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Subject[GIT PULL (PATCH 0/4) v2] VFIO driver for v3.6
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On Wed, 2012-07-25 at 08:53 -0600, Alex Williamson wrote:
> Hi Linus,
>
> This series includes the VFIO userspace driver interface for the
> 3.6 kernel merge window. This driver is intended to provide a
> secure interface for device access using IOMMU protection for
> applications like assignment of physical devices to virtual
> machines. Qemu will be the first user of this interface, enabling
> assignment of PCI devices to Qemu guests. This interface is
> intended to eventually replace the x86-specific assignment mechanism
> currently available in KVM. This interface has the advantage of
> being more secure, by working with IOMMU groups to ensure device
> isolation and providing it's own filtered resource access mechanism,
> and also more flexible, in not being x86 or KVM specific (extensions
> to enable POWER are already working).
>
> As a new driver, I'm including both the individual patches in email,
> as well as a branch to pull from:
>
> git://github.com/awilliam/linux-vfio.git for-linus
>
> This driver is originally the work of Tom Lyon, but has since been
> handed over to me and gone through a complete overhaul thanks to the
> input from David Gibson, Ben Herrenschmidt, Chris Wright, Joerg
> Roedel, and others. This driver has been available in linux-next for
> the last month. Thanks,

randconfig testing in next found a dependency issue that I've fix in the
for-linus branch above. Change from v1 is:

diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig
index cc7db62..5980758 100644
--- a/drivers/vfio/pci/Kconfig
+++ b/drivers/vfio/pci/Kconfig
@@ -1,6 +1,6 @@
config VFIO_PCI
tristate "VFIO support for PCI devices"
- depends on VFIO && PCI
+ depends on VFIO && PCI && EVENTFD
help
Support for the PCI VFIO bus driver. This is required to make
use of PCI drivers using the VFIO framework.
If anyone wants a full resend of v2 to the list with this change, please
let me know. Thanks,

Alex

> ---
>
> Alex Williamson (4):
> vfio: Add PCI device driver
> vfio: Type1 IOMMU implementation
> vfio: Add documentation
> vfio: VFIO core
>
>
> Documentation/ioctl/ioctl-number.txt | 1
> Documentation/vfio.txt | 314 +++++++
> MAINTAINERS | 8
> drivers/Kconfig | 2
> drivers/Makefile | 1
> drivers/vfio/Kconfig | 16
> drivers/vfio/Makefile | 3
> drivers/vfio/pci/Kconfig | 8
> drivers/vfio/pci/Makefile | 4
> drivers/vfio/pci/vfio_pci.c | 579 +++++++++++++
> drivers/vfio/pci/vfio_pci_config.c | 1540 ++++++++++++++++++++++++++++++++++
> drivers/vfio/pci/vfio_pci_intrs.c | 740 ++++++++++++++++
> drivers/vfio/pci/vfio_pci_private.h | 91 ++
> drivers/vfio/pci/vfio_pci_rdwr.c | 269 ++++++
> drivers/vfio/vfio.c | 1420 +++++++++++++++++++++++++++++++
> drivers/vfio/vfio_iommu_type1.c | 753 +++++++++++++++++
> include/linux/vfio.h | 445 ++++++++++
> 17 files changed, 6194 insertions(+)
> 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_type1.c
> create mode 100644 include/linux/vfio.h





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