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drm/xe: Use the drm_pagemap_util helper to get a svm pagemap owner

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Register a driver-wide owner list, provide a callback to identify
fast interconnects and use the drm_pagemap_util helper to allocate
or reuse a suitable owner struct. For now we consider pagemaps on
different tiles on the same device as having fast interconnect and
thus the same owner.

v2:
- Fix up the error onion unwind in xe_pagemap_create(). (Matt Brost)

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251219113320.183860-12-thomas.hellstrom@linux.intel.com
This commit is contained in:
Thomas Hellström
2025-12-19 12:33:07 +01:00
parent e44f47a9bf
commit 14b60874c9
5 changed files with 71 additions and 24 deletions
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2
drivers/gpu/drm/xe/xe_vm.c
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@@ -2908,7 +2908,7 @@ static int prefetch_ranges(struct xe_vm *vm, struct xe_vma_op *op)
ctx.read_only = xe_vma_read_only(vma);
ctx.devmem_possible = devmem_possible;
ctx.check_pages_threshold = devmem_possible ? SZ_64K : 0;
ctx.device_private_page_owner = xe_svm_devm_owner(vm->xe);
ctx.device_private_page_owner = xe_svm_private_page_owner(vm, !tile);
/* TODO: Threading the migration */
xa_for_each(&op->prefetch_range.range, i, svm_range) {