Should still apply on latest Linux tree, I can resubmit if not. Would be great if hpa can push this into a x86 branch to get this into linux-next and into Linus' tree with the next merge window. Thanks, Thomas Dmesg output of a quick test: FACP ACPI table found in initrd [kernel/firmware/acpi/facp.aml][0xf4] DSDT ACPI table found in initrd [kernel/firmware/acpi/dsdt.aml][0x333c] e820: modified physical RAM map: ... modified: [mem 0x00000000f7fec000-0x00000000f7fef42f] ACPI data ... Disabling lock debugging due to kernel taint ACPI: Override [FACP-OEMFACP ], this is unsafe: tainting kernel ACPI: FACP 00000000f7ff0281 Physical table override, new table: ffffffffff4b7000 ACPI: FACP 00000000f7fec000 000F4 (v03 A M I OEMFACP 08000713 INTL 20120518) ACPI: Override [DSDT-0AAAA001], this is unsafe: tainting kernel ACPI: DSDT 00000000f7ff0410 Physical table override, new table: ffffffffff4b70f4 ACPI: DSDT 00000000f7fec0f4 0333C (v01 0AAAA 0AAAA001 00000001 INTL 20120518) -- 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