This series adds Mediated device support to Linux host kernel. Purpose of this series is to provide a common interface for mediated device management that can be used by different devices. This series introduces Mdev core module that create and manage mediated devices, VFIO based driver for mediated PCI devices that are created by Mdev core module and update VFIO type1 IOMMU module to support mediated devices. What's new in v6? - Removed per mdev_device lock for registration callbacks. Vendor driver should implement locking if they need to serialize registration callbacks. - Added mapped region tracking logic and invalidation function to be used by vendor driver. - Moved vfio_pin_pages and vfio_unpin_pages API from IOMMU type1 driver to vfio driver. Added callbacks to vfio ops structure to support pin and unpin APIs in backend iommu module. - Used uuid_le_to_bin() to parse UUID string and convert to bin. This requires following commits from linux master branch: * commit bc9dc9d5eec908806f1b15c9ec2253d44dcf7835 : lib/uuid.c: use correct offset in uuid parser * commit 2b1b0d66704a8cafe83be7114ec4c15ab3a314ad : lib/uuid.c: introduce a few more generic helpers - Requires below commits from linux master branch for mmap region fault handler that uses remap_pfn_range() to setup EPT properly. * commit add6a0cd1c5ba51b201e1361b05a5df817083618 KVM: MMU: try to fix up page faults before giving up * commit 92176a8ede577d0ff78ab3298e06701f67ad5f51 : KVM: MMU: prepare to support mapping of VM_IO and VM_PFNMAP frames Tested: - Single vGPU VM - Multiple vGPU VMs on same GPU Thanks, Kirti Kirti Wankhede (4): vfio: Mediated device Core driver vfio: VFIO driver for mediated PCI device vfio iommu: Add support for mediated devices docs: Add Documentation for Mediated devices Documentation/vfio-mediated-device.txt | 235 ++++++++++++ drivers/vfio/Kconfig | 1 + drivers/vfio/Makefile | 1 + drivers/vfio/mdev/Kconfig | 18 + drivers/vfio/mdev/Makefile | 6 + drivers/vfio/mdev/mdev_core.c | 676 +++++++++++++++++++++++++++++++++ drivers/vfio/mdev/mdev_driver.c | 142 +++++++ drivers/vfio/mdev/mdev_private.h | 33 ++ drivers/vfio/mdev/mdev_sysfs.c | 269 +++++++++++++ drivers/vfio/mdev/vfio_mpci.c | 536 ++++++++++++++++++++++++++ drivers/vfio/pci/vfio_pci_private.h | 6 - drivers/vfio/pci/vfio_pci_rdwr.c | 1 + drivers/vfio/vfio.c | 82 ++++ drivers/vfio/vfio_iommu_type1.c | 499 +++++++++++++++++++++--- include/linux/mdev.h | 236 ++++++++++++ include/linux/vfio.h | 20 +- 16 files changed, 2707 insertions(+), 54 deletions(-) create mode 100644 Documentation/vfio-mediated-device.txt create mode 100644 drivers/vfio/mdev/Kconfig create mode 100644 drivers/vfio/mdev/Makefile create mode 100644 drivers/vfio/mdev/mdev_core.c create mode 100644 drivers/vfio/mdev/mdev_driver.c create mode 100644 drivers/vfio/mdev/mdev_private.h create mode 100644 drivers/vfio/mdev/mdev_sysfs.c create mode 100644 drivers/vfio/mdev/vfio_mpci.c create mode 100644 include/linux/mdev.h -- 2.7.0 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
