RE: [PATCH v2 06/12] iommu: Make dev->fault_param static

From: Tian, Kevin
Date: Thu Aug 03 2023 - 04:16:55 EST


> From: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> Sent: Thursday, July 27, 2023 1:49 PM
>
> @@ -4630,7 +4621,6 @@ static int intel_iommu_disable_iopf(struct device
> *dev)
> * fault handler and removing device from iopf queue should never
> * fail.
> */
> - WARN_ON(iommu_unregister_device_fault_handler(dev));
> WARN_ON(iopf_queue_remove_device(iommu->iopf_queue, dev));

the comment should be updated too.

>
> mutex_init(&param->lock);
> + param->fault_param = kzalloc(sizeof(*param->fault_param),
> GFP_KERNEL);
> + if (!param->fault_param) {
> + kfree(param);
> + return -ENOMEM;
> + }
> + mutex_init(&param->fault_param->lock);
> + INIT_LIST_HEAD(&param->fault_param->faults);

let's also move 'partial' from struct iopf_device_param into struct
iommu_fault_param. That logic is not specific to sva.

meanwhile probably iopf_device_param can be renamed to
iopf_sva_param since all the remaining fields are only used by
the sva handler.

current naming (iommu_fault_param vs. iopf_device_param) is a
bit confusing when reading related code.