| Message ID | 20230602220318.15323-1-brett.creeley@amd.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | pds_vfio driver | expand |
[sorry, not-sorry for the top post] Thanks Jason and Shameer for prior review comments, I hope you both can find time to check v10 as well. Others that previously stepped up to be reviewers for new vfio-pci variant drivers, please jump in. Thanks, Alex On Fri, 2 Jun 2023 15:03:11 -0700 Brett Creeley <brett.creeley@amd.com> wrote: > This is a patchset for a new vendor specific VFIO driver > (pds_vfio) for use with the AMD/Pensando Distributed Services Card > (DSC). This driver makes use of the pds_core driver. > > This driver will use the pds_core device's adminq as the VFIO > control path to the DSC. In order to make adminq calls, the VFIO > instance makes use of functions exported by the pds_core driver. > > In order to receive events from pds_core, the pds_vfio driver > registers to a private notifier. This is needed for various events > that come from the device. > > An ASCII diagram of a VFIO instance looks something like this and can > be used with the VFIO subsystem to provide the VF device VFIO and live > migration support. > > .------. .-----------------------. > | QEMU |--| VM .-------------. | > '......' | | Eth VF | | > | | .-------------. | > | | | SR-IOV VF | | > | | '-------------' | > | '------------||---------' > .--------------. || > |/dev/<vfio_fd>| || > '--------------' || > Host Userspace | || > =================================================== || > Host Kernel | || > .--------. || > |vfio-pci| || > '--------' || > .------------------. || || > | | exported API |<----+ || || > | '--------------| | || || > | | .-------------. || > | pds_core |--->| pds_vfio | || > '------------------' | '-------------' || > || | || || > 09:00.0 notifier 09:00.1 || > == PCI ===============================================||===== > || || || > .----------. .----------. || > ,-----| PF |----------| VF |-------------------, > | '----------' '----------' | VF | > | DSC | data/control | > | | path | > ----------------------------------------------------------- > > > The pds_vfio driver is targeted to reside in drivers/vfio/pci/pds. > It makes use of and introduces new files in the common include/linux/pds > include directory. > > Changes: > > v10: > - Various fixes/suggestions by Jason Gunthorpe > - Simplify pds_vfio_get_lm_file() based on fpga_mgr_buf_load() > - Clean-ups/fixes based on clang-format > - Remove any double goto labels > - Name goto labels baesed on what needs to be cleaned/freed > instead of a "call from" scheme > - Fix any goto unwind ordering issues > - Make sure call dma_map_single() after data is written to > memory in pds_vfio_dma_map_lm_file() > - Don't use bitmap_zalloc() for the dirty bitmaps > - Use vzalloc() for dirty bitmaps and refactor how the bitmaps are DMA'd > to and from the device in pds_vfio_dirty_seq_ack() > - Remove unnecessary goto in pds_vfio_dirty_disable() > > v9: > https://lore.kernel.org/netdev/20230422010642.60720-1-brett.creeley@amd.com/ > - Various fixes/suggestions by Alex Williamson > - Fix how ID is generated in client registration > - Add helper functions to get the VF's struct device and struct > pci_dev pointers instead of caching the struct pci dev > - Remove redundant pds_vfio_lm_state() function and remove any > places this was being called > - Fix multi-line comments to follow standard convention > - Remove confusing comments in > pds_vfio_step_device_state_locked() since the driver's > migration states align with the VFIO documentation > - Validate pdsc returned from pdsc_get_pf_struct() > - Various fixes/suggestions by Jason Gunthorpe > - Use struct pdsc instead of void * > - Use {} instead of {0} for structure initialization > - Use unions on the stack instead of casting to the union when > sending AQ commands, which required including pds_lm.h in > pds_adminq.h > - Replace use of dma_alloc_coherent() when creating the sgl DMA > entries for the LM file > - Remove cached struct device *coredev and instead use > pci_physfn() to get the pds_core's struct device pointer > - Drop the recovery work item and call pds_vfio_recovery() > directly from the notifier callback > - Remove unnecessary #define for "pds_vfio_lm" and just use the > string inline to the anon_inode_getfile() argument > - Fix LM file reference counting > - Move initialization of some struct members to when the struct is being > initialized for AQ commands > - Make use of GFP_KERNEL_ACCOUNT where it makes sense > - Replace PDS_VFIO_DRV_NAME with KBUILD_MODNAME > - Update to latest pds_core exported functions > - Remove duplicated prototypes for > pds_vfio_dma_logging_[start|stop|report] from lm.h > - Hold pds_vfio->state_mutex while starting, stopping, and reporting > dirty page tracking in pds_vfio_dma_logging_[start|stop|report] > - Remove duplicate PDS_DEV_TYPE_LM_STR define from pds_lm.h that's > already included in pds_common.h > - Replace use of dma_alloc_coherent() when creating the sgl DMA > entries for the dirty bitmaps > > v8: > https://lore.kernel.org/netdev/20230404190141.57762-1-brett.creeley@amd.com/ > - provide default iommufd callbacks for bind_iommufd, unbind_iommufd, and > attach_ioas for the VFIO device as suggested by Shameerali Kolothum > Thodi > > v7: > https://lore.kernel.org/netdev/20230331003612.17569-1-brett.creeley@amd.com/ > - Disable and clean up dirty page tracking when the VFIO device is closed > - Various improvements suggested by Simon Horman: > - Fix RCT in vfio_combine_iova_ranges() > - Simplify function exit paths by removing unnecessary goto > labels > - Cleanup pds_vifo_print_guest_region_info() by adding a goto > label for freeing memory, which allowed for reduced > indentation on a for loop > - Where possible use C99 style for loops > > v6: > https://lore.kernel.org/netdev/20230327200553.13951-1-brett.creeley@amd.com/ > - As suggested by Alex Williamson, use pci_domain_nr() macro to make sure > the pds_vfio client's devname is unique > - Remove unnecessary forward declaration and include > - Fix copyright comment to use correct company name > - Remove "." from struct documentation for consistency > > v5: > https://lore.kernel.org/netdev/20230322203442.56169-1-brett.creeley@amd.com/ > - Fix SPDX comments in .h files > - Remove adminqcq argument from pdsc_post_adminq() uses > - Unregister client on vfio_pci_core_register_device() failure > - Other minor checkpatch issues > > v4: > https://lore.kernel.org/netdev/20230308052450.13421-1-brett.creeley@amd.com/ > - Update cover letter ASCII diagram to reflect new driver architecture > - Remove auxiliary driver implementation > - Use pds_core's exported functions to communicate with the device > - Implement and register notifier for events from the device/pds_core > - Use module_pci_driver() macro since auxiliary driver configuration is > no longer needed in __init/__exit > > v3: > https://lore.kernel.org/netdev/20230219083908.40013-1-brett.creeley@amd.com/ > - Update copyright year to 2023 and use "Advanced Micro Devices, Inc." > for the company name > - Clarify the fact that AMD/Pensando's VFIO solution is device type > agnostic, which aligns with other current VFIO solutions > - Add line in drivers/vfio/pci/Makefile to build pds_vfio > - Move documentation to amd sub-directory > - Remove some dead code due to the pds_core implementation of > listening to BIND/UNBIND events > - Move a dev_dbg() to a previous patch in the series > - Add implementation for vfio_migration_ops.migration_get_data_size to > return the maximum possible device state size > > RFC to v2: > https://lore.kernel.org/all/20221214232136.64220-1-brett.creeley@amd.com/ > - Implement state transitions for VFIO_MIGRATION_P2P flag > - Improve auxiliary driver probe by returning EPROBE_DEFER > when the PCI driver is not set up correctly > - Add pointer to docs in > Documentation/networking/device_drivers/ethernet/index.rst > > RFC: > https://lore.kernel.org/all/20221207010705.35128-1-brett.creeley@amd.com/ > > > Brett Creeley (7): > vfio: Commonize combine_ranges for use in other VFIO drivers > vfio/pds: Initial support for pds_vfio VFIO driver > vfio/pds: register with the pds_core PF > vfio/pds: Add VFIO live migration support > vfio/pds: Add support for dirty page tracking > vfio/pds: Add support for firmware recovery > vfio/pds: Add Kconfig and documentation > > .../device_drivers/ethernet/amd/pds_vfio.rst | 79 +++ > .../device_drivers/ethernet/index.rst | 1 + > MAINTAINERS | 7 + > drivers/vfio/pci/Kconfig | 2 + > drivers/vfio/pci/Makefile | 2 + > drivers/vfio/pci/mlx5/cmd.c | 48 +- > drivers/vfio/pci/pds/Kconfig | 20 + > drivers/vfio/pci/pds/Makefile | 11 + > drivers/vfio/pci/pds/cmds.c | 487 +++++++++++++++ > drivers/vfio/pci/pds/cmds.h | 25 + > drivers/vfio/pci/pds/dirty.c | 577 ++++++++++++++++++ > drivers/vfio/pci/pds/dirty.h | 38 ++ > drivers/vfio/pci/pds/lm.c | 421 +++++++++++++ > drivers/vfio/pci/pds/lm.h | 41 ++ > drivers/vfio/pci/pds/pci_drv.c | 206 +++++++ > drivers/vfio/pci/pds/pci_drv.h | 9 + > drivers/vfio/pci/pds/vfio_dev.c | 234 +++++++ > drivers/vfio/pci/pds/vfio_dev.h | 45 ++ > drivers/vfio/vfio_main.c | 47 ++ > include/linux/pds/pds_adminq.h | 395 ++++++++++++ > include/linux/pds/pds_common.h | 2 + > include/linux/vfio.h | 3 + > 22 files changed, 2653 insertions(+), 47 deletions(-) > create mode 100644 Documentation/networking/device_drivers/ethernet/amd/pds_vfio.rst > create mode 100644 drivers/vfio/pci/pds/Kconfig > create mode 100644 drivers/vfio/pci/pds/Makefile > create mode 100644 drivers/vfio/pci/pds/cmds.c > create mode 100644 drivers/vfio/pci/pds/cmds.h > create mode 100644 drivers/vfio/pci/pds/dirty.c > create mode 100644 drivers/vfio/pci/pds/dirty.h > create mode 100644 drivers/vfio/pci/pds/lm.c > create mode 100644 drivers/vfio/pci/pds/lm.h > create mode 100644 drivers/vfio/pci/pds/pci_drv.c > create mode 100644 drivers/vfio/pci/pds/pci_drv.h > create mode 100644 drivers/vfio/pci/pds/vfio_dev.c > create mode 100644 drivers/vfio/pci/pds/vfio_dev.h >
> From: Brett Creeley <brett.creeley@amd.com> > Sent: Saturday, June 3, 2023 6:03 AM > > This is a patchset for a new vendor specific VFIO driver > (pds_vfio) for use with the AMD/Pensando Distributed Services Card > (DSC). This driver makes use of the pds_core driver. > > This driver will use the pds_core device's adminq as the VFIO > control path to the DSC. In order to make adminq calls, the VFIO > instance makes use of functions exported by the pds_core driver. > > In order to receive events from pds_core, the pds_vfio driver > registers to a private notifier. This is needed for various events > that come from the device. > > An ASCII diagram of a VFIO instance looks something like this and can > be used with the VFIO subsystem to provide the VF device VFIO and live > migration support. > > .------. .-----------------------. > | QEMU |--| VM .-------------. | > '......' | | Eth VF | | > | | .-------------. | > | | | SR-IOV VF | | > | | '-------------' | > | '------------||---------' > .--------------. || > |/dev/<vfio_fd>| || > '--------------' || > Host Userspace | || > =================================================== || > Host Kernel | || > .--------. || > |vfio-pci| || > '--------' || > .------------------. || || > | | exported API |<----+ || || > | '--------------| | || || > | | .-------------. || > | pds_core |--->| pds_vfio | || > '------------------' | '-------------' || > || | || || > 09:00.0 notifier 09:00.1 || > == PCI ===============================================||===== > || || || > .----------. .----------. || > ,-----| PF |----------| VF |-------------------, > | '----------' '----------' | VF | > | DSC | data/control | > | | path | > ----------------------------------------------------------- > why is "VF data/control path" drawn out of the VF box?
On 6/15/2023 11:47 PM, Tian, Kevin wrote: > Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding. > > >> From: Brett Creeley <brett.creeley@amd.com> >> Sent: Saturday, June 3, 2023 6:03 AM >> >> This is a patchset for a new vendor specific VFIO driver >> (pds_vfio) for use with the AMD/Pensando Distributed Services Card >> (DSC). This driver makes use of the pds_core driver. >> >> This driver will use the pds_core device's adminq as the VFIO >> control path to the DSC. In order to make adminq calls, the VFIO >> instance makes use of functions exported by the pds_core driver. >> >> In order to receive events from pds_core, the pds_vfio driver >> registers to a private notifier. This is needed for various events >> that come from the device. >> >> An ASCII diagram of a VFIO instance looks something like this and can >> be used with the VFIO subsystem to provide the VF device VFIO and live >> migration support. >> >> .------. .-----------------------. >> | QEMU |--| VM .-------------. | >> '......' | | Eth VF | | >> | | .-------------. | >> | | | SR-IOV VF | | >> | | '-------------' | >> | '------------||---------' >> .--------------. || >> |/dev/<vfio_fd>| || >> '--------------' || >> Host Userspace | || >> =================================================== || >> Host Kernel | || >> .--------. || >> |vfio-pci| || >> '--------' || >> .------------------. || || >> | | exported API |<----+ || || >> | '--------------| | || || >> | | .-------------. || >> | pds_core |--->| pds_vfio | || >> '------------------' | '-------------' || >> || | || || >> 09:00.0 notifier 09:00.1 || >> == PCI ===============================================||===== >> || || || >> .----------. .----------. || >> ,-----| PF |----------| VF |-------------------, >> | '----------' '----------' | VF | >> | DSC | data/control | >> | | path | >> ----------------------------------------------------------- >> > > why is "VF data/control path" drawn out of the VF box? Just a mistake in the drawing. I can fix it. Thanks. >
On 6/2/2023 3:03 PM, Brett Creeley wrote: > This is a patchset for a new vendor specific VFIO driver > (pds_vfio) for use with the AMD/Pensando Distributed Services Card > (DSC). This driver makes use of the pds_core driver. > > This driver will use the pds_core device's adminq as the VFIO > control path to the DSC. In order to make adminq calls, the VFIO > instance makes use of functions exported by the pds_core driver. > > In order to receive events from pds_core, the pds_vfio driver > registers to a private notifier. This is needed for various events > that come from the device. > > An ASCII diagram of a VFIO instance looks something like this and can > be used with the VFIO subsystem to provide the VF device VFIO and live > migration support. > > .------. .-----------------------. > | QEMU |--| VM .-------------. | > '......' | | Eth VF | | > | | .-------------. | > | | | SR-IOV VF | | > | | '-------------' | > | '------------||---------' > .--------------. || > |/dev/<vfio_fd>| || > '--------------' || > Host Userspace | || > =================================================== || > Host Kernel | || > .--------. || > |vfio-pci| || > '--------' || > .------------------. || || > | | exported API |<----+ || || > | '--------------| | || || > | | .-------------. || > | pds_core |--->| pds_vfio | || > '------------------' | '-------------' || > || | || || > 09:00.0 notifier 09:00.1 || > == PCI ===============================================||===== > || || || > .----------. .----------. || > ,-----| PF |----------| VF |-------------------, > | '----------' '----------' | VF | > | DSC | data/control | > | | path | > ----------------------------------------------------------- > > > The pds_vfio driver is targeted to reside in drivers/vfio/pci/pds. > It makes use of and introduces new files in the common include/linux/pds > include directory. > > Changes: > > v10: Just as a quick note, I don't plan to push v11 next week as I am on vacation. I appreciate all the reviews and hope to have updates when I get back on the week of 6/26. Thanks, Brett [...]
This is a patchset for a new vendor specific VFIO driver (pds_vfio) for use with the AMD/Pensando Distributed Services Card (DSC). This driver makes use of the pds_core driver. This driver will use the pds_core device's adminq as the VFIO control path to the DSC. In order to make adminq calls, the VFIO instance makes use of functions exported by the pds_core driver. In order to receive events from pds_core, the pds_vfio driver registers to a private notifier. This is needed for various events that come from the device. An ASCII diagram of a VFIO instance looks something like this and can be used with the VFIO subsystem to provide the VF device VFIO and live migration support. .------. .-----------------------. | QEMU |--| VM .-------------. | '......' | | Eth VF | | | | .-------------. | | | | SR-IOV VF | | | | '-------------' | | '------------||---------' .--------------. || |/dev/<vfio_fd>| || '--------------' || Host Userspace | || =================================================== || Host Kernel | || .--------. || |vfio-pci| || '--------' || .------------------. || || | | exported API |<----+ || || | '--------------| | || || | | .-------------. || | pds_core |--->| pds_vfio | || '------------------' | '-------------' || || | || || 09:00.0 notifier 09:00.1 || == PCI ===============================================||===== || || || .----------. .----------. || ,-----| PF |----------| VF |-------------------, | '----------' '----------' | VF | | DSC | data/control | | | path | ----------------------------------------------------------- The pds_vfio driver is targeted to reside in drivers/vfio/pci/pds. It makes use of and introduces new files in the common include/linux/pds include directory. Changes: v10: - Various fixes/suggestions by Jason Gunthorpe - Simplify pds_vfio_get_lm_file() based on fpga_mgr_buf_load() - Clean-ups/fixes based on clang-format - Remove any double goto labels - Name goto labels baesed on what needs to be cleaned/freed instead of a "call from" scheme - Fix any goto unwind ordering issues - Make sure call dma_map_single() after data is written to memory in pds_vfio_dma_map_lm_file() - Don't use bitmap_zalloc() for the dirty bitmaps - Use vzalloc() for dirty bitmaps and refactor how the bitmaps are DMA'd to and from the device in pds_vfio_dirty_seq_ack() - Remove unnecessary goto in pds_vfio_dirty_disable() v9: https://lore.kernel.org/netdev/20230422010642.60720-1-brett.creeley@amd.com/ - Various fixes/suggestions by Alex Williamson - Fix how ID is generated in client registration - Add helper functions to get the VF's struct device and struct pci_dev pointers instead of caching the struct pci dev - Remove redundant pds_vfio_lm_state() function and remove any places this was being called - Fix multi-line comments to follow standard convention - Remove confusing comments in pds_vfio_step_device_state_locked() since the driver's migration states align with the VFIO documentation - Validate pdsc returned from pdsc_get_pf_struct() - Various fixes/suggestions by Jason Gunthorpe - Use struct pdsc instead of void * - Use {} instead of {0} for structure initialization - Use unions on the stack instead of casting to the union when sending AQ commands, which required including pds_lm.h in pds_adminq.h - Replace use of dma_alloc_coherent() when creating the sgl DMA entries for the LM file - Remove cached struct device *coredev and instead use pci_physfn() to get the pds_core's struct device pointer - Drop the recovery work item and call pds_vfio_recovery() directly from the notifier callback - Remove unnecessary #define for "pds_vfio_lm" and just use the string inline to the anon_inode_getfile() argument - Fix LM file reference counting - Move initialization of some struct members to when the struct is being initialized for AQ commands - Make use of GFP_KERNEL_ACCOUNT where it makes sense - Replace PDS_VFIO_DRV_NAME with KBUILD_MODNAME - Update to latest pds_core exported functions - Remove duplicated prototypes for pds_vfio_dma_logging_[start|stop|report] from lm.h - Hold pds_vfio->state_mutex while starting, stopping, and reporting dirty page tracking in pds_vfio_dma_logging_[start|stop|report] - Remove duplicate PDS_DEV_TYPE_LM_STR define from pds_lm.h that's already included in pds_common.h - Replace use of dma_alloc_coherent() when creating the sgl DMA entries for the dirty bitmaps v8: https://lore.kernel.org/netdev/20230404190141.57762-1-brett.creeley@amd.com/ - provide default iommufd callbacks for bind_iommufd, unbind_iommufd, and attach_ioas for the VFIO device as suggested by Shameerali Kolothum Thodi v7: https://lore.kernel.org/netdev/20230331003612.17569-1-brett.creeley@amd.com/ - Disable and clean up dirty page tracking when the VFIO device is closed - Various improvements suggested by Simon Horman: - Fix RCT in vfio_combine_iova_ranges() - Simplify function exit paths by removing unnecessary goto labels - Cleanup pds_vifo_print_guest_region_info() by adding a goto label for freeing memory, which allowed for reduced indentation on a for loop - Where possible use C99 style for loops v6: https://lore.kernel.org/netdev/20230327200553.13951-1-brett.creeley@amd.com/ - As suggested by Alex Williamson, use pci_domain_nr() macro to make sure the pds_vfio client's devname is unique - Remove unnecessary forward declaration and include - Fix copyright comment to use correct company name - Remove "." from struct documentation for consistency v5: https://lore.kernel.org/netdev/20230322203442.56169-1-brett.creeley@amd.com/ - Fix SPDX comments in .h files - Remove adminqcq argument from pdsc_post_adminq() uses - Unregister client on vfio_pci_core_register_device() failure - Other minor checkpatch issues v4: https://lore.kernel.org/netdev/20230308052450.13421-1-brett.creeley@amd.com/ - Update cover letter ASCII diagram to reflect new driver architecture - Remove auxiliary driver implementation - Use pds_core's exported functions to communicate with the device - Implement and register notifier for events from the device/pds_core - Use module_pci_driver() macro since auxiliary driver configuration is no longer needed in __init/__exit v3: https://lore.kernel.org/netdev/20230219083908.40013-1-brett.creeley@amd.com/ - Update copyright year to 2023 and use "Advanced Micro Devices, Inc." for the company name - Clarify the fact that AMD/Pensando's VFIO solution is device type agnostic, which aligns with other current VFIO solutions - Add line in drivers/vfio/pci/Makefile to build pds_vfio - Move documentation to amd sub-directory - Remove some dead code due to the pds_core implementation of listening to BIND/UNBIND events - Move a dev_dbg() to a previous patch in the series - Add implementation for vfio_migration_ops.migration_get_data_size to return the maximum possible device state size RFC to v2: https://lore.kernel.org/all/20221214232136.64220-1-brett.creeley@amd.com/ - Implement state transitions for VFIO_MIGRATION_P2P flag - Improve auxiliary driver probe by returning EPROBE_DEFER when the PCI driver is not set up correctly - Add pointer to docs in Documentation/networking/device_drivers/ethernet/index.rst RFC: https://lore.kernel.org/all/20221207010705.35128-1-brett.creeley@amd.com/ Brett Creeley (7): vfio: Commonize combine_ranges for use in other VFIO drivers vfio/pds: Initial support for pds_vfio VFIO driver vfio/pds: register with the pds_core PF vfio/pds: Add VFIO live migration support vfio/pds: Add support for dirty page tracking vfio/pds: Add support for firmware recovery vfio/pds: Add Kconfig and documentation .../device_drivers/ethernet/amd/pds_vfio.rst | 79 +++ .../device_drivers/ethernet/index.rst | 1 + MAINTAINERS | 7 + drivers/vfio/pci/Kconfig | 2 + drivers/vfio/pci/Makefile | 2 + drivers/vfio/pci/mlx5/cmd.c | 48 +- drivers/vfio/pci/pds/Kconfig | 20 + drivers/vfio/pci/pds/Makefile | 11 + drivers/vfio/pci/pds/cmds.c | 487 +++++++++++++++ drivers/vfio/pci/pds/cmds.h | 25 + drivers/vfio/pci/pds/dirty.c | 577 ++++++++++++++++++ drivers/vfio/pci/pds/dirty.h | 38 ++ drivers/vfio/pci/pds/lm.c | 421 +++++++++++++ drivers/vfio/pci/pds/lm.h | 41 ++ drivers/vfio/pci/pds/pci_drv.c | 206 +++++++ drivers/vfio/pci/pds/pci_drv.h | 9 + drivers/vfio/pci/pds/vfio_dev.c | 234 +++++++ drivers/vfio/pci/pds/vfio_dev.h | 45 ++ drivers/vfio/vfio_main.c | 47 ++ include/linux/pds/pds_adminq.h | 395 ++++++++++++ include/linux/pds/pds_common.h | 2 + include/linux/vfio.h | 3 + 22 files changed, 2653 insertions(+), 47 deletions(-) create mode 100644 Documentation/networking/device_drivers/ethernet/amd/pds_vfio.rst create mode 100644 drivers/vfio/pci/pds/Kconfig create mode 100644 drivers/vfio/pci/pds/Makefile create mode 100644 drivers/vfio/pci/pds/cmds.c create mode 100644 drivers/vfio/pci/pds/cmds.h create mode 100644 drivers/vfio/pci/pds/dirty.c create mode 100644 drivers/vfio/pci/pds/dirty.h create mode 100644 drivers/vfio/pci/pds/lm.c create mode 100644 drivers/vfio/pci/pds/lm.h create mode 100644 drivers/vfio/pci/pds/pci_drv.c create mode 100644 drivers/vfio/pci/pds/pci_drv.h create mode 100644 drivers/vfio/pci/pds/vfio_dev.c create mode 100644 drivers/vfio/pci/pds/vfio_dev.h