RE: [Xen-devel] PCI Passthrough to HVM on xen-unstable

["Han, Weidong" <weidong.han@xxxxxxxxx>]

Yes, VT-d is located at North bridge, not a processor feature. On BIOS,
it should be under Chipset -> North Bridge settings. 

Randy

Jambunathan K wrote:
> Han, Weidong wrote:
>> Pls check your BIOS to see whether it's VT-d capable, and enable it
>> first if you want to use it. Seems your configures are correct, pls
>> check your BIOS.
> 
> I don't see an option for "Intel VT for Directed I/O" when "Intel
> Virtualization Technology" is enabled. My understanding is that VT-d
> is a motherboard feature and not a processor feature.
> 
> I have done some limited research looking around. I am confused
> whether I can get VT-d to work with just a BIOS upgrade or I would be
> required to upgrade my box altogther. If you have some info off the
> top of your head to clarify things for me, I would appreciate it.
> 
>> Jambunathan K wrote:
>>> (Resubmitting my original post with 'xm dmesg' output)
>>> 
>>> I am working on S5000VSA Intel Server Board with the following cpu
>>> spec. 
>>> 
>>> XEN-PEER-RHEL5 $ cat /proc/cpuinfo
>>> processor       : 0
>>> vendor_id       : GenuineIntel
>>> cpu family      : 6
>>> model           : 15
>>> model name      : Intel(R) Xeon(R) CPU           E5345  @ 2.33GHz
>>> stepping        : 7 cpu MHz         : 2327.512
>>> cache size      : 4096 KB
>>> physical id     : 0
>>> siblings        : 1
>>> core id         : 0
>>> cpu cores       : 1
>>> fpu             : yes
>>> fpu_exception   : yes
>>> cpuid level     : 10
>>> wp              : yes
>>> flags           : fpu de tsc msr pae mce cx8 apic sep mtrr mca cmov
>>> pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm
>>> constant_tsc up pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
>>> bogomips        : 4661.90 clflush size    : 64
>>> cache_alignment : 64
>>> address sizes   : 36 bits physical, 48 bits virtual
>>> power management:
>>> 
>>> Is my box vt-d capable? If the answer is yes proceed ahead to the
>>> details. If the answer is no, how can a novice user like me
>>> identify whether or not his box is vt-d capable.

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