Hi Michael, Paolo, Now it is the time to return to the challenge that how to reserve guest physical region internally used by ACPI. Igor suggested that: | An alternative place to allocate reserve from could be high memory. | For pc we have "reserved-memory-end" which currently makes sure | that hotpluggable memory range isn't used by firmware (https://lists.nongnu.org/archive/html/qemu-devel/2015-11/msg00926.html) he also innovated a way to use 64-bit address in DSDT/SSDT.rev = 1: | when writing ASL one shall make sure that only XP supported | features are in global scope, which is evaluated when tables | are loaded and features of rev2 and higher are inside methods. | That way XP doesn't crash as far as it doesn't evaluate unsupported | opcode and one can guard those opcodes checking _REV object if neccesary. (https://lists.nongnu.org/archive/html/qemu-devel/2015-11/msg01010.html) Michael, Paolo, what do you think about these ideas? Thanks! -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html