XSDT support allows using ACPI 2 features while avoiding breaking legacy windows XP guests: ACPI 2 tables are linked from XSDT only, ACPI 1 tables from both RSDT and XSDT, this way XP does not see ACPI 2 tables.
As a first step, this patchset generates v2 RSDP and fills in XSDT matching RSDT exactly. ARM patch is untested: I don't know how to test ARM ACPI. Testing reports would be greatly appreciated. Michael S. Tsirkin (4): acpi: add API for 64 bit offsets i386/acpi: collect 64 bit offsets for xsdt i386/acpi: add XSDT acpi: unify rsdp generation include/hw/acpi/acpi-defs.h | 15 +++++-- include/hw/acpi/aml-build.h | 7 +++- hw/acpi/aml-build.c | 99 +++++++++++++++++++++++++++++++++++++-------- hw/arm/virt-acpi-build.c | 39 +++--------------- hw/i386/acpi-build.c | 64 +++++++++++------------------ 5 files changed, 129 insertions(+), 95 deletions(-) -- MST
