linux-kernel - RE: [PATCH v4 05/10] iommu: Merge iopf_device_param into iommu_fault

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Date:   Fri, 25 Aug 2023 08:00:38 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>,
        "Will Deacon" <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        "Jason Gunthorpe" <jgg@...pe.ca>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Nicolin Chen <nicolinc@...dia.com>
CC:     "Liu, Yi L" <yi.l.liu@...el.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Jason Gunthorpe" <jgg@...dia.com>
Subject: RE: [PATCH v4 05/10] iommu: Merge iopf_device_param into
 iommu_fault_param

> From: Lu Baolu <baolu.lu@...ux.intel.com>
> Sent: Friday, August 25, 2023 10:30 AM
>
> @@ -468,21 +469,31 @@ struct iommu_fault_event {
>   * struct iommu_fault_param - per-device IOMMU fault data
>   * @handler: Callback function to handle IOMMU faults at device level
>   * @data: handler private data
> - * @faults: holds the pending faults which needs response
>   * @lock: protect pending faults list
> + * @dev: the device that owns this param
> + * @queue: IOPF queue
> + * @queue_list: index into queue->devices
> + * @partial: faults that are part of a Page Request Group for which the last
> + *           request hasn't been submitted yet.

could clarify that it's protected by dev_iommu lock.

Reviewed-by: Kevin Tian <kevin.tian@...el.com>