drm/xe/migrate: Allow xe_migrate_vram() also on non-pagefault capable devices

The drm_pagemap functionality does not depend on the device having
recoverable pagefaults available. So allow xe_migrate_vram() also for
such devices. Even if this will have little use in practice, it's
beneficial for testin multi-device SVM, since a memory provider could
be a non-pagefault capable gpu.

Signed-off-by: Thomas Hellström <[email protected]>
Reviewed-by: Matthew Brost <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Thomas Hellström

drivers/gpu/drm/xe/xe_migrate.c

@@ -1609,6 +1609,7 @@ static struct dma_fence *xe_migrate_vram(struct xe_migrate *m,
 {
 	struct xe_gt *gt = m->tile->primary_gt;
 	struct xe_device *xe = gt_to_xe(gt);
+	bool use_usm_batch = xe->info.has_usm;
 	struct dma_fence *fence = NULL;
 	u32 batch_size = 2;
 	u64 src_L0_ofs, dst_L0_ofs;
@@ -1625,7 +1626,7 @@ static struct dma_fence *xe_migrate_vram(struct xe_migrate *m,
 	batch_size += pte_update_cmd_size(round_update_size);
 	batch_size += EMIT_COPY_DW;
 
-	bb = xe_bb_new(gt, batch_size, true);
+	bb = xe_bb_new(gt, batch_size, use_usm_batch);
 	if (IS_ERR(bb)) {
 		err = PTR_ERR(bb);
 		return ERR_PTR(err);
@@ -1650,7 +1651,7 @@ static struct dma_fence *xe_migrate_vram(struct xe_migrate *m,
 		  XE_PAGE_SIZE);
 
 	job = xe_bb_create_migration_job(m->q, bb,
-					 xe_migrate_batch_base(m, true),
+					 xe_migrate_batch_base(m, use_usm_batch),
 					 update_idx);
 	if (IS_ERR(job)) {
 		err = PTR_ERR(job);