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Date:   Fri, 11 Feb 2022 14:00:24 -0800
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To:     Fenghua Yu <fenghua.yu@intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Peter Zijlstra <peterz@infradead.org>,
        Andy Lutomirski <luto@kernel.org>,
        Tony Luck <tony.luck@intel.com>,
        Lu Baolu <baolu.lu@linux.intel.com>,
        Joerg Roedel <joro@8bytes.org>,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        Jacob Pan <jacob.jun.pan@linux.intel.com>,
        Ashok Raj <ashok.raj@intel.com>,
        Ravi V Shankar <ravi.v.shankar@intel.com>
Cc:     iommu@lists.linux-foundation.org, x86 <x86@kernel.org>,
        linux-kernel <linux-kernel@vger.kernel.org>
References: <20220207230254.3342514-1-fenghua.yu@intel.com>
 <20220207230254.3342514-6-fenghua.yu@intel.com>
From:   Dave Hansen <dave.hansen@intel.com>
Subject: Re: [PATCH v4 05/11] iommu/sva: Assign a PASID to mm on PASID
 allocation and free it on mm exit
In-Reply-To: <20220207230254.3342514-6-fenghua.yu@intel.com>
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On 2/7/22 15:02, Fenghua Yu wrote:
...
> Get rid of the refcounting mechanisms and replace/rename the interfaces
> to reflect this new approach.
...
>  .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c   |  5 +--
>  drivers/iommu/intel/iommu.c                   |  4 +-
>  drivers/iommu/intel/svm.c                     |  9 -----
>  drivers/iommu/ioasid.c                        | 39 ++-----------------
>  drivers/iommu/iommu-sva-lib.c                 | 39 ++++++-------------
>  drivers/iommu/iommu-sva-lib.h                 |  1 -
>  include/linux/ioasid.h                        | 12 +-----
>  include/linux/sched/mm.h                      | 16 ++++++++
>  kernel/fork.c                                 |  1 +
>  9 files changed, 38 insertions(+), 88 deletions(-)

Given the heavily non-x86 diffstat here, I was hoping to see some acks
from folks that this might affect, especially on the ARM side.

Is everyone OK with this?