On Mon, May 19, 2025 at 10:26:40AM +0530, Naman Jain wrote: > Introduce a new mshv_vtl driver to provide an interface for Virtual > Machine Monitor like OpenVMM and its use as OpenHCL paravisor to > control VTL0 (Virtual trust Level). > Expose devices and support IOCTLs for features like VTL creation, > VTL0 memory management, context switch, making hypercalls, > mapping VTL0 address space to VTL2 userspace, getting new VMBus > messages and channel events in VTL2 etc. > > OpenVMM : https://openvmm.dev/guide/ > > Changes since v2: > https://lore.kernel.org/all/[email protected]/ > * Removed CONFIG_OF dependency (addressed Saurabh's comments > * Fixed typo in "allow_map_intialized" variable name > > Changes since v1: > https://lore.kernel.org/all/[email protected]/ > Addressed Saurabh's comments: > * Split the patch in 2 to keep export symbols separate > * Make MSHV_VTL module tristate and fixed compilation warning that would come > when HYPERV is > compiled as a module. > * Remove the use of ref_count > * Split functionality of mshv_vtl_ioctl_get_set_regs to different functions > mshv_vtl_ioctl_(get|set)_regs as it actually make things simpler > * Fixed use of copy_from_user in atomic context in mshv_vtl_hvcall_call. > Added ToDo comment for info. > * Added extra code to free memory for vtl in error scenarios in > mshv_ioctl_create_vtl() > > Addressed Alok's comments regarding: > * Additional conditional checks > * corrected typo in HV_X64_REGISTER_MSR_MTRR_PHYS_MASKB case > * empty lines before return statement > * Added/edited comments, variable names, structure field names as suggested > to improve > documentation - no functional change here. > > Naman Jain (2): > Drivers: hv: Export some symbols for mshv_vtl > Drivers: hv: Introduce mshv_vtl driver > > drivers/hv/Kconfig | 20 + > drivers/hv/Makefile | 7 +- > drivers/hv/hv.c | 2 + > drivers/hv/hyperv_vmbus.h | 1 + > drivers/hv/mshv_vtl.h | 52 + > drivers/hv/mshv_vtl_main.c | 1783 +++++++++++++++++++++++++++++++++++ > drivers/hv/vmbus_drv.c | 3 +- > include/hyperv/hvgdk_mini.h | 81 ++ > include/hyperv/hvhdk.h | 1 + > include/uapi/linux/mshv.h | 82 ++ > 10 files changed, 2030 insertions(+), 2 deletions(-) > create mode 100644 drivers/hv/mshv_vtl.h > create mode 100644 drivers/hv/mshv_vtl_main.c > > > base-commit: 8566fc3b96539e3235909d6bdda198e1282beaed > -- > 2.34.1 >
For both the patches, Reviewed-by: Saurabh Sengar <[email protected]>
