Merge pull request #528 from darkengine-io/kvm-hidden

Allow KVM hiding with the kvm_hidden attr

README.md

@@ -201,6 +201,7 @@ end
 * `graphics_passwd` - Sets the password for the display protocol. Working for vnc and spice. by default working without passsword.
 * `graphics_autoport` - Sets autoport for graphics, libvirt in this case ignores graphics_port value, Defaults to 'yes'. Possible value are "yes" and "no"
 * `keymap` - Set keymap for vm. default: en-us
+* `kvm_hidden` - [Hide the hypervisor from the guest](https://libvirt.org/formatdomain.html#elementsFeatures). Useful for GPU passthrough on stubborn drivers. Default is false.
 * `video_type` - Sets the graphics card type exposed to the guest.  Defaults to "cirrus".  [Possible values](http://libvirt.org/formatdomain.html#elementsVideo) are "vga", "cirrus", "vmvga", "xen", "vbox", or "qxl".
 * `video_vram` - Used by some graphics card types to vary the amount of RAM dedicated to video.  Defaults to 9216.
 * `machine` - Sets machine type. Equivalent to qemu `-machine`. Use `qemu-system-x86_64 -machine help` to get a list of supported machines.

lib/vagrant-libvirt/action/create_domain.rb

@@ -57,6 +57,7 @@ module VagrantPlugins
           @video_type = config.video_type
           @video_vram = config.video_vram
           @keymap = config.keymap
+          @kvm_hidden = config.kvm_hidden
 
           # Boot order
           @boot_order = config.boot_order

lib/vagrant-libvirt/config.rb

@@ -78,6 +78,7 @@ module VagrantPlugins
       attr_accessor :video_type
       attr_accessor :video_vram
       attr_accessor :keymap
+      attr_accessor :kvm_hidden
 
       # Sets the max number of NICs that can be created
       # Default set to 8. Don't change the default unless you know
@@ -140,6 +141,7 @@ module VagrantPlugins
         @video_type        = UNSET_VALUE
         @video_vram        = UNSET_VALUE
         @keymap            = UNSET_VALUE
+        @kvm_hidden        = UNSET_VALUE
 
         @nic_adapter_count = UNSET_VALUE
 
@@ -401,6 +403,7 @@ module VagrantPlugins
         @video_type = 'cirrus' if @video_type == UNSET_VALUE
         @video_vram = 9216 if @video_vram == UNSET_VALUE
         @keymap = 'en-us' if @keymap == UNSET_VALUE
+        @kvm_hidden = false if @kvm_hidden == UNSET_VALUE
         @nic_adapter_count = 8 if @nic_adapter_count == UNSET_VALUE
 
         # Boot order

lib/vagrant-libvirt/templates/domain.xml.erb

@@ -44,6 +44,11 @@
     <acpi/>
     <apic/>
     <pae/>
+    <% if @kvm_hidden %>
+      <kvm>
+        <hidden state='on'/>
+      </kvm>
+    <% end %>
   </features>
   <clock offset='utc'/>
   <devices>