linux-kernel - Re: [PATCH v4 00/16] iommu: Permit modular builds of ARM SMMU[v3] drivers

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Date:   Mon, 6 Jan 2020 10:48:54 +0000
From:   Will Deacon <will@...nel.org>
To:     Joerg Roedel <joro@...tes.org>
Cc:     linux-kernel@...r.kernel.org, iommu@...ts.linuxfoundation.org,
        kernel-team@...roid.com,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        John Garry <john.garry@...wei.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Saravana Kannan <saravanak@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Isaac J. Manjarres" <isaacm@...eaurora.org>,
        Robin Murphy <robin.murphy@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Ard Biesheuvel <ardb@...nel.org>
Subject: Re: [PATCH v4 00/16] iommu: Permit modular builds of ARM SMMU[v3]
 drivers

On Fri, Dec 20, 2019 at 05:13:13PM +0100, Joerg Roedel wrote:
> On Thu, Dec 19, 2019 at 12:03:36PM +0000, Will Deacon wrote:
> > Ard Biesheuvel (1):
> >   iommu/arm-smmu: Support SMMU module probing from the IORT
> > 
> > Greg Kroah-Hartman (1):
> >   PCI/ATS: Restore EXPORT_SYMBOL_GPL() for pci_{enable,disable}_ats()
> > 
> > Will Deacon (14):
> >   drivers/iommu: Export core IOMMU API symbols to permit modular drivers
> >   iommu/of: Request ACS from the PCI core when configuring IOMMU linkage
> >   PCI: Export pci_ats_disabled() as a GPL symbol to modules
> >   drivers/iommu: Take a ref to the IOMMU driver prior to ->add_device()
> >   iommu/of: Take a ref to the IOMMU driver during ->of_xlate()
> >   drivers/iommu: Allow IOMMU bus ops to be unregistered
> >   Revert "iommu/arm-smmu: Make arm-smmu-v3 explicitly non-modular"
> >   Revert "iommu/arm-smmu: Make arm-smmu explicitly non-modular"
> >   iommu/arm-smmu: Prevent forced unbinding of Arm SMMU drivers
> >   iommu/arm-smmu-v3: Unregister IOMMU and bus ops on device removal
> >   iommu/arm-smmu-v3: Allow building as a module
> >   iommu/arm-smmu: Unregister IOMMU and bus ops on device removal
> >   iommu/arm-smmu: Allow building as a module
> >   iommu/arm-smmu: Update my email address in MODULE_AUTHOR()
> > 
> >  drivers/acpi/arm64/iort.c   |   4 +-
> >  drivers/iommu/Kconfig       |  16 ++++-
> >  drivers/iommu/Makefile      |   3 +-
> >  drivers/iommu/arm-smmu-v3.c |  94 +++++++++++++++++---------
> >  drivers/iommu/arm-smmu.c    | 128 +++++++++++++++++++++++++-----------
> >  drivers/iommu/iommu-sysfs.c |   5 ++
> >  drivers/iommu/iommu.c       |  32 ++++++++-
> >  drivers/iommu/of_iommu.c    |  19 ++++--
> >  drivers/pci/ats.c           |   2 +
> >  drivers/pci/pci.c           |   1 +
> >  include/linux/iommu.h       |   4 +-
> >  11 files changed, 223 insertions(+), 85 deletions(-)
> 
> Applied, thanks.

Thanks, Joerg! I'll look into the suggestion from Greg regarding 'automatic'
setting of the module 'owner' field and send a follow-up patch if I come up
with something.

Will