On 2/26/2025 3:08 PM, Nuno Das Neves wrote: > Provide a set of IOCTLs for creating and managing child partitions when > running as root partition on Hyper-V. The new driver is enabled via > CONFIG_MSHV_ROOT. > > A brief overview of the interface: > > MSHV_CREATE_PARTITION is the entry point, returning a file descriptor > representing a child partition. IOCTLs on this fd can be used to map > memory, create VPs, etc. > > Creating a VP returns another file descriptor representing that VP which > in turn has another set of corresponding IOCTLs for running the VP, > getting/setting state, etc. > > MSHV_ROOT_HVCALL is a generic "passthrough" hypercall IOCTL which can be > used for a number of partition or VP hypercalls. This is for hypercalls > that do not affect any state in the kernel driver, such as getting and > setting VP registers and partition properties, translating addresses, > etc. It is "passthrough" because the binary input and output for the > hypercall is only interpreted by the VMM - the kernel driver does > nothing but insert the VP and partition id where necessary (which are > always in the same place), and execute the hypercall. > > Co-developed-by: Wei Liu <wei.liu@xxxxxxxxxx> > Signed-off-by: Wei Liu <wei.liu@xxxxxxxxxx> > Co-developed-by: Stanislav Kinsburskii <skinsburskii@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: Stanislav Kinsburskii <skinsburskii@xxxxxxxxxxxxxxxxxxx> > Co-developed-by: Praveen K Paladugu <prapal@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: Praveen K Paladugu <prapal@xxxxxxxxxxxxxxxxxxx> > Co-developed-by: Mukesh Rathor <mrathor@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: Mukesh Rathor <mrathor@xxxxxxxxxxxxxxxxxxx> > Co-developed-by: Jinank Jain <jinankjain@xxxxxxxxxxxxx> > Signed-off-by: Jinank Jain <jinankjain@xxxxxxxxxxxxx> > Co-developed-by: Muminul Islam <muislam@xxxxxxxxxxxxx> > Signed-off-by: Muminul Islam <muislam@xxxxxxxxxxxxx> > Co-developed-by: Anirudh Rayabharam <anrayabh@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: Anirudh Rayabharam <anrayabh@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: Nuno Das Neves <nunodasneves@xxxxxxxxxxxxxxxxxxx> > --- I see some issues reported by checkpatch, both vanilla and --strict. <snip> Thanks, Easwar (he/him)
