I''m using
(XEN) Xen version 4.1.2 (Debian 4.1.2-2) (waldi at debian dot org)
(gcc version 4.6.2 (Debian 4.6.2-6) ) Sat Dec 10 19:58:21 UTC 2011
With VT-d enabled in BIOS the ACPI Direct Memory Access remapping
(DMAR) in the P6T Deluxe V2 (BIOS 1202, 2011/10/10) reports
RMRR (Reserved Memory Region Reporting Structure) is bf7dc000 -
bf7dbfff
e820 table:
0000000000000000 - 000000000009e400 (usable)
000000000009e400 - 00000000000a0000 (reserved)
00000000000e4c00 - 0000000000100000 (reserved)
0000000000100000 - 00000000bf780000 (usable)
00000000bf780000 - 00000000bf798000 (ACPI data)
00000000bf798000 - 00000000bf7dc000 (ACPI NVS)
00000000bf7dc000 - 00000000c0000000 (reserved) <== RMRR in
here
00000000fee00000 - 00000000fee01000 (reserved)
00000000ffe00000 - 0000000100000000 (reserved)
0000000100000000 - 00000001c0000000 (usable)
but Xen system log has:
(XEN) [VT-D]dmar.c:528: RMRR address range not in reserved
memory base = bf7dc000 end = bf7dbfff;
iommu_inclusive_mapping=1 parameter may be needed.
(XEN) [VT-D]dmar.c:585: The RMRR (bf7dc000, bf7dbfff) is
incorrect!
(XEN) Failed to parse ACPI DMAR. Disabling VT-d.
(XEN) Table is not found!
the log also has DMAR mentioned here:
(XEN) ACPI: DMAR BF7980C0, 0138 (r1 AMI OEMDMAR 1
MSFT 97)
although I don''t know what it means, or if it is relevant.
The iommu_inclusive_mapping parameter doesn''t help.
If I compile the latest version from source instead of using the
Debian repo will it help?
Is this still actually a problem with the latest BIOS? I''ll email
ASUS if it is ("good luck", I know...)
- Adam
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