[Bug]: cannot set Page Fusion in VirtualBox 7.2.x

[thedisbo1125]

Version

7.2.0

Host OS Type

Linux

Host OS name + version

Mint Mate 22.2

Host Architecture

x86

Guest OS Type

all

Guest Architecture

x86

Guest OS name + version

No response

Component

VBoxManage CLI

What happened?

Receive error:

VBoxManage: error: Page fusion is only supported on 64-bit hosts
VBoxManage: error: Details: code NS_ERROR_NOT_IMPLEMENTED (0x80004001), component SessionMachine, interface IMachine, callee nsISupports

when attempting to enable Page Fusion on vm using vboxmanage. Verified host is 64-bit. Tested VirtualBox 7.2.0 and 7.2.2 downloaded from VirtualBox website.

Uninstalled 7.2, installed 7.1.12, and was able to set Page Fusion without issues.

Searching source code, error only appears in file "MachineImpl.cpp" and only if "VBOX_WITH_PAGE_SHARING" is not defined (see attached file).

source.txt

How can we reproduce this?

vboxmanage modifyvm test2 --page-fusion=on

Did you upload all of your necessary log files, screenshots, etc.?

• Yes, I've uploaded all pertinent files to this issue.

[klaus-vb]

Seems page fusion has been unintentionally been disabled in the 7.2 codebase. Will need investigation.