[PATCH] drm/amdgpu: Raise dma resv usage for created TLB fence

[Dejan Andjelkovic]

When using SDMA for PT updates, a TLB fence hooked to a buffer
objects dma resv object with usage declared as BOOKKEEP leaves a
chance for TLB flush to occur prematurely. This will lead to a page
fault. Raising the usage from BOOKKEEP to KERNEL removes this
possibility.

Signed-off-by: Dejan Andjelkovic <Dejan.Andjelkovic at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index f93804902fd3..8efc2cf9bbb0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -928,7 +928,7 @@ amdgpu_vm_tlb_flush(struct amdgpu_vm_update_params *params,
 
 		/* Makes sure no PD/PT is freed before the flush */
 		dma_resv_add_fence(vm->root.bo->tbo.base.resv, *fence,
-				   DMA_RESV_USAGE_BOOKKEEP);
+				   DMA_RESV_USAGE_KERNEL);
 	}
 }
 
-- 
2.43.0