drm/amdgpu: refine fault cache updates
Don't update the fault cache if status is 0. In the multiple fault case, subsequent faults will return a 0 status which is useless for userspace and replaces the useful fault status, so only update if status is non-0. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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@ -2753,7 +2753,12 @@ void amdgpu_vm_update_fault_cache(struct amdgpu_device *adev,
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xa_lock_irqsave(&adev->vm_manager.pasids, flags);
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xa_lock_irqsave(&adev->vm_manager.pasids, flags);
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vm = xa_load(&adev->vm_manager.pasids, pasid);
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vm = xa_load(&adev->vm_manager.pasids, pasid);
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if (vm) {
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/* Don't update the fault cache if status is 0. In the multiple
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* fault case, subsequent faults will return a 0 status which is
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* useless for userspace and replaces the useful fault status, so
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* only update if status is non-0.
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*/
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if (vm && status) {
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vm->fault_info.addr = addr;
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vm->fault_info.addr = addr;
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vm->fault_info.status = status;
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vm->fault_info.status = status;
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if (AMDGPU_IS_GFXHUB(vmhub)) {
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if (AMDGPU_IS_GFXHUB(vmhub)) {
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