[OT] intel E5420 + tyan i5100x != virtualization

[Gilboa Davara]

On Tue, 2008-11-18 at 09:43 -0500, Neal Becker wrote:
> I put together a new MB, with 2 xeon E5420 and tyan i5100x MB.  On BIOS (advanced/cpu) 'virtualization technology' says 'enabled'.  But, not vmx bit, and ideas?
> 
> 
> processor       : 7
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 23
> model name      : Intel(R) Xeon(R) CPU           E5420  @ 2.50GHz
> stepping        : 10
> cpu MHz         : 2493.747
> cache size      : 6144 KB
> physical id     : 1
> siblings        : 4
> core id         : 3
> cpu cores       : 4
> apicid          : 7
> initial apicid  : 7
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dtsacpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni tm2ssse3 lahf_lm
> bogomips        : 4987.53
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 38 bits physical, 48 bits virtual
> power management:
> 

I'm using a newer i5400XT board with E5335 CPUs on one workstation, and
E5440 on the other.

$ echo CPU: $(cat /proc/cpuinfo | grep Xeon | uniq), CPU VT ext: $(cat /proc/cpuinfo | grep -o vmx | wc -l) cores.
CPU: model name : Intel(R) Xeon(R) CPU E5335 @ 2.00GHz, CPU VT ext: 8 cores.

$ echo CPU: $(cat /proc/cpuinfo | grep Xeon | uniq), CPU VT ext: $(cat /proc/cpuinfo | grep -o vmx | wc -l) cores.
CPU: model name : Intel(R) Xeon(R) CPU E5440 @ 2.83GHz, CPU VT ext: 8 cores.

qemu-kvm is working just fine on both.
Must likely your BIOS fails to detect/enable the VT extension on your
54xx CPUs.

Have you looked for an updated BIOS in tyan.com?

- Gilboa