Allow user to specific the -w bhyve option (ignore_bad_msr=yes)

Author: churchers

lib/vm-run

@@ -39,6 +39,7 @@ vm::run(){
     local _guest_support _uefi _uuid _utc _debug _hostbridge _loader
     local _opts _devices _slot=4 _func=0 _taplist _exit _passdev
     local _com _comports _comstring _logpath="/dev/null" _bootrom _run=1
+    local _ignore_msr
 
     # try to load datstore details
     datastore::get_guest "${_name}" || exit 5
@@ -58,6 +59,7 @@ vm::run(){
     config::get "_uuid" "uuid"
     config::get "_utc" "utctime" "no"
     config::get "_debug" "debug" "no"
+    config::get "_ignore_msr" "ignore_bad_msr" "no"
 
     util::log_rotate "guest" "${_name}"
     util::log "guest" "${_name}" "initialising"
@@ -98,6 +100,9 @@ vm::run(){
     # default bhyve options
     _opts="-AHP"
 
+    # ignore access to unimplemented Model Specific Registers?
+    util::checkyesno "${_ignore_msr}" && _opts="${_opts}w"
+
     # if uefi, make sure we have bootrom, then update options for uefi support
     if util::checkyesno "${_uefi}"; then
         if [ ${VERSION_BSD} -lt 1002509 ]; then

vm.8

@@ -938,6 +938,13 @@ based on the hostname and guest name. Because this may change if guests are move
 between systems, the
 .Pa vm create
 command automatically assigns a UUID to all newly created guests.
+.It ignore_bad_msr
+Set to
+.Sy true|on|yes|1
+to configure
+.Xr bhyve 8
+to ignore accesses to unimplemented model specific registers. This is commonly required
+on AMD processors, although is enabled by default for UEFI guests.
 .It grub_installX
 This option allows you to specify grub commands needed to boot the install media for
 this guest.