On Thu, Jul 05, 2018 at 03:11:32PM +0100, Richard W.M. Jones wrote: > VMware represents these internally as two signed 64 bit integers, eg: > > vm.genid = "-570734802784577186" > vm.genidx = "-5042519231342505152" > > I am still trying to get verification, but I believe the first is the > low 64 bit word and the second is the high 64 bit word.
I have now been able to verify how this works using a real VMware hypervisor (thanks to help from Ming Xie). For the record, here is how it maps, since I could not find any documentation about this. VMX file contains: vm.genid = "7344585841658099715" vm.genidX = "-8483171368186442967" Those numbers are signed 64 bit integers written in hex as: vm.genid = 65 ED 35 E8 E2 64 F8 03 vm.genidX = 8A 45 B8 96 1E 7B 8B 29 In the guest the VMGENID.EXE program prints (with my spaces added for clarity): VmCounterValue: 65 ED 35 E8 E2 64 F8 03 : 8A 45 B8 96 1E 7B 8B 29 So this confirms my original guess. Note that VMware is not doing any endianness adjustment, but then VMware only works on LE hardware. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://people.redhat.com/~rjones/virt-df/
