Hi,
The values for the pci i/o windows are passed in a different way now. It used to be a reference to seabios-allocated memory (BDAT) with the location of that memory being added to the ssdt. Now that indirection is gone and seabios generates ssdt fields directly. The later makes it easier to generate the ssdt tables in qemu instead.
cheers, Gerd
Ah so dsdt in qemu and ssdt in seabios conflict?
dsdt + ssdt must match, and when using the qemu prebuild dsdt (older than commit 76e58028d28e78431f9de3cee0b3c88d807fa39d, thus expecting a old-style ssdt) and a fresh seabios build (newer than 76e58028d28e78431f9de3cee0b3c88d807fa39d, thus generating a new-style ssdt) via -bios then you'll end up with a mismatch and things don't work.
cheers, Gerd