skipping fixups when GGTT shift eq 0; iterating through tiles rather
  than gts; fixes in log messages
v4: Updated kerneldocs, removed unused funct, properly allocate
  balloning nodes if non existent, removed inline keywords, enums for
  offsets in CTB messages, less error messages, if return unused then
  made functs void
v5: Removed drm_mm change, but added VF init modifications. These then
  allowed to re-use ballooning functions during ggtt node fixing.

Tomasz Lis (4):
  drm/xe/vf: Divide ballooning into allocation and insertion
  drm/xe/sriov: Shifting GGTT area post migration
  drm/xe/guc: Introduce enum with offsets for multi-LRC register H2G
  drm/xe/vf: Fixup CTB send buffer messages after migration

 drivers/gpu/drm/xe/abi/guc_actions_abi.h  |   7 +
 drivers/gpu/drm/xe/xe_ggtt.c              |  40 +++++-
 drivers/gpu/drm/xe/xe_ggtt.h              |   3 +
 drivers/gpu/drm/xe/xe_gt_sriov_vf.c       | 148 +++++++++++++++++++---
 drivers/gpu/drm/xe/xe_gt_sriov_vf.h       |   1 +
 drivers/gpu/drm/xe/xe_gt_sriov_vf_types.h |   2 +
 drivers/gpu/drm/xe/xe_guc_ct.c            | 142 +++++++++++++++++++++
 drivers/gpu/drm/xe/xe_guc_ct.h            |   2 +
 drivers/gpu/drm/xe/xe_guc_submit.c        |   4 +
 drivers/gpu/drm/xe/xe_sriov_vf.c          |  42 ++++++
 10 files changed, 369 insertions(+), 22 deletions(-)