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Thread: GA-890FXA-UD5 IOMMU BIOS Switch?




  1. #21
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    Default Re: GA-890FXA-UD5 IOMMU BIOS Switch?

    Quote Originally Posted by joro80 View Post
    Can you also send me your full dmesg and lscpi output so I can see what the BIOS enables for the OS?

    Thanks.
    Code:
    #xm dmesg
     __  __            _  _    ___   ___  
     \ \/ /___ _ __   | || |  / _ \ / _ \ 
      \  // _ \ '_ \  | || |_| | | | | | |
      /  \  __/ | | | |__   _| |_| | |_| |
     /_/\_\___|_| |_|    |_|(_)___(_)___/ 
                                          
    (XEN) Xen version 4.0.0 (@(none)) (gcc version 4.3.4 (Gentoo 4.3.4 p1.1, pie-10.1.5) ) Mon May 17 21:51:45 CDT 2010
    (XEN) Latest ChangeSet: unavailable
    (XEN) Command line: iommu=verbose
    (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 2 MBR signatures
    (XEN)  Found 2 EDD information structures
    (XEN) Xen-e820 RAM map:
    (XEN)  0000000000000000 - 000000000009f000 (usable)
    (XEN)  000000000009f000 - 00000000000a0000 (reserved)
    (XEN)  00000000000e4000 - 0000000000100000 (reserved)
    (XEN)  0000000000100000 - 00000000c7f90000 (usable)
    (XEN)  00000000c7f90000 - 00000000c7f9e000 (ACPI data)
    (XEN)  00000000c7f9e000 - 00000000c7fe0000 (ACPI NVS)
    (XEN)  00000000c7fe0000 - 00000000c8000000 (reserved)
    (XEN)  00000000ffe00000 - 0000000100000000 (reserved)
    (XEN)  0000000100000000 - 0000000238000000 (usable)
    (XEN) ACPI: RSDP 000FB6A0, 0014 (r0 ACPIAM)
    (XEN) ACPI: RSDT C7F90000, 0044 (r1 MSI    OEMSLIC  20100518 MSFT       97)
    (XEN) ACPI: FACP C7F90200, 0084 (r1 7640MS A7640100 20100518 MSFT       97)
    (XEN) ACPI: DSDT C7F905E0, 9F32 (r1  A7640 A7640100      100 INTL 20051117)
    (XEN) ACPI: FACS C7F9E000, 0040
    (XEN) ACPI: APIC C7F90390, 0088 (r1 7640MS A7640100 20100518 MSFT       97)
    (XEN) ACPI: MCFG C7F90420, 003C (r1 7640MS OEMMCFG  20100518 MSFT       97)
    (XEN) ACPI: SLIC C7F90460, 0176 (r1 MSI    OEMSLIC  20100518 MSFT       97)
    (XEN) ACPI: OEMB C7F9E040, 0072 (r1 7640MS A7640100 20100518 MSFT       97)
    (XEN) ACPI: SRAT C7F9A5E0, 0108 (r3 AMD    FAM_F_10        2 AMD         1)
    (XEN) ACPI: HPET C7F9A6F0, 0038 (r1 7640MS OEMHPET  20100518 MSFT       97)
    (XEN) ACPI: SSDT C7F9A730, 0DA4 (r1 A M I  POWERNOW        1 AMD         1)
    (XEN) System RAM: 8175MB (8372060kB)
    (XEN) Domain heap initialised
    (XEN) Processor #0 0:10 APIC version 16
    (XEN) Processor #1 0:10 APIC version 16
    (XEN) Processor #2 0:10 APIC version 16
    (XEN) Processor #3 0:10 APIC version 16
    (XEN) Processor #4 0:10 APIC version 16
    (XEN) Processor #5 0:10 APIC version 16
    (XEN) IOAPIC[0]: apic_id 6, version 33, address 0xfec00000, GSI 0-23
    (XEN) IOAPIC[1]: apic_id 7, version 33, address 0xfec20000, GSI 24-55
    (XEN) Enabling APIC mode:  Flat.  Using 2 I/O APICs
    (XEN) Using scheduler: SMP Credit Scheduler (credit)
    (XEN) Detected 3200.170 MHz processor.
    (XEN) Initing memory sharing.
    (XEN) HVM: ASIDs enabled.
    (XEN) HVM: SVM enabled
    (XEN) HVM: Hardware Assisted Paging detected.
    (XEN) AMD-Vi: IOMMU not found!
    (XEN) I/O virtualisation disabled
    (XEN) Total of 6 processors activated.
    (XEN) ENABLING IO-APIC IRQs
    (XEN)  -> Using new ACK method
    (XEN) TSC is reliable, synchronization unnecessary
    (XEN) Platform timer is 14.318MHz HPET
    (XEN) Brought up 6 CPUs
    (XEN) *** LOADING DOMAIN 0 ***
    (XEN)  Xen  kernel: 64-bit, lsb, compat32
    (XEN)  Dom0 kernel: 64-bit, lsb, paddr 0x1000000 -> 0x16be000
    (XEN) PHYSICAL MEMORY ARRANGEMENT:
    (XEN)  Dom0 alloc.:   0000000230000000->0000000232000000 (2031119 pages to be allocated)
    (XEN) VIRTUAL MEMORY ARRANGEMENT:
    (XEN)  Loaded kernel: ffffffff81000000->ffffffff816be000
    (XEN)  Init. ramdisk: ffffffff816be000->ffffffff816be000
    (XEN)  Phys-Mach map: ffffea0000000000->ffffea0000f8f078
    (XEN)  Start info:    ffffffff816be000->ffffffff816be4b4
    (XEN)  Page tables:   ffffffff816bf000->ffffffff816ce000
    (XEN)  Boot stack:    ffffffff816ce000->ffffffff816cf000
    (XEN)  TOTAL:         ffffffff80000000->ffffffff81800000
    (XEN)  ENTRY ADDRESS: ffffffff81000000
    (XEN) Dom0 has maximum 6 VCPUs
    (XEN) Scrubbing Free RAM: .done.
    (XEN) Xen trace buffers: disabled
    (XEN) Std. Loglevel: Errors and warnings
    (XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
    (XEN) Xen is relinquishing VGA console.
    (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to Xen)
    (XEN) Freed 164kB init memory.
    Attachment 2580

  2. #22
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    Default Re: GA-890FXA-UD5 IOMMU BIOS Switch?

    Quote Originally Posted by jdma View Post
    Code:
    (XEN) ACPI: RSDP 000FB6A0, 0014 (r0 ACPIAM)
    (XEN) ACPI: RSDT C7F90000, 0044 (r1 MSI    OEMSLIC  20100518 MSFT       97)
    (XEN) ACPI: FACP C7F90200, 0084 (r1 7640MS A7640100 20100518 MSFT       97)
    (XEN) ACPI: DSDT C7F905E0, 9F32 (r1  A7640 A7640100      100 INTL 20051117)
    (XEN) ACPI: FACS C7F9E000, 0040
    (XEN) ACPI: APIC C7F90390, 0088 (r1 7640MS A7640100 20100518 MSFT       97)
    (XEN) ACPI: MCFG C7F90420, 003C (r1 7640MS OEMMCFG  20100518 MSFT       97)
    (XEN) ACPI: SLIC C7F90460, 0176 (r1 MSI    OEMSLIC  20100518 MSFT       97)
    (XEN) ACPI: OEMB C7F9E040, 0072 (r1 7640MS A7640100 20100518 MSFT       97)
    (XEN) ACPI: SRAT C7F9A5E0, 0108 (r3 AMD    FAM_F_10        2 AMD         1)
    (XEN) ACPI: HPET C7F9A6F0, 0038 (r1 7640MS OEMHPET  20100518 MSFT       97)
    (XEN) ACPI: SSDT C7F9A730, 0DA4 (r1 A M I  POWERNOW        1 AMD         1)
    Attachment 2580
    Ok, no IVRS table and also no IOMMU device in lspci showing up. IOMMU is definitly disabled on this board. Thanks, for the info.

  3. #23
    Lsdmeasap's Avatar
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    Default Re: GA-890FXA-UD5 IOMMU BIOS Switch?

    Have you guys sent in a report on this directly to Taiwan?
    http://www.gigabyte.com.tw/Support/ServiceCenter.aspx

    Just wondering as they may not be aware of the issue, sorry I haven't looked back through the thread to see if you already have or not.

    Once Computex is over I will try to get someone there to look into this for you guys if no one there isn't already.

  4. #24
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    Default Re: GA-890FXA-UD5 IOMMU BIOS Switch?

    Quote Originally Posted by Lsdmeasap View Post
    ...
    Just wondering as they may not be aware of the issue, sorry I haven't looked back through the thread to see if you already have or not.
    ...
    I submitted a ticket on Friday, 28th of May... so far the status is "the mail will be processed". If they don't open it/reply by Friday of this week, I will resubmit the ticket again.

    I still can't find "official" word that the 890FX really supports IOMMU. No official word from AMD, but I see lots of block diagrams from AMD that have IOMMU written on it. One finds if you look up AMD 890FX Chipset [1] on AMD's website, they don't spec IOMMU. But yet lots of reviewers say that it should have it... so which is it? Lots of mailing lists, reviews of motherboards and other fourms do say this chipset should have IOMMU... so I'm a bit confused.

    [1] - AMD 890FX Chipset

  5. #25
    Lsdmeasap's Avatar
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    Default Re: GA-890FXA-UD5 IOMMU BIOS Switch?

    It may just be something they have not fully worked out yet so it is not in the current BIOSes is all.

    I will let you know what I can find out, hopefully by next week I should know something

  6. #26
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    Default Re: GA-890FXA-UD5 IOMMU BIOS Switch?

    Quote Originally Posted by Lsdmeasap View Post
    ...
    I will let you know what I can find out, hopefully by next week I should know something
    Thank you very much for trying to find out what's going on with this, it certainly feels like a mystery.

  7. #27
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    Default Re: GA-890FXA-UD5 IOMMU BIOS Switch?

    Quote Originally Posted by Lsdmeasap View Post
    It may just be something they have not fully worked out yet so it is not in the current BIOSes is all.

    I will let you know what I can find out, hopefully by next week I should know something
    The GA-X58A-UD7 (from your signature) has an Intel X58 chipset.
    That chipset is capable of IOMMU (or VT-d), does your BIOS implement IOMMU?

    If not, I think Gigabyte doesn't want to implement it.
    If yes, probably they have some problems with AMD implementation.

  8. #28
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    Default Re: GA-890FXA-UD5 IOMMU BIOS Switch?

    Well, Gigabyte technical support finally replied back...

    "Dear Customer

    Unfortunately the feature is not supported on this board"

    I guess that answers that... ):
    Not much detail on why or even recommendations for what board they have that has IOMMU enabled. I'm really not too happy with that answer.
    But what does this really mean? That the board isn't wired for IOMMU, or they are just not going to support IOMMU even if the board is fully capable of supporting it? Does anyone know how I can tell if this chipset has the ability for IOMMU and they just turned it off/locked it?

  9. #29
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    Default Re: GA-890FXA-UD5 IOMMU BIOS Switch?

    Quote Originally Posted by kuzew View Post
    I still can't find "official" word that the 890FX really supports IOMMU. No official word from AMD, but I see lots of block diagrams from AMD that have IOMMU written on it. One finds if you look up AMD 890FX Chipset [1] on AMD's website, they don't spec IOMMU. But yet lots of reviewers say that it should have it... so which is it? Lots of mailing lists, reviews of motherboards and other fourms do say this chipset should have IOMMU... so I'm a bit confused.
    I emailed AMD a few days ago to ask because I have read a lot of conflicting information on this subject:
    Thank you for contacting AMD. I would like to verify for you that yes, the 890FX chipset does offer the IOMMU feature, however you will want to keep in mind that manufacturers can decide to enable or disable this feature through the BIOS and therefore you will want to verify with manufacturer of your specific board. But in short, yes it does offer the ability to do so.

  10. #30
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    Default Re: GA-890FXA-UD5 IOMMU BIOS Switch?

    Oh that is most excellent news! I wonder why they don't have it listed in the features/specs of the chipset...

    Well, because porting coreboot to this motherboard would be too much... and I've attempted to disassemble the existing BIOS and failed (I got mostly garbage... didn't look into it further, might be some compression thing they do). I'm now looking into returning my Gigabyte motherboard to Newegg and start to look for a motherboard that has IOMMU enabled in the BIOS. It looks like Gigabyte won't be enabling that feature anytime soon, unless Lsdmeasap finds some information otherwise. I suppose I'll wait around until then.

    Thanks jdma for sharing that information. Cheers!

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