From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Thu, 19 Apr 2018 13:58:42 +0200
Subject: drm/amdgpu: kmap PDs/PTs in amdgpu_vm_update_directories
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Git-commit: a7f91061c60ad9cac2e6a03b642be6a4f88b3662
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

In theory it is possible that PDs/PTs can move without eviction.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c |   15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -242,13 +242,6 @@ int amdgpu_vm_validate_pt_bos(struct amd
 			spin_unlock(&glob->lru_lock);
 		}
 
-		if (bo->tbo.type == ttm_bo_type_kernel &&
-		    vm->use_cpu_for_update) {
-			r = amdgpu_bo_kmap(bo, NULL);
-			if (r)
-				break;
-		}
-
 		if (bo->tbo.type != ttm_bo_type_kernel) {
 			spin_lock(&vm->moved_lock);
 			list_move(&bo_base->vm_status, &vm->moved);
@@ -940,6 +933,14 @@ restart:
 	params.adev = adev;
 
 	if (vm->use_cpu_for_update) {
+		struct amdgpu_vm_bo_base *bo_base;
+
+		list_for_each_entry(bo_base, &vm->relocated, vm_status) {
+			r = amdgpu_bo_kmap(bo_base->bo, NULL);
+			if (unlikely(r))
+				return r;
+		}
+
 		r = amdgpu_vm_wait_pd(adev, vm, AMDGPU_FENCE_OWNER_VM);
 		if (unlikely(r))
 			return r;