KVM - virtualization support

[Sengottuvelan S]

Thanks All. I agreed.Currently my HW does not support it. I have ordered new
one.

On Thu, Dec 23, 2010 at 9:19 PM, Tapas Mishra <mightydreams at gmail.com>wrote:

>
>
> On Wed, Dec 22, 2010 at 1:17 PM, Robert P. J. Day <rpjday at crashcourse.ca>wrote:
>
>> On Tue, 21 Dec 2010, Sengottuvelan S wrote:
>>
>> > Hi All,
>> >
>> > I have below architecture. I assume it does not support KVM. Please
>> point me somone what
>> > is exactly needed to support KVM support in my machine?
>> >
>> > # egrep -c ' lm ' /proc/cpuinfo
>> > 2
>> > # uname -m
>> > x86_64
>> > # uname -a
>> > Linux ubuntu 2.6.32-24-generic #39-Ubuntu SMP Wed Jul 28 05:14:15 UTC
>> 2010 x86_64
>> > GNU/Linux
>> > and
>> >
>> > # cat /proc/cpuinfo
>> > processor : 0
>> > vendor_id : GenuineIntel
>> > cpu family : 6
>> > model  : 23
>> > model name : Intel(R) Core(TM)2 Duo CPU     E7200  @ 2.53GHz
>>
>>  why not just go straight to the source and check:
>>
>>  http://ark.intel.com/VTList.aspx
>>
>> that list clearly seems to suggest that the core 2 duo does *not* have
>> virt support.
>>
> That is correct Sengottuvelan S I checked on that link your machine doest
> not support vt so the hardware does not support Virtualization but that just
> means that a hypervisor which needs hardware support i.e. vmx instruction
> set will not run in your case KVM.
> But you can use Xen,QEMU,Virtualbox or VMware also.
> If you have some specific work or project then that means you need to get
> another machine.
> In  otherwise case use something other than KVM.
> Xen might be a bit difficult for you to setup on Ubuntu but if you use
> CentOS things should work perfectly.
> CentOS is RHEL but with proprietary softwares and logo of Red Hat removed.
> I hope I answered what you wanted to know.
> The kernel has nothing to do with hardware support.(Correct me if I am
> wrong)
> It is the hypervisor which needs support from your cpu in terms of
> instruction set.
>
> On the same hardware that you have you can give a shot to xen (again if you
> use CentOS it has a GUI and Xen is shipped on its DVD image
> precompiled).That way you can do give a try to things that you need.
> On some places on internet you may get vmware images of Linux preinstalled
> you can download them and vmware player is freely available from the
> official site.
> That way you can run your virtual machine.
> As far as this hardware is concerned  currently you will not be able to run
> KVM on it as you
> /proc/cpuinfo output also says clearly
> see the following
>
>  On Wed, Dec 22, 2010 at 7:13 AM, Sengottuvelan S <
> sengottuvelan.s at gmail.com> wrote:
>
>>   model name : Intel(R) Core(TM)2 Duo CPU     E7200  @ 2.53GHz
>>  flags  : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
>> pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
>> constant
>> _tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl
>> est tm2
>>  ssse3 cx16 xtpr pdcm sse4_1 lahf_lm
>>
>
> here I do not see vmx flag,lm flag is there in above output which means it
> supports 64 bit,but due to vmx absent you can not run a hypervisor which
> needs vmx support to run.
> Presence of vmx instruction set means a hypervisor which exclusively
> depends upon this instruction set will be able to run.In your case KVM
> depends.
> The options of BIOS will not help as Roberts Link points it.
>
> "Your CPU E7200 does not support vt."
> This means a hypervisor which needs vmx instruction set to run will not be
> able to run,but there are other hypervisors
> or in laymans term virtualization solution which would still run
> irrespective of hardware supporting vt.
>
> Kernel has not any thing to do to support KVM.
> When your hypervisor is running then it passes on specific instruction set
> to the CPU.
> In old days when vmx support was not available and Virtualization was just
> evolving,
> people used to run Virtual machines ( I am aware of someone  doing such
> stuff a few decades back) using the same instruction set which is found on
> normal desktops.
>
> So KVM will not run currently (not because of kernel,but because of
> hardware support) on your machine.
> I hope the list answered your question.
> --
> http://mightydreams.blogspot.com
>
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>


-- 
Regards,
S. Sengottuvelan.
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