linux-kernel - RE: [PATCH 08/12] iommufd/device: Report supported hwpt

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Message-ID: <DS0PR11MB7529A9B7872CED0F1A7367C8C3879@DS0PR11MB7529.namprd11.prod.outlook.com>
Date:   Thu, 23 Mar 2023 08:08:07 +0000
From:   "Liu, Yi L" <yi.l.liu@...el.com>
To:     Jason Gunthorpe <jgg@...dia.com>,
        Nicolin Chen <nicolinc@...dia.com>
CC:     Baolu Lu <baolu.lu@...ux.intel.com>,
        "joro@...tes.org" <joro@...tes.org>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "Tian, Kevin" <kevin.tian@...el.com>,
        "robin.murphy@....com" <robin.murphy@....com>,
        "cohuck@...hat.com" <cohuck@...hat.com>,
        "eric.auger@...hat.com" <eric.auger@...hat.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "mjrosato@...ux.ibm.com" <mjrosato@...ux.ibm.com>,
        "chao.p.peng@...ux.intel.com" <chao.p.peng@...ux.intel.com>,
        "yi.y.sun@...ux.intel.com" <yi.y.sun@...ux.intel.com>,
        "peterx@...hat.com" <peterx@...hat.com>,
        "jasowang@...hat.com" <jasowang@...hat.com>,
        "shameerali.kolothum.thodi@...wei.com" 
        <shameerali.kolothum.thodi@...wei.com>,
        "lulu@...hat.com" <lulu@...hat.com>,
        "suravee.suthikulpanit@....com" <suravee.suthikulpanit@....com>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>
Subject: RE: [PATCH 08/12] iommufd/device: Report supported hwpt_types

> From: Jason Gunthorpe <jgg@...dia.com>
> Sent: Saturday, March 11, 2023 1:53 AM
> 
> On Thu, Mar 09, 2023 at 11:45:05PM -0800, Nicolin Chen wrote:
> 
> > Yea, that's what I thought too. Yet, I am wondering a bit if
> > it'd be better to have an ops->hwpt_type in the drivers, v.s.
> > maintaining a potentially big chunk of the array here.
> 
> It probably is, some ops->iommufd_data.XX is not a bad idea

Will try. 

Regards,
Yi Liu