diff --git a/README.md b/README.md
index bc51a0807..3fd9f9ec0 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,7 @@ Destination:
 
 Hardware customization:
 * `CPUs` - number of CPU sockets. Inherited from source VM by default.
+* `CPU_reservation` - Amount of reserved CPU resources in MHz. Inherited from source VM by default.
 * `RAM` - Amount of RAM in megabytes. Inherited from source VM by default.
 
 Provisioning:
@@ -98,6 +99,7 @@ Post-processing:
       "linked_clone": true,
 
       "CPUs": 2,
+      "CPU_reservation": 1000,
       "RAM": 8192,
 
       "ssh_username": "root",
diff --git a/step_hardware.go b/step_hardware.go
index 38771c332..2a1ea04af 100644
--- a/step_hardware.go
+++ b/step_hardware.go
@@ -9,8 +9,9 @@ import (
 )
 
 type HardwareConfig struct {
-	CPUs int32 `mapstructure:"CPUs"`
-	RAM  int64 `mapstructure:"RAM"`
+	CPUs           int32 `mapstructure:"CPUs"`
+	CPUReservation int64 `mapstructure:"CPU_reservation"`
+	RAM            int64 `mapstructure:"RAM"`
 }
 
 type StepConfigureHardware struct {
@@ -29,6 +30,10 @@ func (s *StepConfigureHardware) Run(state multistep.StateBag) multistep.StepActi
 		confSpec.NumCPUs = s.config.CPUs
 		confSpec.MemoryMB = s.config.RAM
 
+		var cpuSpec types.ResourceAllocationInfo
+		cpuSpec.Reservation = s.config.CPUReservation
+		confSpec.CpuAllocation = &cpuSpec
+
 		task, err := vm.Reconfigure(ctx, confSpec)
 		if err != nil {
 			state.Put("error", err)