linux-kernel - RE: [PATCH v4 5/5] vfio: Support IO page table replacement

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Date:   Fri, 10 Mar 2023 11:53:56 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Nicolin Chen <nicolinc@...dia.com>,
        "jgg@...dia.com" <jgg@...dia.com>,
        "joro@...tes.org" <joro@...tes.org>,
        "will@...nel.org" <will@...nel.org>,
        "robin.murphy@....com" <robin.murphy@....com>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "shuah@...nel.org" <shuah@...nel.org>
CC:     "Liu, Yi L" <yi.l.liu@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
        "mjrosato@...ux.ibm.com" <mjrosato@...ux.ibm.com>,
        "farman@...ux.ibm.com" <farman@...ux.ibm.com>
Subject: RE: [PATCH v4 5/5] vfio: Support IO page table replacement

> From: Nicolin Chen <nicolinc@...dia.com>
> Sent: Wednesday, March 8, 2023 10:26 PM
> 
> Now both the physical path and the emulated path should support an IO
> page
> table replacement.
> 
> Call iommufd_device_replace() when vdev->iommufd_attached is true.
> 

why is replace enabled only in physical path in this patch?