Re: [Xen-devel] Fwd: RMRR is incorrect (was: VT-d does not work any more after BIOS update on DQ35MP)

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 25/11/08 10:10, "Ralf Hornik Mailings" <ralf@xxxxxxxxxxxxxxxxx> wrote:

> Now, after recompiling xen version 3.3 (make dist) I get the following
> error in "xm dmesg":
> 
> ...
> (XEN) Xen heap: 14MB (14720kB)
> (XEN) Domain heap initialised
> (XEN) Processor #0 6:15 APIC version 20
> (XEN) Processor #2 6:15 APIC version 20
> (XEN) Processor #1 6:15 APIC version 20
> (XEN) Processor #3 6:15 APIC version 20
> (XEN) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
> (XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
> (XEN) [VT-D]dmar.c:354: RMRR is incorrect.
> (XEN) Failed to parse ACPI DMAR.  Disabling VT-d.
> (XEN) Using scheduler: SMP Credit Scheduler (credit)
> (XEN) Detected 2388.018 MHz processor.
> ...
> 
> So wthat does this error mean?

Xen failed to parse one of your BIOS's information tables. However, the
table relates to Intel's VT-d feature which you are almost certainly not
using.

 -- Keir



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