From: Matthew Brost Date: Fri, 21 Jul 2023 19:16:13 +0000 (-0700) Subject: drm/xe: Use migrate engine for page fault binds X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7ead33156483f5e7a699002f2480757aaa34ab08;p=linux.git drm/xe: Use migrate engine for page fault binds We must use migrate engine for page fault binds in order to avoid a deadlock as the migrate engine has a reserved BCS instance which cannot be stuck on a fault. To use the migrate engine the engine argument to xe_migrate_update_pgtables must be NULL, this was incorrectly wired up so vm->eng[tile_id] was always being used. Fix this. Reviewed-by: Rodrigo Vivi Signed-off-by: Matthew Brost Signed-off-by: Rodrigo Vivi --- diff --git a/drivers/gpu/drm/xe/xe_pt.c b/drivers/gpu/drm/xe/xe_pt.c index b67144768af05..d2df519100108 100644 --- a/drivers/gpu/drm/xe/xe_pt.c +++ b/drivers/gpu/drm/xe/xe_pt.c @@ -1421,8 +1421,7 @@ __xe_pt_bind_vma(struct xe_tile *tile, struct xe_vma *vma, struct xe_engine *e, } fence = xe_migrate_update_pgtables(tile->migrate, - vm, xe_vma_bo(vma), - e ? e : vm->eng[tile->id], + vm, xe_vma_bo(vma), e, entries, num_entries, syncs, num_syncs, &bind_pt_update.base); diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index a07dc4f846b1b..f3f6f01046a94 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -1675,7 +1675,8 @@ xe_vm_bind_vma(struct xe_vma *vma, struct xe_engine *e, if (!(vma->tile_mask & BIT(id))) goto next; - fence = __xe_pt_bind_vma(tile, vma, e, first_op ? syncs : NULL, + fence = __xe_pt_bind_vma(tile, vma, e ? e : vm->eng[id], + first_op ? syncs : NULL, first_op ? num_syncs : 0, vma->tile_present & BIT(id)); if (IS_ERR(fence)) {