﻿id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
16428	Restoring snapshots does not work for Multi-processor VMs	hunterbr		"I encountered a serious issue in Vbox 5.1.51 (compiled from source, cloned from git 25 Jan 2017), inside a Vbox VM I have Win7x64 SP1 running, everything works fine, I do a snapshot and shut down the OS. If I restore the snapshot and start the Vbox VM, the following error occurs:
{{{
cpum#1: X86_CPUID_FEATURE_EDX_HTT is not supported by the host but has already exposed to the guest [ver=17 pass=final] (VERR_SSM_LOAD_CPUID_MISMATCH).

Result Code:
NS_ERROR_FAILURE (0x80004005)
Component:
ConsoleWrap
Interface:
IConsole {872da645-4a9b-1727-bee2-5585105b9eed}
}}}
This only happens with VMs with more than one CPU. If I discard the snapshot I can start the machine with two CPU without a problem. If I se
t it to one CPU, the snapshots are working.

The Vbox app is running inside an Ubuntu 16.04.1LTS which is running inside VMware Worksation VM(details below).

VBox running inside an:
 * Ubuntu 16.04.1 LTS
 * Linux ubuntu 4.4.0-59-generic #80-Ubuntu SMP Fri Jan 6 17:47:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

running inside a VM from:
 * VMware® Workstation 12 Pro
 * 12.5.2 build-4638234

 * Memory 4GB
 * Processors: 4 (num cores 1)
 * Virtualization Engine:
 * Prefered mode: Automatic
 * Disable acceleration for binary translation: not set
 * Virtualize Intel VT-x/EPT or AMD-V/RVI: enabled
 * Virtualize CPU performance counter: enabled
 * HD: 200GB
"	defect	closed	VMM	VirtualBox 5.1.14	fixed	multiprocessor snapshot	hunterbr@…	Windows	Linux
