Hi Alex, Sorry to disturb you. Do you want to review on this version or review a rebased version? :-) If rebase version is better, I can try to do it asap. Thanks, Yi Liu > -----Original Message----- > From: Liu, Yi L > Sent: Tuesday, April 23, 2019 8:15 PM > To: alex.williamson@xxxxxxxxxx; kwankhede@xxxxxxxxxx > Cc: Tian, Kevin <kevin.tian@xxxxxxxxx>; baolu.lu@xxxxxxxxxxxxxxx; Liu, Yi L > <yi.l.liu@xxxxxxxxx>; Sun, Yi Y <yi.y.sun@xxxxxxxxx>; joro@xxxxxxxxxx; jean- > philippe.brucker@xxxxxxx; peterx@xxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > kvm@xxxxxxxxxxxxxxx; yamada.masahiro@xxxxxxxxxxxxx; iommu@lists.linux- > foundation.org > Subject: [RFC v3 0/3] vfio_pci: wrap pci device as a mediated device > > This patchset aims to add a vfio-pci-like meta driver as a demo user of the vfio > changes introduced in "vfio/mdev: IOMMU aware mediated device" patchset from > Baolu Lu. > > Previous RFC v1 has given two proposals and the discussion could be found in > following link. Per the comments, this patchset adds a separate driver named vfio- > mdev-pci. It is a sample driver, but loactes in drivers/vfio/pci due to code sharing > consideration. > The corresponding Kconfig definition is in samples/Kconfig. > > https://lkml.org/lkml/2019/3/4/529 > > Besides the test purpose, per Alex's comments, it could also be a good base driver > for experimenting with device specific mdev migration. > > Specific interface tested in this proposal: > > *) int mdev_set_iommu_device(struct device *dev, > struct device *iommu_device) > introduced in the patch as below: > "[PATCH v5 6/8] vfio/mdev: Add iommu related member in mdev_device" > > > Links: > *) Link of "vfio/mdev: IOMMU aware mediated device" > https://lwn.net/Articles/780522/ > > Please feel free give your comments. > > Thanks, > Yi Liu > > Change log: > v2->v3: > - use vfio-mdev-pci instead of vfio-pci-mdev > - place the new driver under drivers/vfio/pci while define > Kconfig in samples/Kconfig to clarify it is a sample driver > > v1->v2: > - instead of adding kernel option to existing vfio-pci > module in v1, v2 follows Alex's suggestion to add a > separate vfio-pci-mdev module. > - new patchset subject: "vfio/pci: wrap pci device as a mediated device" > > Liu, Yi L (3): > vfio_pci: split vfio_pci.c into two source files > vfio/pci: protect cap/ecap_perm bits alloc/free with atomic op > smaples: add vfio-mdev-pci driver > > drivers/vfio/pci/Makefile | 7 +- > drivers/vfio/pci/common.c | 1511 +++++++++++++++++++++++++++++++++++ > drivers/vfio/pci/vfio_mdev_pci.c | 386 +++++++++ > drivers/vfio/pci/vfio_pci.c | 1476 +--------------------------------- > drivers/vfio/pci/vfio_pci_config.c | 9 + > drivers/vfio/pci/vfio_pci_private.h | 27 + > samples/Kconfig | 11 + > 7 files changed, 1962 insertions(+), 1465 deletions(-) create mode 100644 > drivers/vfio/pci/common.c create mode 100644 drivers/vfio/pci/vfio_mdev_pci.c > > -- > 2.7.4
