Re: [Qemu-devel] [PATCH v2 00/13] IOMMU Groups + VFIO

[Don Dutile]

On 05/22/2012 01:04 AM, Alex Williamson wrote:
> Version 2 incorporating acks and feedback from v1.  The PCI DMA quirk
> and ACS check are reworked, sysfs iommu groups ABI Documentation
> added as well as numerous other fixes, including patches from Alexey
> Kardashevskiy towards supporting POWER usage of VFIO and IOMMU groups.
>
> This series can be found here on top of 3.4:
>
> git://github.com/awilliam/linux-vfio.git iommu-group-vfio-20120521
>
> The Qemu tree has also been updated to Qemu 1.1 and can be found here:
>
> git://github.com/awilliam/qemu-vfio.git iommu-group-vfio
>
> I'd really like to make a push to get this in for 3.5, so let's talk
> about how to do that across iommu, pci, and new driver.  Joerg, are
> you sufficiently happy with the IOMMU group concept and code?  We'll
> also need David Woodhouse buyin on the intel-iommu changes in patches
> 3&  6.  Who needs to approve VFIO as a new driver, GregKH?  Bjorn,
> I'd be happy to send the PCI changes as a series for you, but I
> wonder if it makes sense to collect acks for them if you approve and
> bundle them in with the associated code that needs them so you're
> not left with unused code.  Let me know which you prefer.  If there
> are better ways to do it, please let me know.  Thanks,
>
> Alex
>
> ---
ack to 1,2,4,6,8,10 & 11.
provided some minor feedback on 3,9,&12.
have to do final review of the big stuff, 7 & 13.
> Alex Williamson (13):
>        vfio: Add PCI device driver
>        pci: Misc pci_reg additions
>        pci: Create common pcibios_err_to_errno
>        pci: export pci_user functions for use by other drivers
>        vfio: x86 IOMMU implementation
>        vfio: Add documentation
>        vfio: VFIO core
>        iommu: Make use of DMA quirking and ACS enabled check for groups
>        pci: Add ACS validation utility
>        pci: Add PCI DMA source ID quirk
>        iommu: IOMMU groups for VT-d and AMD-Vi
>        iommu: IOMMU Groups
>        driver core: Add iommu_group tracking to struct device
>
>
>   .../ABI/testing/sysfs-kernel-iommu_groups          |   14
>   Documentation/ioctl/ioctl-number.txt               |    1
>   Documentation/vfio.txt                             |  315 ++++
>   MAINTAINERS                                        |    8
>   drivers/Kconfig                                    |    2
>   drivers/Makefile                                   |    1
>   drivers/iommu/amd_iommu.c                          |   67 +
>   drivers/iommu/intel-iommu.c                        |   87 +
>   drivers/iommu/iommu.c                              |  578 +++++++-
>   drivers/pci/access.c                               |    6
>   drivers/pci/pci.c                                  |   76 +
>   drivers/pci/pci.h                                  |    7
>   drivers/pci/quirks.c                               |   69 +
>   drivers/vfio/Kconfig                               |   16
>   drivers/vfio/Makefile                              |    3
>   drivers/vfio/pci/Kconfig                           |    8
>   drivers/vfio/pci/Makefile                          |    4
>   drivers/vfio/pci/vfio_pci.c                        |  557 +++++++
>   drivers/vfio/pci/vfio_pci_config.c                 | 1522 ++++++++++++++++++++
>   drivers/vfio/pci/vfio_pci_intrs.c                  |  724 ++++++++++
>   drivers/vfio/pci/vfio_pci_private.h                |   91 +
>   drivers/vfio/pci/vfio_pci_rdwr.c                   |  269 ++++
>   drivers/vfio/vfio.c                                | 1413 +++++++++++++++++++
>   drivers/vfio/vfio_iommu_x86.c                      |  743 ++++++++++
>   drivers/xen/xen-pciback/conf_space.c               |    6
>   include/linux/device.h                             |    2
>   include/linux/iommu.h                              |  104 +
>   include/linux/pci.h                                |   49 +
>   include/linux/pci_regs.h                           |  112 +
>   include/linux/vfio.h                               |  444 ++++++
>   30 files changed, 7182 insertions(+), 116 deletions(-)
>   create mode 100644 Documentation/ABI/testing/sysfs-kernel-iommu_groups
>   create mode 100644 Documentation/vfio.txt
>   create mode 100644 drivers/vfio/Kconfig
>   create mode 100644 drivers/vfio/Makefile
>   create mode 100644 drivers/vfio/pci/Kconfig
>   create mode 100644 drivers/vfio/pci/Makefile
>   create mode 100644 drivers/vfio/pci/vfio_pci.c
>   create mode 100644 drivers/vfio/pci/vfio_pci_config.c
>   create mode 100644 drivers/vfio/pci/vfio_pci_intrs.c
>   create mode 100644 drivers/vfio/pci/vfio_pci_private.h
>   create mode 100644 drivers/vfio/pci/vfio_pci_rdwr.c
>   create mode 100644 drivers/vfio/vfio.c
>   create mode 100644 drivers/vfio/vfio_iommu_x86.c
>   create mode 100644 include/linux/vfio.h