Recent kernels, e.g. 2.6.29-rc7, assume ACPI 3 data structures without verifying the revision of e.g. the SRAT. Therefore machines with "old" SRAT cannot be configured correctly. E.g. the Proximity Domain in the Memory Affinity Structure has got different field length (1 vs. 4 bytes). Have you got a plan to determine at run time the ACPI version? Which was the last kernel supporting the ACPI 2? Thanks, Zoltan Menyhart -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html