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[Xen-devel] Workaround for the corrupted Intel X48 DMAR table
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] Workaround for the corrupted Intel X48 DMAR table |
| From: | "Neo Jia" <neojia@xxxxxxxxx> |
| Date: | Sun, 13 Jul 2008 23:47:51 -0700 |
| Cc: | "Zhao, Yu" <yu.zhao@xxxxxxxxx>, "Han, Weidong" <weidong.han@xxxxxxxxx>, Jean Guyader <jean.guyader@xxxxxxxxxxxxx> |
| Delivery-date: | Sun, 13 Jul 2008 23:48:13 -0700 |
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hi, I am trying the Xen unstable on X48 chipset these days but it failed due to an corrupted RMRR table in the ACPI. The following is the acpi dump of DMAR. DMAR @ 0x7fef1000 0000: 44 4d 41 52 20 01 00 00 01 d1 49 4e 54 45 4c 20 DMAR .....INTEL 0010: 44 58 34 38 42 54 32 20 12 06 00 00 4d 53 46 54 DX48BT2 ....MSFT 0020: 13 00 00 01 23 00 00 00 00 00 00 00 00 00 00 00 ....#........... 0030: 00 00 18 00 00 00 00 00 00 00 b0 fe 00 00 00 00 ................ 0040: 01 08 00 00 00 00 1b 00 00 00 20 00 00 00 00 00 .......... ..... 0050: 00 10 b0 fe 00 00 00 00 01 08 00 00 00 00 02 00 ................ 0060: 01 08 00 00 00 00 02 01 00 00 28 00 00 00 00 00 ..........(..... 0070: 00 20 b0 fe 00 00 00 00 01 08 00 00 00 00 03 00 . .............. 0080: 01 08 00 00 00 00 03 02 01 08 00 00 00 00 03 03 ................ 0090: 00 00 10 00 01 00 00 00 00 30 b0 fe 00 00 00 00 .........0...... 00a0: 01 00 58 00 00 00 00 00 00 00 0e 00 00 00 00 00 ..X............. 00b0: ff ff 0e 00 00 00 00 00 01 08 00 00 00 00 1d 00 ................ 00c0: 01 08 00 00 00 00 1d 01 01 08 00 00 00 00 1d 02 ................ 00d0: 01 08 00 00 00 00 1d 07 01 08 00 00 00 00 1a 00 ................ 00e0: 01 08 00 00 00 00 1a 01 01 08 00 00 00 00 1a 02 ................ 00f0: 01 08 00 00 00 00 1a 07 01 00 28 00 00 00 00 00 ..........(..... 0100: 00 00 00 80 00 00 00 00 ff ff ff 7f 00 00 00 00 ................ 0110: 01 08 00 00 00 00 02 00 01 08 00 00 00 00 02 01 ................ In line: 0100: 00 00 00 80 00 00 00 00 ff ff ff 7f 00 00 00 00, the RMRR reserved memory region starting address is even higher than its limit address. Is there anyway to do a software workaround for this issue? I tried to simply ignore that entry in the "acpi_parse_one_rmrr" function, but I hit a panic in function "iommu_enable_translation". Thanks, Neo -- I would remember that if researchers were not ambitious probably today we haven't the technology we are using! _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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