drm/xe: Invalidate userptr VMA on page pin fault

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Rather than return an error to the user or ban the VM when userptr VMA
page pin fails with -EFAULT, invalidate VMA mappings. This supports the
UMD use case of freeing userptr while still having bindings.

Now that non-faulting VMs can invalidate VMAs, drop the usm prefix for
the tile_invalidated member.

v2:
 - Fix build error (CI)
v3:
 - Don't invalidate VMA if in fault mode, rather kill VM (Thomas)
 - Update commit message with tile_invalidated name chagne (Thomas)
 - Wait VM bookkeep slots with VM resv lock (Thomas)
v4:
 - Move list_del_init(&userptr.repin_link) after error check (Thomas)
 - Assert not in fault mode (Matthew)

Fixes: dd08ebf6c3 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240312183907.933835-1-matthew.brost@intel.com

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This commit is contained in:

Matthew Brost 2024-03-12 11:39:07 -07:00

parent 8e61e3192a

commit 521db22a1d

4 changed files with 29 additions and 16 deletions

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4

drivers/gpu/drm/xe/xe_gt_pagefault.c

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2

drivers/gpu/drm/xe/xe_trace.h

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32

drivers/gpu/drm/xe/xe_vm.c

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7

drivers/gpu/drm/xe/xe_vm_types.h

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