Re: collecting info on platforms with VT-d BIOS problems

[Christian Tramnitz <chris.ace@gmx.net>]

Hi Allen,

thanks for taking care of this!
You may already know those two (we have been in contact regarding the 
P6T before, you provided me a beta bios that worked around this):


1)
(a) Asus P6T Deluxe
(b) all (except you provided beta BIOS) including latest 1904
(c) all (even with iommu_include_reserved)
(d) xm dmesg shows:
(XEN) Command line: dom0_mem=1024M iommu=1 iommu_include_reserved=1
...
(XEN) [VT-D]dmar.c:473: Host address width 39
(XEN) [VT-D]dmar.c:482: found ACPI_DMAR_DRHD
(XEN) [VT-D]dmar.c:337: dmaru->address = fbfff000
(XEN) [VT-D]dmar.c:288: found endpoint: bdf = 0:1b.0
(XEN) [VT-D]dmar.c:482: found ACPI_DMAR_DRHD
(XEN) [VT-D]dmar.c:337: dmaru->address = fbffe000
(XEN) [VT-D]dmar.c:294: found IOAPIC: bdf = f0:1f.7
(XEN) [VT-D]dmar.c:294: found IOAPIC: bdf = 0:13.0
(XEN) [VT-D]dmar.c:346: found INCLUDE_ALL
(XEN) [VT-D]dmar.c:486: found ACPI_DMAR_RMRR
(XEN) [VT-D]dmar.c:288: found endpoint: bdf = 0:1d.0
(XEN) [VT-D]dmar.c:288: found endpoint: bdf = 0:1d.1
(XEN) [VT-D]dmar.c:288: found endpoint: bdf = 0:1d.2
(XEN) [VT-D]dmar.c:288: found endpoint: bdf = 0:1d.7
(XEN) [VT-D]dmar.c:288: found endpoint: bdf = 0:1a.0
(XEN) [VT-D]dmar.c:288: found endpoint: bdf = 0:1a.1
(XEN) [VT-D]dmar.c:288: found endpoint: bdf = 0:1a.2
(XEN) [VT-D]dmar.c:288: found endpoint: bdf = 0:1a.7
(XEN) [VT-D]dmar.c:486: found ACPI_DMAR_RMRR
(XEN) [VT-D]dmar.c:376: RMRR error: base_addr bf7dc000 end_address bf7dbfff
(XEN) Failed to parse ACPI DMAR.  Disabling VT-d.



2)
(a) Asus P5E-VM DO
(b) 0702 (latest)
(c) all (even with iommu_include_reserved)
(d) as soon as the IGD is disabled in the BIOS "xm dmesg" shows:
(XEN) ACPI: HPET id: 0xffffffff base: 0xfed00000
(XEN) [VT-D]dmar.c:485: Host address width 36
(XEN) [VT-D]dmar.c:494: found ACPI_DMAR_DRHD
(XEN) [VT-D]dmar.c:349: dmaru->address = fed90000
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1b.0
(XEN) [VT-D]dmar.c:494: found ACPI_DMAR_DRHD
(XEN) [VT-D]dmar.c:349: dmaru->address = fed92000
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:3.0
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:3.2
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:3.3
(XEN) [VT-D]dmar.c:494: found ACPI_DMAR_DRHD
(XEN) [VT-D]dmar.c:349: dmaru->address = fed93000
(XEN) [VT-D]dmar.c:358: found INCLUDE_ALL
(XEN) [VT-D]dmar.c:498: found ACPI_DMAR_RMRR
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1d.0
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1d.1
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1d.2
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1d.7
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1a.0
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1a.1
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1a.2
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1a.7
(XEN) [VT-D]dmar.c:498: found ACPI_DMAR_RMRR
(XEN) [VT-D]dmar.c:388: RMRR error: base_addr d0000000 end_address cfffffff
(XEN) Failed to parse ACPI DMAR.  Disabling VT-d.