drm/xe: Add cpu_caching to properties line in VM snapshot capture

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Add CPU caching to properties line in VM snapshot capture indicating
the BO caching properites. This is useful information for debug and
will help build a robust GPU hang replay tool.

The current format is:

[<vma address>]: <permissions>|<type>|mem_region=0x%x|pat_index=%d|cpu_caching=%d

Permissions has two options, either "read_only" or "read_write".

Type has three options, either "userptr", "null_sparse", or "bo".

Memory region is a bit mask of where the memory is located.

Pat index corresponds to the value setup upon VM bind.

CPU caching corresponds to the value of BO setup upon creation.

v2:
 - Save off cpu_caching value rather than looking at BO (Carlos)
v4:
 - Fix NULL ptr dereference (Carlos)

Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patch.msgid.link/20251126185952.546277-6-matthew.brost@intel.com

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This commit is contained in:

Matthew Brost 2025-11-26 10:59:48 -08:00

parent 6cf5d14a0b

commit 066a1ddd85

1 changed files with 5 additions and 2 deletions

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drivers/gpu/drm/xe/xe_vm.c

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