Re: [Xen-devel] RE: [Xen-changelog] [xen-unstable]vt-d: Fixpanic in msi_msg_read_remap_rte with acpi=off

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 19/10/2009 15:18, "Cui, Dexuan" <dexuan.cui@xxxxxxxxx> wrote:

>> So sorry about that. I'll revert Dexuan's patch.
>> 
>>  -- Keir
> 
> But, can't you reproduce the crash I mentioned before?
> Please see the attached crash log -- I'm using c/s 20341:ea34183c5c11 and with
> "iommu=1 acpi=off" and I use a DQ35 host.
> 
> Actually what I care is the " if ( acpi_disabled ) iommu_enabled = 0".

Does this really save you though? What if you specify just "iommu=1" on an
ACPI system that doesn't have VT-d (and therefore declares no DHRD units)?

 -- Keir



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