linux-kernel - Re: [PATCH v2 0/6] IOMMUFD: Deliver IO page faults to user space

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Message-ID: <8d29c6fb-0928-4c11-a9af-02647597cb4e@linux.intel.com>
Date:   Fri, 8 Dec 2023 13:10:17 +0800
From:   Baolu Lu <baolu.lu@...ux.intel.com>
To:     Joel Granados <j.granados@...sung.com>
Cc:     baolu.lu@...ux.intel.com, Jason Gunthorpe <jgg@...pe.ca>,
        Kevin Tian <kevin.tian@...el.com>,
        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>,
        Yi Liu <yi.l.liu@...el.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        iommu@...ts.linux.dev, linux-kselftest@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/6] IOMMUFD: Deliver IO page faults to user space

On 12/4/23 11:07 PM, Joel Granados wrote:
> On Thu, Oct 26, 2023 at 10:49:24AM +0800, Lu Baolu wrote:
>> Hi folks,
>>
>> This series implements the functionality of delivering IO page faults to
>> user space through the IOMMUFD framework for nested translation. Nested
> Does this mean the IOPF_CAPABLE HWPT needs to be parented by a HWPT
> created with IOMMU_HWPT_ALLOC_NEST_PARENT set?

No. It's generic, nested translation is simply a use case that is
currently feasible.

Best regards,
baolu