On Wed, Jul 14, 2010 at 1:49 PM, Dominik Zyla <gavroche at gavroche.pl> wrote: > On Wed, Jul 14, 2010 at 12:32:12PM -0500, David Dyer-Bennet wrote: >> I'm installing Centos 5.5 on a new Dell R301 server. I wanted to run Xen >> and have the full virtualization possibilities (this is our development >> support server, so it runs a few real services and is available for >> playing with things; putting the "playing with things" functions into >> virtual servers would protect the "few real services", and make it easier >> to clean up afterwards). >> >> I have enabled virtualization support in the BIOS. >> >> /proc/cpuinfo says I have >> model name : Intel(R) Xeon(R) CPU X3450 @ 2.67GHz >> >> and >> >> flags : fpu tsc msr pae cx8 apic mtrr cmov pat clflush acpi mmx >> fxsr sse sse2 ss ht syscall nx lm constant_tsc ida pni est ssse3 cx16 >> sse4_1 sse4_2 popcnt lahf_lm >> >> The "vmx" flag doesn't appear to be set. >> >> (I'm working from >> <http://www.centos.org/docs/5/html/Virtualization-en-US/ch-op-sys-support.html>, >> by the way; I note that document is from 2007 or maybe even 2006, so >> perhaps some things aren't fully up-to-date.) >> >> So, does that mean my Xeon-based server doesn't have hardware >> virtualization assistance? > > It loks like X3450 has no VMX instructions. > > -- > Dominik Zyla You might need to go into the BIOS and enable VT extensions. Many systems ship with them disabled.