From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Wed, 24 Jan 2018 14:57:02 +0100
Subject: drm/amdgpu: fix another potential cause of VM faults
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Git-commit: d3aab672de4902ce25e9858fbb5bf67e8254b23c
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
The root PD can be evicted directly after allocating it, just validate
it on first use.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@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 | 32 ++++++++++++--------------------
1 file changed, 12 insertions(+), 20 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2262,12 +2262,12 @@ int amdgpu_vm_init(struct amdgpu_device
{
const unsigned align = min(AMDGPU_VM_PTB_ALIGN_SIZE,
AMDGPU_VM_PTE_COUNT(adev) * 8);
+ uint64_t init_pde_value = 0, flags;
unsigned ring_instance;
struct amdgpu_ring *ring;
struct drm_sched_rq *rq;
+ unsigned long size;
int r, i;
- u64 flags;
- uint64_t init_pde_value = 0;
vm->va = RB_ROOT;
for (i = 0; i < AMDGPU_MAX_VMHUBS; i++)
@@ -2318,29 +2318,21 @@ int amdgpu_vm_init(struct amdgpu_device
flags |= (AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
AMDGPU_GEM_CREATE_SHADOW);
- r = amdgpu_bo_create(adev,
- amdgpu_vm_bo_size(adev, adev->vm_manager.root_level),
- align, true,
- AMDGPU_GEM_DOMAIN_VRAM,
- flags,
- NULL, NULL, init_pde_value, &vm->root.base.bo);
+ size = amdgpu_vm_bo_size(adev, adev->vm_manager.root_level);
+ r = amdgpu_bo_create(adev, size, align, true, AMDGPU_GEM_DOMAIN_VRAM,
+ flags, NULL, NULL, init_pde_value,
+ &vm->root.base.bo);
if (r)
goto error_free_sched_entity;
+ r = amdgpu_bo_reserve(vm->root.base.bo, true);
+ if (r)
+ goto error_free_root;
+
vm->root.base.vm = vm;
list_add_tail(&vm->root.base.bo_list, &vm->root.base.bo->va);
- INIT_LIST_HEAD(&vm->root.base.vm_status);
-
- if (vm->use_cpu_for_update) {
- r = amdgpu_bo_reserve(vm->root.base.bo, false);
- if (r)
- goto error_free_root;
-
- r = amdgpu_bo_kmap(vm->root.base.bo, NULL);
- amdgpu_bo_unreserve(vm->root.base.bo);
- if (r)
- goto error_free_root;
- }
+ list_add_tail(&vm->root.base.vm_status, &vm->evicted);
+ amdgpu_bo_unreserve(vm->root.base.bo);
if (pasid) {
unsigned long flags;