5.6. Hot Plugging Virtual CPUs

You can hot plug virtual CPUs. Hot plugging means enabling or disabling devices while a virtual machine is running.
The following prerequisites apply:

Important

Hot unplugging virtual CPUs is not currently supported in Red Hat Virtualization.

Procedure 5.16. Hot Plugging Virtual CPUs

  1. Click the Virtual Machines tab and select a running virtual machine.
  2. Click Edit.
  3. Click the System tab.
  4. In the Advanced Parameters section, change the value of Virtual Sockets as required.
  5. Click OK.

Table 5.1. Operating System Support Matrix for vCPU Hot Plug

Operating System
Version
Architecture
Hot Plug Supported
Red Hat Enterprise Linux 6.3+
 
x86
Yes
Red Hat Enterprise Linux 7.0+
 
x86
Yes
Microsoft Windows Server 2008
All
x86
No
Microsoft Windows Server 2008
Standard, Enterprise
x64
No
Microsoft Windows Server 2008
Datacenter
x64
Yes
Microsoft Windows Server 2008 R2
All
x86
No
Microsoft Windows Server 2008 R2
Standard, Enterprise
x64
No
Microsoft Windows Server 2008 R2
Datacenter
x64
Yes
Microsoft Windows Server 2012
All
x64
Yes
Microsoft Windows Server 2012 R2
All
x64
Yes
Microsoft Windows 7
All
x86
No
Microsoft Windows 7
Starter, Home, Home Premium, Professional
x64
No
Microsoft Windows 7
Enterprise, Ultimate
x64
Yes
Microsoft Windows 8.x
All
x86
Yes
Microsoft Windows 8.x
All
x64
Yes