Thanks Dave, I like the description and listing the ioctl, and referencing vmmvar.h is a good idea
Cheers Adam On Thu, Apr 1, 2021 at 18:49, Dave Voutila <[email protected]> wrote: > This diff documents the ioctl(2) values supported by vmm(4). Besides > vmd(8) there's at least one application I've seen (Solo5) directly using > vmm(4). > > For now I've tried to have short summary-level details, enough to > provide a general idea of purpose. The data structures aren't included > in the doc, but the mention of <machine/vmmvar.h> at least points to > where they're defined for now. > > Feedback on my mdoc macro usage or verbiage? OK? > > -dv > > Index: share/man/man4/man4.amd64/vmm.4 > =================================================================== > RCS file: /cvs/src/share/man/man4/man4.amd64/vmm.4,v > retrieving revision 1.5 > diff -u -p -r1.5 vmm.4 > --- share/man/man4/man4.amd64/vmm.4 6 Dec 2015 19:06:17 -0000 1.5 > +++ share/man/man4/man4.amd64/vmm.4 1 Apr 2021 10:36:50 -0000 > @@ -22,6 +22,8 @@ > .Nd virtual machine monitor > .Sh SYNOPSIS > .Cd "vmm0 at mainbus0" > +.Pp > +.In machine/vmmvar.h > .Sh DESCRIPTION > The > .Nm > @@ -67,6 +69,45 @@ driver requires at least one CPU with ha > capabilities and nested or extended paging capabilities to be > present on the host. > For more information, consult the CPU vendor's documentation. > +.Pp > +The following > +.Xr ioctl 2 > +commands are provided for managing > +.Nm > +guests: > +.Pp > +.Bl -tag -width Ds -offset indent > +.It Dv VMM_IOC_CREATE Fa "struct vm_create_params *" > +Create a VM, initializing > +.Xr vmm 4 > +if not yet started. (Does not start the VCPU.) > +.It Dv VMM_IOC_RUN Fa "struct vm_run_params *" > +Run a VCPU for a defined VM. Returns on VM-exit, the VCPU stopped, or > +an error occurred > +.It Dv VMM_IOC_INFO Fa "struct vm_info_params *" > +Get information about the VMs currently hosted by > +.Xr vmm 4 > +.It Dv VMM_IOC_TERM Fa "struct vm_terminate_params *" > +Terminate a given VM > +.It Dv VMM_IOC_RESETCPU Fa "struct vm_resetcpu_params *" > +Reset a VCPU to power-on-init state using the provided register state > +.It Dv VMM_IOC_INTR Fa "struct vm_intr_params *" > +Signal a pending interrupt for a VCPU > +.It Dv VMM_IOC_READREGS Fa "struct vm_rwregs_params *" > +Read registers of a VCPU > +.It Dv VMM_IOC_WRITEREGS Fa "struct vm_rwregs_params *" > +Write registers values of a VCPU > +.It Dv VMM_IOC_READVMPARAMS Fa "struct vm_revmparams_params *" > +Read paravirtualized hardware parameters (such as > +.Xr pvclock 4 > +version) for a VM > +.It Dv VMM_IOC_WRITEVMPARAMS Fa "struct vm_rwvmparams_params *" > +Write paravirtualized hardware parameters (such as > +.Xr pvclock 4 > +guest physical addresss) for a VM > +.It Dv VMM_IOC_MPROTECT_EPT Fa "struct vm_mprotect_ept_params *" > +Set access protections on guest page table entries > +(only supported on hosts providing EPT or RVI) > .Sh SEE ALSO > .Xr cpu 4 , > .Xr intro 4 ,
