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/proc/cpuinfo doesn show vmx flag on intel e8500
This is a discussion on /proc/cpuinfo doesn show vmx flag on intel e8500 within the XEN forums, part of the Linux virtualization category; Hi, Ive just setup and installed centos (xen kernel) on my new intel e8500 based sytem. As far as i ...
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12-02-2009, 03:58 PM
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/proc/cpuinfo doesn show vmx flag on intel e8500
Hi,
Ive just setup and installed centos (xen kernel) on my new intel e8500 based sytem. As far as i know this processor should support VMX flag? But when I do a "cat /proc/cpuinfo" i get: Code:
processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 CPU E8500 @ 3.16GHz stepping : 10 cpu MHz : 3800.082 cache size : 6144 KB physical id : 1 siblings : 1 core id : 0 cpu cores : 1 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu tsc msr pae mce cx8 apic mtrr mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor tm2 lahf_lm bogomips : 9504.57 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: and uname -a: Code:
Linux ubuntu 2.6.18-92.1.22.el5xen #1 SMP Tue Dec 16 12:26:32 EST 2008 x86_64 x86_64 x86_64 GNU/Linux Code:
Error: HVM guest support is unavailable: is VT/AMD-V supported by your CPU and enabled in your BIOS? I feel like im making a simple mistake here  , I would be most grateful if someone could point me in the right direction?Thanks, Will. 
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12-02-2009, 11:56 PM
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Intel VT support can be verified by the 'vmx' flag and it is available on your system. But most vendor disables VT in BIOS. To see if it is enabled, check for the 'hvm-xxx' flags in the hypervisor capability set by running the following
Code:
cat /sys/hypervisor/properties/capabilities Also, keep in mind some motherboard do not support VT. It is also depends upon your motherboard. Some motherboard needs updated BIOS...
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Last edited by nixcraft; 12-02-2009 at 11:59 PM.
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13-02-2009, 12:57 AM
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Thanks for your response, after thoroughly checking the bios setting and not finding anything to do with VT I checked out motherboard bios update page and found the version i was using didn't fully support the wolfdale processor, doh!. A quick bios update later I was sorted.
Thanks for the help! Cheers, Will.
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| intel vt , virtualization , vmx flag , xen |
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