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[v3,0/6] drm/xe/xe_vm: Implement xe_vm_get_property_ioctl

Message ID 20250228182122.77475-1-jonathan.cavitt@intel.com (mailing list archive)
Headers show
Series drm/xe/xe_vm: Implement xe_vm_get_property_ioctl | expand

Message

Jonathan Cavitt Feb. 28, 2025, 6:21 p.m. UTC 
Add additional information to each VM so they can report up to the last
50 seen pagefaults.  Only failed pagefaults are saved this way, as
successful pagefaults should recover and not need to be reported to
userspace.

Additionally, add a new ioctl - xe_vm_get_property_ioctl - that allows the
user to query these pagefaults

v2: (Matt Brost)
- Break full ban list request into a separate property.
- Reformat drm_xe_vm_get_property struct.
- Remove need for drm_xe_faults helper struct.
- Separate data pointer and scalar return value in ioctl.
- Get address type on pagefault report and save it to the pagefault.
- Correctly reject writes to read-only VMAs.
- Miscellaneous formatting fixes.

v3: (Matt Brost)
- Only allow querying of failed pagefaults

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: Disallow writes to read-only VMAs
  drm/xe/xe_gt_pagefault: Migrate pagefault struct to header
  drm/xe/xe_vm: Add per VM pagefault info
  drm/xe/uapi: Define drm_xe_vm_get_property
  drm/xe/xe_gt_pagefault: Add address_type field to pagefaults
  drm/xe/xe_vm: Implement xe_vm_get_property_ioctl

 drivers/gpu/drm/xe/xe_device.c       |   3 +
 drivers/gpu/drm/xe/xe_gt_pagefault.c |  66 +++++++-------
 drivers/gpu/drm/xe/xe_gt_pagefault.h |  29 +++++++
 drivers/gpu/drm/xe/xe_vm.c           | 124 +++++++++++++++++++++++++++
 drivers/gpu/drm/xe/xe_vm.h           |   8 ++
 drivers/gpu/drm/xe/xe_vm_types.h     |  20 +++++
 include/uapi/drm/xe_drm.h            |  63 ++++++++++++++
 7 files changed, 279 insertions(+), 34 deletions(-)