[vfio-users] Asus P6T Deluxe unofficial BIOS

[Marco Stagge]

Hey,

thanks for your answer, atm im checking my dmesg for that entry .. i've
found this so far^^

[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009d3ff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009d400-0x000000000009ffff]
reserved
[    0.000000] BIOS-e820: [mem 0x00000000000e4c00-0x00000000000fffff]
reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000bf77ffff] usable
[    0.000000] BIOS-e820: [mem 0x00000000bf780000-0x00000000bf797fff] ACPI
data
[    0.000000] BIOS-e820: [mem 0x00000000bf798000-0x00000000bf7dbfff] ACPI
NVS
[    0.000000] BIOS-e820: [mem 0x00000000bf7dc000-0x00000000bfffffff]
reserved
[    0.000000] BIOS-e820: [mem 0x00000000fee00000-0x00000000fee00fff]
reserved
[    0.000000] BIOS-e820: [mem 0x00000000ffe00000-0x00000000ffffffff]
reserved
[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000063fffffff] usable
[    0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.000000] e820: last_pfn = 0x640000 max_arch_pfn = 0x400000000
[    0.000000] e820: update [mem 0xbf800000-0xffffffff] usable ==> reserved
[    0.000000] e820: last_pfn = 0xbf780 max_arch_pfn = 0x400000000
[    0.000000] e820: [mem 0xc0000000-0xfedfffff] available for PCI devices
[    0.554189] e820: reserve RAM buffer [mem 0x0009d400-0x0009ffff]
[    0.554190] e820: reserve RAM buffer [mem 0xbf780000-0xbfffffff]

the interesting part(for me) is that "available for PCI devices" mem ... so
at this point all infos about pcidevices are stored in this mem area?

if i grep around for "mem" there is a lot infos ... hmm .... well, i'll
attach my dmesg in this mail(hope thats possible)
maybe there is someone who figure some areas out, i'll test it and report
back then :)

...and i found something new lol :D

ACPI: DMAR 0x00000000BF7980C0 000138 (v01 AMI    OEMDMAR  00000001 MSFT
00000097)

but, i dont know what this output should tell me?^^


hmmm maybe this could help

[    0.090460] dmar: Host address width 39
[    0.090509] dmar: DRHD base: 0x000000fbfff000 flags: 0x0
[    0.090566] dmar: IOMMU 0: reg_base_addr fbfff000 ver 1:0 cap
c9008010e60262 ecap f0207a
[    0.090629] dmar: DRHD base: 0x000000fbffe000 flags: 0x1
[    0.090680] dmar: IOMMU 1: reg_base_addr fbffe000 ver 1:0 cap
c90780106f0462 ecap f020fe
[    0.090742] dmar: RMRR base: 0x000000000ec000 end: 0x000000000effff
[    0.090790] dmar: RMRR base: 0x000000bf7dc000 end: 0x000000bf7dbfff
[    0.090838] dmar: ATSR flags: 0x0



btw i wonder why, the xeon(vt-d supported) is not able to override the vt-d
tables from the motherboard or something like that

maybe its blocked by bios?




2016-09-02 15:36 GMT+02:00 rob e <redgerhoo at yahoo.com.au>:

> 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> <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> <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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