linux-kernel - Re: [PATCH v15 00/12] SMMUv3 Nested Stage Setup (IOMMU part)

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Message-ID: <c3fcc2fb-3173-af83-2b30-423c2c1ab83d@redhat.com>
Date:   Tue, 28 Sep 2021 08:25:33 +0200
From:   Eric Auger <eric.auger@...hat.com>
To:     Krishna Reddy <vdumpa@...dia.com>,
        "eric.auger.pro@...il.com" <eric.auger.pro@...il.com>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "kvmarm@...ts.cs.columbia.edu" <kvmarm@...ts.cs.columbia.edu>,
        "will@...nel.org" <will@...nel.org>,
        "maz@...nel.org" <maz@...nel.org>,
        "robin.murphy@....com" <robin.murphy@....com>,
        "joro@...tes.org" <joro@...tes.org>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "tn@...ihalf.com" <tn@...ihalf.com>,
        "zhukeqian1@...wei.com" <zhukeqian1@...wei.com>
Cc:     "jacob.jun.pan@...ux.intel.com" <jacob.jun.pan@...ux.intel.com>,
        "yi.l.liu@...el.com" <yi.l.liu@...el.com>,
        "wangxingang5@...wei.com" <wangxingang5@...wei.com>,
        "jean-philippe@...aro.org" <jean-philippe@...aro.org>,
        "zhangfei.gao@...aro.org" <zhangfei.gao@...aro.org>,
        "zhangfei.gao@...il.com" <zhangfei.gao@...il.com>,
        "vivek.gautam@....com" <vivek.gautam@....com>,
        "shameerali.kolothum.thodi@...wei.com" 
        <shameerali.kolothum.thodi@...wei.com>,
        "yuzenghui@...wei.com" <yuzenghui@...wei.com>,
        "nicoleotsuka@...il.com" <nicoleotsuka@...il.com>,
        "lushenming@...wei.com" <lushenming@...wei.com>,
        Vikram Sethi <vsethi@...dia.com>,
        "chenxiang66@...ilicon.com" <chenxiang66@...ilicon.com>,
        "jiangkunkun@...wei.com" <jiangkunkun@...wei.com>
Subject: Re: [PATCH v15 00/12] SMMUv3 Nested Stage Setup (IOMMU part)

Hi Krishna,

On 9/27/21 11:17 PM, Krishna Reddy wrote:
> Hi Eric,
>> This is based on Jean-Philippe's
>> [PATCH v14 00/10] iommu: I/O page faults for SMMUv3
>> https://www.spinics.net/lists/arm-kernel/msg886518.html
>> (including the patches that were not pulled for 5.13)
>>
> Jean's patches have been merged to v5.14.
> Do you anticipate IOMMU/VFIO part patches getting into upstream kernel soon?

I am going to respin the smmu part rebased on v5.15. As for the VFIO
part, this needs to be totally redesigned based on /dev/iommu (see
[RFC 00/20] Introduce /dev/iommu for userspace I/O address space
management).

I will provide some updated kernel and qemu branches for testing purpose
only.

Thanks

Eric
>
> -KR
>