linux-kernel - RE: [PATCH v3 5/8] iommufd: Associate fault object with iommufd_hw

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Message-ID: <BN9PR11MB5276C0BA42924298B650A5C28C452@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Wed, 7 Feb 2024 08:14:45 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: Lu Baolu <baolu.lu@...ux.intel.com>, Jason Gunthorpe <jgg@...pe.ca>, Joerg
 Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>, Robin Murphy
	<robin.murphy@....com>, Jean-Philippe Brucker <jean-philippe@...aro.org>,
	Nicolin Chen <nicolinc@...dia.com>, "Liu, Yi L" <yi.l.liu@...el.com>, "Jacob
 Pan" <jacob.jun.pan@...ux.intel.com>, Joel Granados <j.granados@...sung.com>
CC: "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
	"virtualization@...ts.linux-foundation.org"
	<virtualization@...ts.linux-foundation.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3 5/8] iommufd: Associate fault object with
 iommufd_hw_pgtable

> From: Lu Baolu <baolu.lu@...ux.intel.com>
> Sent: Monday, January 22, 2024 3:39 PM
> 
> +
> +int iommufd_fault_iopf_handler(struct iopf_group *group)
> +{
> +	struct iommufd_hw_pagetable *hwpt = group->cookie->domain-
> >fault_data;
> +	struct iommufd_fault *fault = hwpt->fault;
> +

why not directly using iommufd_fault as the fault_data?