3 Replies Latest reply on Dec 29, 2011 10:54 AM by klabacita

    Xeon E5649 I/O Virtualization Support?

    klabacita

      Hi.

       

      Does this chip support I/O Virtualization?

       

      Have some one here using this feature with this chip?

       

      Im using Xen.

       

      Thanks!!!

        • 1. Re: Xeon E5649 I/O Virtualization Support?
          Adolfo_Intel

          According to the following website, this processor support only (VT-x) but not (VT-d).

          http://ark.intel.com/products/52581/Intel-Xeon-Processor-E5649-(12M-Cache-2_53-GHz-5_86-GTs-Intel-QPI)

          • 2. Re: Xeon E5649 I/O Virtualization Support?
            klabacita

            Just a update.

             

            There is been a lot of forums that say that chip manufactures don't update their docs about what features their products have.

             

            I speak by chat with a technical guy from Intel about this same question:

             

            Do this chip support vt-d?, he check the same web page u point me Adolfo_Intel(appreciated your time for aswering) and the say answer "No".

             

            Well, reading xen maillist I found same person saying that he have some 5600 chips with vt-d enable.

             

            Them I decide to enable and see what happen:

             

            (XEN) Xen version 3.4.3 (root@gitco.tld) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-50)) Sun Jun 19 13:52:00 CEST 2011

            (XEN) Latest ChangeSet: unavailable
            (XEN) Command line: dom0_max_vcpus=2 dom0_vcpus_pin dom0_mem=1024MB iommu=1
            (XEN) Video information:
            (XEN)  VGA is text mode 80x25, font 8x16
            (XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds
            (XEN) Disc information:
            (XEN)  Found 6 MBR signatures
            (XEN)  Found 6 EDD information structures
            (XEN) Xen-e820 RAM map:
            ...
            (XEN) IOAPIC[0]: apic_id 6, version 32, address 0xfec00000, GSI 0-23
            (XEN) Enabling APIC mode:  Phys.  Using 1 I/O APICs
            (XEN) Intel VT-d DMAR tables have been parsed.
            (XEN) Using scheduler: SMP Credit Scheduler (credit)
            (XEN) Detected 2533.430 MHz processor.
            (XEN) VMX: Supported advanced features:
            (XEN)  - APIC MMIO access virtualisation
            (XEN)  - APIC TPR shadow
            (XEN)  - Extended Page Tables (EPT)
            (XEN)  - Virtual-Processor Identifiers (VPID)
            (XEN)  - Virtual NMI
            (XEN)  - MSR direct-access bitmap
            (XEN) VMX: EPT is available.
            (XEN) VMX: VPID is available.
            (XEN) HVM: VMX enabled
            (XEN) HVM: Hardware Assisted Paging detected.
            ...
            (XEN) Intel VT-d Snoop Control supported.
            (XEN) Intel VT-d DMA Passthrough not supported.
            (XEN) Intel VT-d Queued Invalidation supported.
            (XEN) Intel VT-d Interrupt Remapping not supported.
            (XEN) I/O virtualisation enabled
            (XEN) I/O virtualisation for PV guests disabled

             

            I just need to verify if this works, but this is good news, I had read other forums and people with this same message:

             

            (XEN) Intel VT-d DMA Passthrough not supported.

             

            And they could pass some devices to ther HVM, I will give more details once I test my win2k3 machine.

             

            Thanks!!!

            • 3. Re: Xeon E5649 I/O Virtualization Support?
              klabacita

              Hi I had back.

               

              Sucessfully could pass my USB port to my HVM running windows xp pro, the same behaviour as other MoBo, It just support USB 1.1, but for what I need is good.

               

              MoBo: SuperServer 5026T-TB

               

              U had to enable the vt-d optio into the BIOS, xen 3.4.3 from gitco, u have to enable the kernel before:

               

              kernel /xen.gz-3.4.3 dom0_max_vcpus=2 dom0_vcpus_pin dom0_mem=1024MB iommu=1

               

              I would try windows 2k3 and win 7 and let u know.

               

              Again, lack of info from Intel, see u!!!