[vfio-users] Asus P6T Deluxe unofficial BIOS

[rob e]

On 31/08/16 02:00, vfio-users-request at redhat.com wrote:
> Date: Tue, 30 Aug 2016 11:52:18 +0200
> From: Marco Stagge <spiritblackdiamont at gmail.com>
> To: vfio-users at redhat.com
> Subject: [vfio-users] Asus P6T Deluxe unofficial BIOS
> Message-ID:
> 	<CADKDhYex84ArCOctnErAK0sED0hPsCGJ5tEf3UJsz+01yLGCZQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hey there,
>
> i've got two Boards, Asus P6T Deluxe and non-Deluxe Version. Ive running a
> Xeon X5650 on it, but
> VT-d is routed through bios(dmesg told me), and the DMAR-Table is broken.
> On the xen page i've found this "ASUS P6T Deluxe (Intel X58 chipset)
> requires (currently non-public) BIOS update to correct DMAR-table issue".
>
> Does anyone know if there is a unofficial bios with corrected DMAR-Table?
> google is not my friend^^
> didnt find anything useful :(
>
> greet Spirit
>
I have the same motherboard and also sought that bios, without success. 
There is however someone else who may have tried it
https://bbs.archlinux.org/viewtopic.php?pid=1487138#p1487138
See Alex's response suggesting use of

|memmap=nn[KMG]$ss[KMG] [KNL,ACPI] Mark specific memory as reserved. 
Region of memory to be reserved is from ss to ss+nn. Example: Exclude 
memory from 0x18690000-0x1869ffff memmap=64K$0x18690000 or 
memmap=0x10000$0x18690000|

I haven't tried this myself so would be interested in your feedback :)
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