PAE used by other programs
Posted: Tue Sep 07, 2010 5:43 pm
If VSuite is configured to use invisible memory, does that mean that we must disable use of PAE/NX by any other programs, such as VirtualBox?
Hi,
No, it doesn't. The "PAE/NX" setting in VirtualBox is to determine whether the PAE and NX capabilities of the host CPU will be exposed to the virtual machine. Enabled "PAE" is a necessary condition for using Invisible Memory, but it is not a sufficient condition. So even you enable "PAE/NX" setting in VirtualBox, it doesn't mean that virtual box or guest OS must use Invisible Memory. Besides, the "phyiscal memory" in guest OS is pre-allocated from host OS, so generally the memory found in guest OS is the visible memory in host OS.
The above is for virtual box only. Other programs might have different defines for their "PAE" settings.