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[0/6] drm/xe/xe_vm: Implement xe_vm_get_property_ioctl

Message ID 20250226225557.133076-1-jonathan.cavitt@intel.com (mailing list archive)
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Series drm/xe/xe_vm: Implement xe_vm_get_property_ioctl | expand

Message

Jonathan Cavitt Feb. 26, 2025, 10:55 p.m. UTC 
Add additional information to the xe_vm so it can report the last 50
relevant exec queues that have been banned on it, as well as the
associated pagefault address and address type that caused the ban when
applicable.  Since we cannot reasonably associate a pagefault to a
specific exec queue, whenever a CAT error causes an exec queue to become
banned, we blame the last seen pagefault on said exec queue.

The last pagefault seen per exec queue is saved to the xe_vm, and the
pagefault is updated when a new pagefault is reported or when the last
pagefault has been associated with an exec queue, whichever happens
first.  All new pagefault reports come from xe_gt_pagefault.

Also add a tracker that counts the number of times the VM has
experienced an engine reset.

Finally, add a new ioctl - xe_vm_get_property_ioctl - that allows the
user to query this additional information.

Signed-off-by: Jonathan Cavitt <joanthan.cavitt@intel.com>
Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Suggested-by: Matthew Brost <matthew.brost@intel.com>
CC: Zhang Jianxun <jianxun.zhang@intel.com>

Jonathan Cavitt (6):
  drm/xe/xe_gt_pagefault: Migrate lookup_vma to xe_vm.h
  drm/xe/xe_exec_queue: Add ID param to exec queue struct
  drm/xe/xe_gt_pagefault: Migrate pagefault struct to header
  drm/xe/xe_vm: Add per VM pagefault info
  drm/xe/xe_vm: Add per VM reset stats
  drm/xe/xe_vm: Implement xe_vm_get_property_ioctl

 drivers/gpu/drm/xe/xe_device.c           |   2 +
 drivers/gpu/drm/xe/xe_exec_queue.c       |   7 +
 drivers/gpu/drm/xe/xe_exec_queue_types.h |   2 +
 drivers/gpu/drm/xe/xe_gt_pagefault.c     |  82 ++++-------
 drivers/gpu/drm/xe/xe_gt_pagefault.h     |  28 ++++
 drivers/gpu/drm/xe/xe_guc_submit.c       |   4 +
 drivers/gpu/drm/xe/xe_vm.c               | 175 +++++++++++++++++++++++
 drivers/gpu/drm/xe/xe_vm.h               |  32 +++++
 drivers/gpu/drm/xe/xe_vm_types.h         |  34 +++++
 include/uapi/drm/xe_drm.h                |  73 ++++++++++
 10 files changed, 381 insertions(+), 58 deletions(-)