On 10 April 2017 at 16:03, Ard Biesheuvel <ard.biesheu...@linaro.org> wrote: > Our current ACPI table generation code limits the placement of ACPI > tables to 32-bit addressable memory, in order to be able to emit the > root pointer (RSDP) and root table (RSDT) using table types from the > ACPI 1.0 days. > > Since ARM was not supported by ACPI before version 5.0, it makes sense > to lift this restriction. This is not crucial for mach-virt, which is > guaranteed to have some memory available below the 4 GB mark, but it > is a nice to have for QEMU machines that do not have any 32-bit > addressable memory, which is not uncommon for real world 64-bit ARM > systems. > > Since we already emit a version of the RSDP root pointer that has a > secondary 64-bit wide address field for the 64-bit root table (XSDT), > all we need to do is replace the RSDT generation with the generation > of an XSDT table, and use a different slot in the FADT table to refer > to the DSDT. > > Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org> > Reviewed-by: Andrew Jones <drjo...@redhat.com> > Acked-by: Laszlo Ersek <ler...@redhat.com>
Michael -- I'm assuming you're planning to take these 2 patches via the ACPI tree; let me know if you'd rather I take them via the ARM tree. Acked-by: Peter Maydell <peter.mayd...@linaro.org> thanks -- PMM
