On 10/8/07 12:36, "Stefan Berger" <stefanb@us.ibm.com> wrote:
(XEN) (1) Mapped 0xf601f to ff0f601f
(XEN) Using APIC driver default
(XEN) IN acpi_parse_fadt.
(XEN) (2) Mapped 0x3ffcfec0 to fff9bec0, base = 0xfff9b000
(XEN) ACPI: Invalid FADT signature A__ADR
This ‘A__ADR’ looks remarkably like the middle of another ACPI table. :-)
Perhaps you could scan all physical memory in the range 3ffcd000-3ffd0000, either via /dev/mem in native Linux, or hack some code to map-and-check within Xen, or whatever, and look for that string? It’d be interesting to know:
a) does it appear at all?
b) is it at the same offset in a page as we expect the fadt signature to appear (ie., offset 0xec0)?
c) is it in a page we mapped previously via __acpi_map_table()?
-- Keir