kvm

run

@@ -7,6 +7,7 @@ arch=x86_64
 cpus=1
 debug_vm=''
 kgdb=false
+kvm=false
 nographic=false
 # norandmaps: Don't use address space randomization. Equivalent to echo 0 > /proc/sys/kernel/randomize_va_space.
 # printk.time=y: log in format: "[time ] msg" for all printk messages.
@@ -19,7 +20,7 @@ gem5=false
 gem5opts=''
 initrd=false
 root=''
-while getopts a:c:Dde:G:giknt:x OPT; do
+while getopts a:c:Dde:G:giKknt:x OPT; do
   case "$OPT" in
     a)
       arch="$OPTARG"
@@ -36,6 +37,9 @@ while getopts a:c:Dde:G:giknt:x OPT; do
     e)
       extra_append="$extra_append $OPTARG"
       ;;
+    K)
+      kvm=true
+      ;;
     k)
       extra_append="$extra_append kgdbwait"
       # For those who want to try KDB.
@@ -66,6 +70,9 @@ if $gem5; then
   outdir="$(pwd)/buildroot/output.${arch}-gem5~"
   gem5_dir="$(pwd)/gem5/gem5"
   if [ "$arch" = x86_64 ]; then
+    if "$kvm"; then
+      extra_flags="$extra_flags --cpu-type=X86KvmCPU"
+    fi
     cmd="\
 M5_PATH='$(pwd)/gem5/gem5-system' \
 '${gem5_dir}/build/X86/gem5.opt' \
@@ -95,6 +102,9 @@ $extra_flags \
   fi
 else
   buildroot_out_dir="./buildroot/output.${arch}~"
+  if "$kvm"; then
+    extra_flags="$extra_flags -enable-kvm"
+  fi
   extra_flags="$extra_flags_qemu $extra_flags"
   images_dir="$buildroot_out_dir/images"
   qemu_common="\