Re: [PATCH] drm/amdkfd: Fix NULL pointer error for GC 11.0.1 on mGPU

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Ping.

On 2023-01-05 14:28, Eric Huang wrote:
The point bo->kfd_bo is NULL for queue's write pointer BO
when creating queue on mGPU. To avoid using the pointer
fixes the error.

Signed-off-by: Eric Huang <jinhuieric.huang@xxxxxxx>
---
  drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c      | 2 +-
  drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 2 +-
  2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 9885735f1a30..d4c29e9edf34 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -2179,7 +2179,7 @@ int amdgpu_amdkfd_map_gtt_bo_to_gart(struct amdgpu_device *adev, struct amdgpu_b
  	}
amdgpu_amdkfd_remove_eviction_fence(
-		bo, bo->kfd_bo->process_info->eviction_fence);
+		bo, bo->vm_bo->vm->process_info->eviction_fence);
amdgpu_bo_unreserve(bo); diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index 6013f498ea1e..55c2dc48e567 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -231,7 +231,7 @@ static int add_queue_mes(struct device_queue_manager *dqm, struct queue *q,
  	queue_input.wptr_addr = (uint64_t)q->properties.write_ptr;
if (q->wptr_bo) {
-		wptr_addr_off = (uint64_t)q->properties.write_ptr - (uint64_t)q->wptr_bo->kfd_bo->va;
+		wptr_addr_off = (uint64_t)q->properties.write_ptr & (PAGE_SIZE - 1);
  		queue_input.wptr_mc_addr = ((uint64_t)q->wptr_bo->tbo.resource->start << PAGE_SHIFT) + wptr_addr_off;
  	}




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