search for: xencpuid

Hi, referring to thread: http://www.gossamer-threads.com/lists/xen/users/177385#177385. I have the same thing going on: hypervisors with E5620 Xeon CPUs and hypervisors with E5410 CPUs. Live migrations go wrong when domU''s are not created on the latter and move from the E5410 servers to more recent ones. The rationale being that these CPU''s have less or other capabilities

...re is this documented? The debian examples would seem to indicate you can, by limiting the guest CPU features: Try zgrep cpuid /usr/share/doc/xen-utils-common/examples/* It should also be possible to do so by masking features on the host CPU, via kernel boot options ( see http://zhigang.org/wiki/XenCPUID ) However in 'xm dmesg' I get the following: (XEN) Cannot set CPU feature mask on CPU#0 (XEN) Cannot set CPU feature mask on CPU#1 (XEN) Cannot set CPU feature mask on CPU#2 (XEN) Cannot set CPU feature mask on CPU#3 (XEN) Cannot set CPU feature mask on CPU#4 (XEN) Cannot set CPU feature...