linux-kernel - Re: [PATCH v2 11/12] iommu: Separate SVA and IOPF in Makefile and Kconfig

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Date:   Thu, 10 Aug 2023 16:09:03 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Lu Baolu <baolu.lu@...ux.intel.com>
Cc:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Kevin Tian <kevin.tian@...el.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, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 11/12] iommu: Separate SVA and IOPF in Makefile and
 Kconfig

On Thu, Jul 27, 2023 at 01:48:36PM +0800, Lu Baolu wrote:
> Add CONFIG_IOMMU_IOPF for page fault handling framework and select it
> from its real consumer. Move iopf function declaration from iommu-sva.h
> to iommu.h and remove iommu-sva.h as it's empty now.
> 
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
> ---
>  include/linux/iommu.h                         | 63 +++++++++++++++
>  drivers/iommu/iommu-sva.h                     | 80 -------------------
>  .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c   |  1 -
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c   |  1 -
>  drivers/iommu/intel/iommu.c                   |  1 -
>  drivers/iommu/intel/svm.c                     |  1 -
>  drivers/iommu/iommu-sva.c                     |  3 +-
>  drivers/iommu/iommu.c                         |  2 -
>  drivers/iommu/Kconfig                         |  4 +
>  drivers/iommu/Makefile                        |  3 +-
>  drivers/iommu/intel/Kconfig                   |  1 +
>  11 files changed, 71 insertions(+), 89 deletions(-)
>  delete mode 100644 drivers/iommu/iommu-sva.h

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

At some point it would be a nice touch to split iommu.h into the
consumer and iommu driver interfaces

Jason