From: Matthew Brost <matthew.brost@intel.com>
Date: Thu, 13 Apr 2023 01:48:41 +0000 (-0700)
Subject: drm/xe: Ensure LR engines are not persistent
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=911cd9b3b4e1d10250987864fa19315c772edf9d;p=linux.git

drm/xe: Ensure LR engines are not persistent

With our ref counting scheme long running (LR) engines only close
properly if not persistent, ensure that LR engines are non-persistent.

v2: spell out LR

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
---

diff --git a/drivers/gpu/drm/xe/xe_engine.c b/drivers/gpu/drm/xe/xe_engine.c
index 1843e886a405b..e72a94a944d00 100644
--- a/drivers/gpu/drm/xe/xe_engine.c
+++ b/drivers/gpu/drm/xe/xe_engine.c
@@ -599,7 +599,9 @@ int xe_engine_create_ioctl(struct drm_device *dev, void *data,
 			return -ENOENT;
 
 		e = xe_engine_create(xe, vm, logical_mask,
-				     args->width, hwe, ENGINE_FLAG_PERSISTENT);
+				     args->width, hwe,
+				     xe_vm_no_dma_fences(vm) ? 0 :
+				     ENGINE_FLAG_PERSISTENT);
 		xe_vm_put(vm);
 		if (IS_ERR(e))
 			return PTR_ERR(e);